November 2009 - Posts
All in all, tech-ed was worth it this year.
If you’re an an IT professional, then visiting tech-ed is a valuable learning experience. Even though most of my job involves off-the-shelf process control software, this software is still running on the Windows platform, and uses Windows and Microsoft technologies to work.
So for the purpose of administering and troubleshooting software on the windows platform, it is important to know how the software works, what it’s capabilities and configuration options are, and how it fits into the larger ‘Microsoft’ eco system.
By attending tech-ed and choosing the appropriate tracks, it is possible to keep a broad perspective. By knowing the important basic aspects of Windows 2008 and SQL server, Active Directory and other related things, I can get a better understanding, which will always come in handy eventually. Sooner or later we’ll run Windows 2008 and Vista, or ‘7’, or SQL server 2008, or something else.
And some things are downright practical already: The capabilities of powershell are astounding, and can definitely make life much easier in cases where now batch files are used that are not always easy to understand, or unable to provide much feedback when run as a scheduled task.
From that perspective, tech-ed was definitely a success.
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After tech-ed I am excited about developing for Windows 7, and playing with the parallel computing toolset that is going to be part of Visual Studio 2010. Since my existing partitions were already quite cramped, I thought I’d install 7 on a new disk so that I can put it on a 200 GB partition.
I bought a new 640GB Western Digital disk and set out to install Windows 7. all went fine until after the first reboot, when I got a black screen and my monitor fell in power save. I tried rebooting in safe mode but that didn’t work.
For some reason, Windows 7 can sometimes do something funky to the display settings, causing the video card to turn into a problematic mode.
After some fiddling around, I found out (thanks google) that I can press F8 to start Windows 7, and choose an option to force the video resolution to 640*480 and bot succesfully. I was then able to download the proper nvidia drivers, install them, and configure the proper display settings.
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Check-out was a painless experience. I’d already packed my stuff yesterday so I was at the reception early enough to avoid the rush. The cloakroom in the Messe was organized properly so luggage drop-off was painless as well.
Time for a coffee and a quick e-mail check, and it was time for the first session of the day.
DEV307: Parallel computing for managed developers
This talk is hosted by Steve Teixeira.
It is a repeat of the talk that was held earlier this week. Despite that, the room is filling up nicely. When the session starts, the room is not completely packed, but just well attended.
From interviews with customers in large ISVs and game companies, there is still only a minority of programmers who program in parallel. Usually, the parallellimization (my spell checker claims this is not a real word J) is done by one or 2 programmers at most who do the infrastructure, and the rest of the team just makes their code so that it can hook into that. The number mentioned was that only a handful of percent of programmers program in parallel. This really surprised me, since I have been doing that for over 10 years, as I thought many people did.
One of the big reasons for this disconnect with the parallel world is that up until recently, thinking about parallelism meant that you had to think in term of actual execution flow instead of task based. Threads, locks, and the various patterns made it hard to focus on solving the actual problem at hand, because the concurrency plumbing around a parallel problem was so complex.
To ease the transition to parallel programming, Microsoft is working on a parallel programming toolkit that has all the basic plumbing in place so that programmers can start thinking about task based programming and letting the runtime take care of the gory guts underneath. This way, you, the programmer, are not forced to hammer your solution in a threading paradigm, and implement the guts to support cancellation, exception handling, and other things that can otherwise turn a seemingly simple threaded solution from simple to stupendously convoluted.
Steve is a natural born speaker, and again his presentation was a handful of powerpoint slides, interspersed with lots of demos and code explanations. This presentation was based mainly on the necessity to change the way we think about parallel execution.
CLI309: Sysinternals tutorials
This talk is hosted by Aaron Margosis.
Now that I see him, I recognize him as ‘the other guy’ whose name I forgot during the virtualization - > app compat talk.
His presentation included 3 powerpoint slides, and these were shown during the first 2 minutes. The rest of the presentation was a non-stop demo of some of the sysinternals tools and how they can be used.
I have been using these tools for over 10 years now, and they are THE tools you need during trouble shooting, debugging, or simply if you want to know what goes on under the hood. Despite the fact that I have been using them for so long, I still saw a couple of interesting features that I hadn’t seen before.
This talk went very smoothly, and Aaron is a great speaker. As with Mark Russinovich’s talk, the room was packed full. They had already changed the room assignment so that it was now in one of the biggest rooms of the convention center, but still it was packed.
There is little point in me trying to cover the contents of this presentation here. Just download the latest release of the sysinternals suite and start playing with it.
The food aspect of the lunch was as basic as it gets: packed lunch. The turkey sandwich wasn’t bad though.
The company was great though. Steve and I finally managed to meet up and we spent an hour and a half catching up. That was really great, and one of the nice things about going to tech-ed. Not only is the learning experience extremely valuable, but you also get to meet people from all over the world.
Because of this, I missed the last session of the week. As usual, this wasn’t a real drama. The afternoon session(s) on the last day of tech-ed is/are usually less interesting because they factor in that many people are already leaving because of their flight times.
I had thought to attend Mark Russinovich’s talk about ‘The case of the unexplained…’ windows troubleshooting talk, which is would cover the various troubleshooting scenarios he was involved in, and solved with the sysinternals tools. I followed the blog series in which he wrote about those things so I didn’t miss a whole lot.
Day 5 wrap-up
Today was less intense, due to the fact that everybody is leaving today, and the schedule is set to that expectation. The talks were interesting though.
I am writing this from the starbucks at Tegel airport, and I have to admit that I misjudged the size of the mugs here. I chose the middle size because I thought that it was the size I am used to. The only reason I thought that, was the relation between the different sizes that were shown.
Now that I am actually holding it, I can conclude that they don’t use ‘small’, ‘medium’ and ‘large’, but ‘large’, ‘oversized’ and ‘humongous’.
I still have some time to fill before I can check-in for my home flight, so I can get something to eat and finish my reports. I’ve already checked with my colleague and there were no dramas at work so that is good.
I have to say that Tegel airport is a much nicer place to wait than Barcelona airport. There’s a lot of stores here, a starbucks, places to sit… and so far noone is looking me out of the premises because I am not actually buying additional coffee so that is nice.
My flight doesn’t leave for another couple of hours so I can do some development or begin on my tech-ed wrap-up report. It won’t be as extensive as the day posts, but I always like making a summary of the week.
I am already looking forward to home, and being able to hug my kids. Unfortunately, my wife is in the US at the moment, and it will be another week before I see her back.
I had an interesting experience at the security challenge though. I always carry a swiss pocketknife with me. You know the ones: with a file, screwdriver, can openener, a dozen other things, and of course, a blade. A couple of times I thought ‘I must not forget to put it in my checked luggage’. And of course I arrived at the security gate with that knife in my pockets.
I quickly put it in my carry on bag and put everything in those plastic X ray boxes. I was told not to take off my rings, and I triggered the metal detector. I was wanded down by a friendly security guard. For some reason, their detectors were set so sensitive that the wand beeped because of the individual rivets in my jeans, the zipper of my jeans, my rings, and even the roll of peppermints in my pockets.
No kidding, the wand beeped at the foil wrapper of my peppermints. Still, I was allowed to go through but there was no fooling the X ray machine. The lady kindly asked if I had a knife in my bag after which I dutifully handed it over. She looked at it for a minute, tried to open it (she failed), said ‘Hm, ok no problem’ and then gave it back to me with a smile.
She must have decided that I was unlikely to attempt a hijack with a little swiss army knife. It probably helped that it was clearly recognizable as a swiss knife, and that I used it as a keychain with keys attached. I don’t think I’d have gotten the same treatment had it been my spyderco. Interestingly, she made more of a fuss about the fact that my drinking bottle was still half filled with water. So I opened it and started drinking, and after a couple of gulps she told me it was ok.
It was nice to see that the German security guards were both paying attention AND showing common sense.
Today I will go shopping for presents for my wife and kids. The last session ends at 18:15 and the store I want to go to is open till 21:00. There is a train station right next to the ‘spielmax’, and I feel confident that I will be able to get there in 1 go.
CLI312: Group Policy changes for Windows 7 and 2008R2
This session is hosted by Michael Kleef.
There are 2 reasons for me to attend this session. First of all, this is the only remotely interesting session at this hour of the day, and Group policy is something interesting which I actually use.
Secondly, this session is in the same room as CLI401, which it THE talk by Mark Russinovich. This means I don’t have to travel half a mile to get there in time.
The most important thing I took away from this talk was that in ‘7’, group policy is no longer just a logon action, but a hardened service to apply policy in the background. That sure is nice and would have solved a lot of my problems, if we actually ran something other than XP on my network. Still it is good to know for future reference.
This new service is network aware, so it will try to haul in group policy when it detects a domain controller, and not blindly wait until it is triggered by its default schedule. This is a boon for mobile users, or rather, the admins in charge of the machines of mobile users.
Then there was a word on group policy replication and how FRS (the file replication) sucks really bad. DFRs is supposed to be much , much better and solve a lot of issues. In particular, if FRS breaks (and it does), it doesn’t tell you. DFRs logs things in the windows event log for you.
Preferences were also mentioned, and how they can be used to help you configure computers with much more options, like printers, drive mappings, and other things. These are not real policies though.
Some part of the talk also covered the difference between adm files and admx files (the new file format for policies) and how they make your life easier.
I was impressed by the group policy abilities, though sadly I won’t be able to use them for a while, since we are still running 2003/XP.
CLI401: Windows 7 and 2008R2 kernel changes
This talk is hosted by Mark Russinovich.
This is amazing. I left the previous talk 5 minutes early to go to the bathroom and then returned immediately to make sure I got a good seat. For me, this is the most anticipated talk at tech-ed. The amazing thing is that the previous talk has ended slightly early, and yet the room is filling up already! There is another half hour to go, and most of the front half of the room is already occupied. And this is the largest room of the event!
2 years ago I was talking with a new programmer. You know the type: wearing a suit, having a slick haircut, carrying books about ‘patterns’… We ended up talking about programming, and I mentioned I was a C++ MVP and that I was currently reading Windows System Internals 4th edition because I really wanted to know how things work under the hood. He said he didn’t care about that level of understanding. He cared about managed languages, patterns, and ‘agile’ programming. No offense to the agile people, but it just fit with the rest of the picture.
At that point we had a bit of a disconnect. I am of the opinion that if you want to be a –real– programmer, then it is your duty to understand what you are doing, and not just doing things to get results.
At this point we are still 5 minutes away from the start of the talk, and the back of the room is getting packed as well. There are still some seats available, but pretty soon they’ll have to start turning people away.
As the talk is beginning, there is one moron in front of me using his cell phone. Personally, I would not presume to think that what I am saying is more interesting than what Mark is saying. And this is where Marks status among the audience shone through, because the guy with the phone was prodded from several sides and told bluntly to shut his yap. He stubbornly kept talking on, and I was glad he quit half a minute later, because there is a good chance that bad things would have happened.
Mark’s talk was very good. He has an easy way of talking to an audience, and he connected immediately. The talk started with an explanation of the various ways in which the memory footprint of Windows 7 and 2008R2 (they’re based off the same kernel version) has been decreased, so that it’s the first OS release ever to use significantly less resources than its predecessor. And not only has the memory footprint been reduced, but there have been other changes that prevent runaway processes to stomp over the working set of other components or applications.
In the realm of power efficiency, Mark talked mostly about core parking, triggered services and timer coalescence. One of the major investments in ‘7’ development was to make sure that the kernel was doing ‘nothing’ as much as possible. J Incidentally, the kernel version for ‘7’ is 6.1, for no better reason than app compatibility and the morons who implement OS version checking the wrong way.
After that he briefly touched on the new virtual service accounts and managed service accounts, which are almost identical to normal service accounts, except that they managed their passwords like computer accounts.
The final part of the talk was about scalability, the number of CPUs Windows can use properly, and what was done to decrease the amount of lock contention in the kernel. It was pretty impressive. The biggest single improvement in scalability was the removal of the Dispatcher lock, which was apparently a very surgical process to do, and quite an achievement.
The talk zoomed past and was very interesting.
Afterwards I managed to ask Mark about his recent Newsid blog post, because I manage a complex software infrastructure in which the machine SID is used by the application, and I wanted to ask him about it. Mark asked if that software also runs on our DCs, and when I said yes, he then told me that it is not using the machine SID to communicate.
After first I was a bit skeptical, but then I remembered that in the past, we had 2 machines in our system which were both active in the software system AND fulfilling a domain controller role. So Mark was probably right. The reason I thougth it did use the SIDs, was that they are displayed, and sometimes referred to in documents or procedures.
Mark’s talk was top notch.
Mashed potatos with onion, Brussels sprouts, and pommes gratin with carrot and corn. It was good.
You may notice the absence of meat here. Quite unusual for me, and I haven’t turned vegetarian overnight. The meat was a good looking beef stew, but the description included mushrooms. I can eat regular plain mushrooms just fine. I like them. But if they used forest mushrooms (the weird looking ones) even in small amount, then that would be the end of tech-ed for me.
On the same note, I skipped desert, since all the cakes and muffins had red blotches, and I religiously stay away from red fruit, on the assumption that it may contain strawberry. The chances may be small, but strawberry could indeed cause a religious experience for me, or at least allow me to find out whether there is an afterlife or not.
For the same reason I skipped the sandwiches during the event party on Tuesday. I nearly picked up a cheese sandwich when I noticed they had slices of strawberry in between. I’ll never understand why on earth someone would put strawberry in a cheese sandwich, but it sure kept me on my toes.
DEV313: Architecture discovery and Validation with VS2010
This talk is hosted by Peter Provost.
The talk centered around the new architect tools in VS, and how they can be used by developers and architects to get an overview of large and complex applications, by creating hierarchies of namespaces and assemblies, and perform analysis on those various diagrams.
Related to this was the layering of code and classes, and how it could be used.
He also showed the UML modeling that can be done of existing code, to get a better understanding of what actual code is doing, and whether it is looking good (understandable) or not. The flip side of this was the ability to generate code from UML diagrams. What was also very interesting was being able to define validation diagrams which are checked against the code during compilation. This allows architects to detect violations of the various layer interfaces that were defined. The violations messages would take you to the violations themselves, so that you could easily see what the issue was, and you could fix it there and then.
This is something that is generally only useful for large projects, like for example the last project I did for a satellite test bench. With over 20 projects, a handful of developers and 50000 lines of code, it would have been very useful. Especially since we had to document everything with UML in detailed design documents. This would have saved me many months of work, both in documentation and design.
The first question of course was: does this support unmanaged C++. And the answer was no, it did not… yet.
This is apparently the number 1 asked question. Even people within Microsoft would really like to use this for the unmanaged codebases of the various projects which are unmanaged, and can be classified as ‘complex’, like Windows, Office, …
It will not happen in the VS2010 timeframe, but they are actively working on that feature. Judging by the effort required to make Intellisense run decently (not super, just ok) doing this for unmanaged C++ is a task of herculean proportions.
DEV410: Building high performance parallel software
This session is hosted by Steve Teixeira, who is generally a good guy despite having left the C++ team. The contender for this session slot was SIA313 about how attackers target the Windows stack, and how to protect against that. That seemed interesting too, but this is probably more practically useful to me.
Btw, as much as I would like, I am not going to hang around after his talk, because I will have to RUN (not walk) to hall 7-2C if I want to be in time to have a good seat for Mark Russinovich’s next talk CLI402 about the limits of Windows 7: another talk any self respecting geek just has to see if he or she is here this week.
I told Steve I’d drop by tomorrow morning at his other talk so that we could chat for a bit longer. He was glad he didn’t have to compete with Mark in the same session slot though J
Steve’s talk was basically a rollercoaster ride of demos with only a handful of slides, where he showed off the capabilities of the new concurrency analyzer tool (I forgot the actual name) for analyzing concurrency scenarios. I have to say it was pretty impressive.
After that part of the talk he also showed lock contention scenarios and how you recognize them. Btw, locks do not contend with Chuck Norris. For the rest of us it can be a real pain to deal with. The new analyzer even has runtime deadlock detection, which was sweet to see.
I didn’t write down much of the details, since these were demos and I was paying attention to those. This was a very nice talk and the new concurrency / parallelism features in VS2010 are definitely worth checking out.
CLI402: Pushing the limits of Windows
As I already mentioned, this is another talk by Mark Russinovich. The limits of windows are like the price of clothes in the ‘better’ boutiques: If you have to ask, you can’t afford it. But despite that fact it is really interesting to know the limits and know where they come from.
Steve’s talk ran slightly over time, so I hurried to get here. I didn’t quite run though. It was more like the speedwalk where you don’t trot and don’t quite shove people out of the way to get through. There is still 25 minutes to go and I have one of the last ‘really good’ seats where one has an un-obstructed view of the screen at about the right distance. There is a ton of people milling around and the front half of the room is packed; the back half is filling up as well. Really. They should have used the keynote hall for Mark’s talk.
10 minutes to go and the room is almost packed.
5 minutes and there is an announcement asking people to put up their hand if they are next to an empty seat. People are still queueing up, but too bad for them.
Mark held a captivating talk about the different types of memory (virtual, physical, …) the paged and non paged pool, processes, threads, object and handles. It was really an interesting talk. But the very best thing was when the talk ended, and I was able to walk out, been able to say to myself: I already knew –ALL– of that. That was a proud geek moment. J
I am not going to go into detail here because that would take too much time, and it would be incomplete as well. If you care about that, buy Windows System Internals, 5th edition.
The 6th edition is coming out somewhere in spring next year, and will cover ‘7’ and 2008R2. Still, 5th edition is definitely not a waste of time to read, because Vista/2008 is what we will be running next year if all goes well, and it is always good to know the gory details, even if I’ll never use it as anything else but a reference for understanding what the system is doing or for troubleshooting.
Wrap-up day 4
Whew, day 4 is at an end. I have to admit that I feel the strain of having to pay attention all week. Despite that, it is sooo worth it.
I learned a lot of great stuff today, and this is really the only place in Europe where you can get it. It was the first time I saw Mark Russinovich speak, and it was definitely something worth repeating.
After his talk I went went shopping for some toys for my kids. I can proudly announce that I took the correct train, and found it at the first try (after asking for help). Next I’ll be finishing this report, catch up with my mail, and then pack my stuff so that I can check out early tomorrow. I’m already looking forward to tomorrow evening when I can finally sleep in my own bed again.
Yesterday evening I started reading in Windows System Internals 5th edition, and then read some fiction and went to bed early.
People sometimes say ‘Oh wow you can go to tech-ed, be sure to go to this place or that and do some sightseeing...’. Tech-ed ends at 19:00, by which time I am tired from having to pay attention all day. Then I have to eat something, go back to the hotel, finish my report, and shower. By then it is past 21:00, and all I want to do is just a bit of reading and then sleep long enough so that I can pay attention all day again, next day. Seriously: if you don't stay for the weekend, the amount of time you can spend being a tourist is limited if you want to make the event itself worthwhile.
Anyway, I had breakfast as usual. I am not going to repeat my breakfast report every day unless something changes ok? By now we all know that if the hotel has bacon, I eat it. It is as simple as that. Never change a winning team. Bacon, coffee, orange juice, and the day begins.
CLI306: How to deploy Windows 7 on a stick.
I had to choose between this and DEV208: Triple boost your application with ‘7’, .NET4.0 and Intel multicore. The reason I didn’t go to that one was that it specifically mentions ‘Intel’ multicore, which leads me to believe that the talk is done by an Intel rep, and thus only a glorified marketing blurb for intel CPUs. After all, for all practical intents and purposes, the CPU type means nothing for the software development. Make no mistake it can have a huge impact on performance, but that is no different between intel and amd.
In hindsight, choosing the deployment session was perhaps the bad decision. This session was mostly about using the deployment workbench. It was basically an hour long demo with narration. The deployment workbench looks like a great tool, and I’ll definitely play around with it at home to see how it works. It has some nice features, like being able to import drivers in your setup, as well as applications.
It has always been possible to import drivers in a windows setup, but it involved a lot of manual work, text file editing, the ritual slaughter of a goat, and about 30 tries before you got the last setting right. Been there, done that, have the goat carcass to prove it.
All in all this was not an uninteresting talk, but the title was misleading. When someone says: Deploying ‘7’ on a stick, I would expect it means that you deply ‘7’ ON the stick and then boot from it. Instead, they deployed ‘7’ FROM the stick. They made a bootable stick that then installed ‘7’ onto the machine that the stick was booted in. Too bad, because that is not nearly as interesting to me.
INT308: Deep Dive in Windows Workflow Foundation
This session is hosted by Nuno Godinho.
I watched it for 5 minutes, and then decided that it was not for me and left, and went to CLI322.
CLI322: Windows 7 Applocker
I’d rather have gone to the 2008R2 failover clustering session, but that was full so I decided to check out the applocker session. It is interesting enough to learn more about, and since my daughter is nearly at the age when she can start using a computer, it may come in handy. J
Basically, Applocker is a technology that allows you (the admin) to create blacklists or whitelists of applications that can be run on a computer. These policies can be configured to have permissions based on user name or user group, meaning that these policies are no longer specific to a machine, but to users as well, and this can be very powerful.
With the policies you can control the execution of exes, scripts, and dlls. Currently there is no good way to work with managed applications yet if they are not exe based (for example web apps running in the Java runtime.)
The rulesets can be created using wizards, manually, or via powershell. It looked pretty impressive. It is also possible to build a reference machine, and then scan that machine for everything that’s installed and generate rules base off of that to give you a configuration head start.
And as with other policies that were mentioned yesterday (for example in the Kerberos talk) it is possible to deploy these policies in an audit mode, enabling you to monitor the impact of these policies on your environment before you actually enable them, thus allowing for a smoother implementation.
Lunch was a winner today as well. I had poached salmon, broccoli, carrots, and pasta. I didn’t go to any of the lunchtime sessions because nothing interesting was running, and you can really only attend them if you run to the lunch hall, shove people out of the way in the buffet line, and then ram the food down your throat while running back to the other side of the conference center where the sessions are held.
Instead I took the time to eat, and then ambled to the community lounge to sit in a sofa, read my email and write the previous part of my report.
OFS218: What’s new in Office2010 for Developers?
This session is hosted by John R. Durant
My alternative would have been ARC306: The architecture of predictive programming, but I have not idea what that would be about, so for all I know it would have been totally useless to me.
Otoh, the title of this topic mentions developers (which I am) and office 2010 (which I don’t know much about) so there is a good chance I’ll learn something useful here.
First of All I should mention John’s presentation style. The man is a born speaker. Have you ever watched one of Chris Rock’s HBO standup comedy specials? You can find them on youtube if you haven’t. John is a bit like that. Despite the fact that I am not really the intended audience for this talk, he manages to make it interesting enough that this hour and 15 minutes zooms past.
As to the topic at hand, it is really a bit out of my league. He basically demoes a lot of the new data interfacing options in office 2010, which implement online – offline presentation capabilities, as well as an underlying sync framework to cope with data changes.
This is all very exciting stuff for people who are involved with enterprise document management / generation. Especially when sharepoint is involved. I really see the benefits for those people, as it enables them to do a lot of nifty things for document generation and presentation that is invisible or at least unobtrusive to end users.
In my job, this is not something I am involved in at all. Still, it was very interesting to see what can be done with tomorrow’s office technology. Once there was a time when I could still keep in touch with the different office interop technologies just by making some simple samples. Nowadays, the world of office automation is a vast landscape of technologies and options that is very hard to navigate for those who are not involved with it on a daily basis.
DEV309: The Windows API Codepack
This session is hosted by Kate Gregory, and I had to attend it for several reasons. I’m a system software developer (cunningly disguised as a system administrator), so the Windows API is something I am interested in. It is about managed code development, which is something I do more and more. And Kate is a superb speaker so I had faith that one of the only ‘real’ developer talks this tech-ed would also be a good one.
There was a long break before this talk, but I decided to turn up early enough to get a good seat. It has been my impression so far that developers really get the short end of the stick this tech-ed, and any real development session is jumped by the developers in the audience like a limping gazelle by a pride of lions. And whaddaya know: it is 20 minutes before the start of the session and the room is already filling up nicely. Go Kate!
It is now a minute or 2 before the start of the session, and the room is getting packed. And it is a big room. Take that, tech-ed event organizers! Tech – ed should be about development, NOT boring IT pro stuff.
Anyway, Kate held an interesting talk about developing for Windows 7 features, using managed code.
Instead of showing lots of code, Kate showed a selection of Windows 7 features that make the difference between ‘XP/2003’ era programming and ‘7’/2008R2 era programming (For the sake of not embarrassing ourselves, well just pretend Vista never happened. J) and then showed how easy it is to use those features in your application, through the use of the Windows API Codepack.
The first topic she handled was the taskbar, and how your app can do all sorts of interesting stuff with the application icon. Then she discussed the application thumbnails and restart / recovery behavior. And finally she covered some aspects of making your application powerstate-aware.
All in all it was a very interesting talk, filled with stuff you can use right now, with very little time, and a very big payoff.
I wish I could say more about it, but this session had lot's of cool demos, and it is rather difficult to explain why it was cool, and what she made those features do. Go to the codepack website and play with the codepack samples. You'll be pleasantly surprised.
CLI310: Is Virtualization a silver bullet for compatibility?
This talk is hosted by Jeremy Chapman, and some other guy I didn’t catch the name of.
This is where I have to admit that I attended this pretty interesting talk purely by accident, since in all my naivety I had just looked at the title and thought: Virtual Machines. As it turned out, it was about application compatibility, and What Windows does in order to make sure that older applications work with ‘7’.
Interestingly, one of the speakers mentioned that ‘Virtual’ is now the new ‘.NET’ (anyone remember Microsoft .NET Server?) or ‘Live’ brand that is slapped onto every new technology, because it is a marketing buzzword.
The talk started off very well, with the explanation that in ‘ye olden days’, backwards compatibility was king. This started changing after Bill Gates’s famous TWC memo, but Vista was really the first new OS where backwards compatibility was clubbed in the back of the head, and then beaten up in a back alley by ‘security’ and ‘stability’.
As a result, there was a lot of wailing, and the gnashing of teeth, because now there was a ton of applications who were no longer allowed to do the naughty things they were used to doing. UAC and running as a standard user were the biggest application compatibility hit ever in the history of Windows. Btw remember folks: every time you turn off UAC, Steve Ballmer kills a kitten.
The speakers then gave specific examples of the different ways in which apps would be causing problems.
After that, they proceeded to discuss the various ways in which Windows tries to fix it. The first thing they mentioned were the app compat shims, that can be used to trick an application into thinking everything was ok. One such example is configuring the shim to give a specific Windows version when the application asks for it, because the version check is implemented wrongly by the application. There are a number of shims shipped by default, but you can also create custom ones by yourself if you need to.
And there are things like folders that are now in a different location or have a different name. These are now created as junctions to those new folders.
App-V was briefly discussed as a way to separate applications from each other, but I missed the earlier talk about them so I cannot say much about that.
The most interesting thing I learned was some background on how the new XP mode works. It is basically a fully activated Windows XP virtual machine running in the background, which shows the UI of the applications its running in the ‘7’ desktop. They even mentioned that it has the ability to install USB drivers. I have to try this at home, because it would finally allow me to use that Canon digital camera with the wonky software without having to install and configure a separate VM for it. Of course it’ll still run in a VM, but in a way that it doesn’t bother me so much.
Of course it is still a local XP vm, and you have to make sure it is patched, maintained, etc. For home use that is not an issue, but for enterprise use it is a pain. For that, the have something called Med-V, which is basically the enterprise version of XP mode, which allows admins to centrally manage and maintain those virtual machines.
I ended up in this talk by accident, but it was very useful, and gave me a better understanding about the ways in which Windows deals with compatibility.
Day 3 wrap-up
Another day filled with learning. The food was great, the company was great, and so was the schnitzel I ate for diner this evening. It was so unbelievably good, and again very cheap. Only 12 euros for the diner + 1 pint of warsteiner.
Tomorrow, tech-ed finishes at 18:15, so today I took some time to get directions to the nearest toy store, so that I could buy something for my daughters.
To answer the question that you all have been asking yourself, I can answer with a resounding YES. The hotel serves bacon at breakfast. And as a matter of fact, it is possibly the best bacon I’ve had in years. The correct thickness, and fried just to the point between bending and breaking. It was kept in a bowl, resting on whitebread to absorb the excessive fat so it didn’t slide off my plate either.
They had a variety of bread, cereal, fruit and vegetables, different types of egg, salmon and a couple of terrines, yoghurt, fruit juices, etc. They even had over a dozen types of tea leaves. The only thing that disappointed was the coffee. Overall, the breakfast was superb.
I also have to say that this is by far the cleanest hotel room I can remember in a long time. The tiling in the bathroom is immaculate, as is the grouting. I could not find a single spot that was less than absolutely clean, so a big kudos to the KuDamm101 hotel.
My trip to the conference center was flawless this time, and I arrived in time to get a cup of coffee and read my email. The coffee is good btw. It is not the black bliss that was poured in Barcelona, but definitely above average.
I forgot to mention yesterday, but during the keynote speech it was proven yet again that computer geeks as a crowd are depressingly easy to please: all you have to do to make the crowd go wild is to throw a box of free t-shirts in the audience. Even bricks of 100 dollar bills would probably not have the same effect.
CLI302: How Windows storage is changing everything
This session is hosted by Mark Minosi. I saw him speak yesterday and so I knew he was a great speaker. I chose this talk because it ties in with VHD, which was mentioned yesterday in his ‘7’ talk and it seems interesting. The contenders for this session slot were VS tips and tricks, and parallel programming for managed developers.
Luckily, Steve’s talk on parallel programming is repeated on Friday. And the VS tips and trick is probably interesting, but not something I can’t easily figure out myself by looking at the slides afterwards.
The talk on VHS was interesting. VHD is technology for Virtual Hard Disks. And since the technology is cool, it is also used by the Windows Backup utilities to backup your files to virtual disk files.
VHDs are like the virtual disks we have all been using for a long time, via VirtualPC, VMWare or whichever virtual technology you happen to use. The difference is that you can mount them in Windows, assign them a drive letter, and use them natively like any other disk.
What you can also do is install Windows in one of these virtual disks, and then configure the boot manager to boot from that virtual disk. This is a cool thing to do.
Now of course, you might wonder what the difference is between this and just using VirtualPC. The answer is: not a lot. For plain yoghurt desktop use, I don’t think this is worth the bother. And annoyingly, you cannot run XP or Vista this way. Only ‘7’ and 2008R2.
The biggest difference would be that the booted OS runs bare metal. It is the sole OS, and gets access to all the hardware and resources, whereas a VM typically only has 1 or 2 CPUs, has to share memory with the host OS, and performs disk IO at a much slower rate. Additionally, direct access to other disks in the machine is not possible with VM clients.
So that might be an interesting option if you need to run different OSes in a multi boot environment without wanting to dedicate individual partitions to each one.
SRV203: Windows Server 2008R2 Overview
This session is hosted by Joey Snow. It is a high level overview of the new features of 2008R2 that make it worthwhile.
The first thing that was mentioned was that the virtualization and hyper-V technology for R2 got improved significantly. Items mentioned were live migration to other hardware (this was impressive to the developer in me), and the usage of new CPU technology to improve performance.
Remote Desktop got overhauled to support cool new things like remote application support and improved performance for media, making it possible to view e.g. an MPEG file on a remote server.
What was also nice was the system management software that includes a best practices analyzer that can scan your network, and then tell you if your DC, DNS, etc infrastructure follows the industry best practices (which are kept as XML config files so they are configurable), what the impact is if you don’t, and how you can resolve that.
The backup tool in R2 is finally becoming usable too. Microsoft finally got to see that we want to back up individual files and folders, and that we want to back them up to a logical volume instead of a dedicated physical disk.
Then there was also Direct Access, which allows for direct VPN connection to the corporate network, using IPv6 and IPSec. At the same time, you can still browse the internet without going through the corporate network.
App locker is a way to control which apps your users can run, via group policy and digital certificates, using blacklists or whitelists. And BranchCache enables people in branch offices to download files from the corporate network and caching them locally in a way that is invisible to the end users, thus relieving the server and network infrastructure.
And one of the things that I personally liked very much is the ability of Powershell to be executed remotely, just by adding 1 line to the top of the script. This allows me to write scripts that can be executed remotely on a server for doing administrative tasks without having to log on to the machine itself. By the way, Joey showed an Integrated Script Editor. It is not quite Visual Studio yet, but it looks very usable, with many nifty features and even features like breakpoints and stepping.
DEV203-demo: MFC stuff.
This was a lunch time session. I quickly ate my lunch and then got to the session. The food was great btw. The pork was perfectly cooked, and soft as butter. The baked potatoes and carrots were very good as well.
I did not attend this MFC session because it was about MFC. I hate MFC. MFC is the spawn of the devil. When God inspired Bjarne Stroustroup to start C++, he had templates in mind. Unfortunately, the devil got wind of this initiative, and caused delays in the formation of the C++ standard. So instead of using templates as God intended it to be, the MFC team decided not to use them and started on the object hierarchy road, paved wit good intentions, that lead to the current mess. ATL and WTL still followed God’s big plan, but it was too little, too late. MFC had a big head start, and is now here to stay, like original sin.
But I digress.
I attended this session because I assumed that because of the dearth of developer sessions, it would be a watering hole for C++ developers. And I was right. Kate Gregory was also there, and I talked to her for an hour or so. Kate has a talk tomorrow which I will attend. It was good talking to her. She is a C++ expert, as well as a nice person.
I did not hear anything from the MFC demo, so my C++ soul is still safe.
SVR315: IPv6 for the reluctant
Another talk by Mark Minosi. I wanted to attend this one because I don’t know too much about IPv6 yet, and since it is part of ‘7’ and 2008, and probably the way of the future, I felt this is an excellent opportunity to learn more about it.
Unfortunately, the session room was full and I was not able to attend this session so I chose the SVR205: introduction to Hyper-V and Windows2008R2
SVR205: introduction to Hyper-V and Windows2008R2
This session was hosted by Edwin Yuen and Jeff Woolsey.
The session was OK. It showed many features of Hyper-V, and I have to say I was impressed. For my environment, the difference between this and VMWare Server is negligible. Currently we run VMWare Server 2.0, but if I ever have the opportunity to switch, I’ll switch to Hyper-V R2. The management utilities are impressive, as is the live migration. What is even more impressive is that you can migrate to servers with a different CPU architecture without downtime.
Hyper-V accomplishes this by normalizing the set of instructions that the VM has access to. This made it possible to migrate a running VM from a P4 to a CoreDuo to a Core2Duo to a Core I7 nehalem without going down. And of course, everything is done via a powershell interface, making it possible to script everything you could want to do with your virtual infrastructure.
There was a lot of infrastructure management provided out of the box, and most of it is 100% FREE. I am not an expert in virtualization by any measure, but I think that this is seriously going to eat into VMWare’s revenue.
SVR302: Windows Crash Dump Analysis
This session is hosted by Daniel Pearson. My alternative choice would have been DAT206: SQL Server 2008 Power Hour. I didn’t really know which one to choose, but since this is in one of the smaller rooms and I was there, I just went ahead and chose this one. It is also more advanced than a SQL Server demo, and possibly I’ll learn some neat tricks here. The room is filling up quickly, and this session room will probably be full to capacity before the talk starts.
Basically, Daniel uses the ‘Not My Fault’ application to load the ‘myfault’ driver in order to cause a specific driver error, such as a buffer overrun, pagefault at dispatch level, or other bug. Then he demonstrates how to figure out the cause of the problem, using windbg.
He also used driver verifier to demonstrate how you can inspect suspect device drivers by performing more stringent checking and analysis at runtime. This has to be enabled explicitly, because it can cause a significant runtime overhead.
All in all it was an interesting session, but not as advanced as I would have expected really.
SIA401: Cracking Open Kerberos
And yet another talk by Mark Minosi.
I’ve always wanted to know more about Kerberos, and this is an excellent time to learn. It is a 400 level session so quite advanced, but I hope I know enough to be able to understand what he is talking about. Mark is a great speaker so that helps too.
Mark explained the process involved in authenticating a user on the domain, by following the Kerberos tickets. The explanation was really good and made sense. After a discussion on what Kerberos does and how it does it, he then explained the difference with NTLM (the old Windows authentication protocol), and why you should take steps to disable it where and when possible. He mentioned that around 5 to 10% of all authentication is still done via NTLM, even in a modern Windows domain.
There are several reasons for this, and they have a severe impact on functionality and security, causing weird problems (like admins not being able to join a computer to a domain) and possible attack vectors due to the weak NTLM encryption.
Mark then proceeded to explain about the new group policies in R2, enabling administrators to audit and block NTLM requests completely.
After that he explained about token bloat, service identity and authentication, and some of the edge problems that may cause Kerberos to stop functioning.
All in all this was a very good talk, and Mark’s gift for connecting with the audience made this session appear much simpler than it actually was. I had a math teach like that once in high school. The difficulty of a topic lies not just with the topic, but also with the ability of the teacher to explain. And Mark certainly has a gift for speaking.
Day 2 wrap-up
I saw a lot of great tech stuff today. On one hand I feel that it is a shame that there are not more developer sessions. I used to be able to choose between 10 developer sessions every hour, and now there are only a handful. The split is probably 60% IT 40 % dev. As Kate said to me: you don’t know you live in a golden age until it is over. The 1 week event type was chosen for economic reasons, so it will probably be so for the next couple of years.
On the other hand I now get to see some interesting sessions that I would normally not have attended, or which would not have been scheduled for the developer week. Since I wear both the developer and sysadmin hat, this 1 week setup has its advantages too.
There was a ‘party’ tonight in the exhibition hall, so I ate some of the food and drank a beer, bought a copy of Windows System Internals, 5th edition and went back to the hotel. I have the 4th edition of this book, and it was written at the time of XP and 2003. The 5th edition covers the Vista kernel and the 2008 kernel. ‘7’ and 2008R2 are not covered (they are too new) but they are based off the same kernel as Vista / 2008, so that doesn’t really matter that much despite the fact that some of the cool new features are not yet covered.
Still, any self respecting geek involved with Windows should read these books, even though they have as much pages as a Robert Jordan novel. Whether it is system administration or software development: if you really want to –know- what you are doing, then you have to have a good understanding of the fundamentals. This book is by far the best such resource that is not covered under NDA.
After a boring cab drive to the airport, I had an even more boring flight to Berlin. And that is exactly how I want all my flights to be. I don’t want it to be the thrilling and exciting near-death experience I had once, flying to Nice.
I arrived in Berlin safe and sound, and took a cab to the hotel. Sadly, the hotel is not near the conference center, on account of there not being any hotels nearby. The hotel is 2 short train rides away. It’s really easy to find. And of course, to those that know me it will come as no surprise that it took several tries for me to arrive at he correct location.
What sucks most is that a) my flight got rescheduled sometime ago (leaving 1 hour later than expected), delayed for half an hour, and the event agenda got re-shuffled since I booked. As a result, I missed 2 sessions. Because for some silly reason, someone decided that the keynote should be at the end of the day instead of the beginning.
Had I known this in advance, I’d have left for Berlin yesterday. I didn’t because I wanted an extra day with my wife and kids. Ironic, since they weren’t at home yesterday due to unforeseen circumstances. Next time I’ll just leave on Sunday, taking some extra time to travel.
Whatever. I am typing this while the keynote speech is starting. It’ll probably be an hour and a half filled with mind numbing explanations of why Microsoft technology is the greatest on earth.
I have to say I preferred Barcelona as the venue for tech-ed, for a number of reasons:
1) Walking down the street in November. Berlin: 5 degrees Celsius and rain. Barcelona: 20 degrees Celsius and cloudless skies.
2) Crossing the street from the hotel and being at the event in less than 2 minutes.
3) The venue itself. The messe is a complex of industrial looking buildings, with concrete, asphalt, etc, rather than the aesthetically pleasant looking ICC in Barcelona.
4) additionally, the idea of having 1 big event for developers and IT professionals is less than stellar. Because now, there are only half as much developer sessions as there used to be in Barcelona. Only 1 real C++ session, no large selection of .NET and C# and SQL Server sessions...
Still, I’ve had my first coffee of the day and I am starting to get a feel for the place. Tech-ed is still a good place to be. And if my knowledge of German cuisine is still accurate, the food will be good, plenty, and NOT drowned in olive oil.
CLI324: Windows ‘Lucky’ 7
This session was hosted by Mark Minasi
It was a good session, and basically enumerated the features of 7 that are either new, or changed from Vista or XP.
Mark is a great speaker, and managed to make the time fly while discussing the topics. It was not in depth so I am not going to repeat too much of it here. The things that got me interested most are the ability to image disks into files, like VMWare virtual disks. These disks can be shared, backed up and mounted. Very exiting stuff that would make my life easier, if we ever get to the point where we will actually use 7.
Other cool features are the ability to deploy to USB media, which would presumably allow me to boot from USB disk, as well as the ability to easily perform preconfigured installs.
When talking about Vista and how 7 compares to it, Mark mentioned that one Microsoft developer said ‘We are going to throw Vista under the bus’, comparing it with Windows Miserable Edition. Interestingly, In terms of raw speed, 7 is really not that much better. But when it comes to perceived speed, 7 is the clear winner due to being more responsive, and getting less in the way of what the user wants to do.
The talk was great, and the speaker connected well with the audience.
Sadly, this was the only technical session I will see today. As luck would have it, there is only 1 C++ talk this tech-ed, and I missed it. At least they could have scheduled some boring IT talks in the first 2 sessions but alas.
The actual keynote
The keynote itself so far has the hallmarks or every other keynote I’ve seen so far. A couple of tech delegates got singled out for public humiliation while a couple of IT bigwigs (presumably million dollar customers) sat on stage explaining how good their infrastructure is and how Microsoft helped them to enable it.
Bla bla bla snore.
I don’t want to sound jaded here, or un-appreciative of the fact that my company is letting me attend this event (I am really grateful), but keynote speeches tend to be hype and blubber, void of tech content and generally a waste of time. What was even worse about this keynote is that they didn’t show off anything related to Visual Studio 10. Instead, they demoed Server 2008 Hypervisor and Exchange 2010.
That said, it is interesting to a developer like me that with the newest release of 2008R2 and the System Management Center software, detailed knowledge and understanding of the low level OS guts are no longer absolutely necessary. Between the 2 of them, those applications let admins manage their infrastructure with only a modicum of nitty gritty knowledge. The software goes out of its way to be user friendly.
That is not a bad thing. It just feels weird that you can administer a complex system without having to troll through log files, understand dcom security configuration, and other arcane things.
At least tomorrow I’ll be able to dive deep in technical content, and hopefully start my day with bacon and coffee. At least 2 plates of the former and 2 big cups of the latter.
Wrap-up day 1
The travel was good, the weather not so much.
The windows 7 presentation was good, the keynote not so much.
I had a very good pizza in an Italian restaurant, for only 7 euros. Dirt cheap.
I am now making a schedule of which sessions I want to see, and when to see them. Some of the sessions I’d like to see are scheduled in the same slot, but some of them get repeated throughout the week so I can probably schedule my attendance so that I can see most of the people I want to see.