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SQL Server performance series: PAGELATCH_ and PAGEIOLATCH_ wait types: relates to concurrency, take steps in diagnosing and resolving latch contention issues.

Contention is the word that you need to concentrate in resolving the performance issue, page latches contention is common in multi-CPU systems due to the nature of w hen multiple threads concurrently attempt to acquire incompatible latches to the same...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Tue, Oct 18 2011
Filed under: Filed under: sql server, perfmon, performance, memory, tuning, dba, cpu, performance monitoring, buffers, wait stats, dmvs, pageiolatch
SQL Server wait types - keep a close watch on IO_COMPLETION and WRITELOG :: sqlperf

In the recent times I have had few opportunities to work on a slow performance related issues, having the usual monitoring methods in place the server instance was suffering slow performance (at times). Though it is essential to keep an eye on database...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Thu, Oct 7 2010
Filed under: Filed under: sql server, performance, tuning, dmv, transaction log, dba, disk, writelog, wait type, writes, wait stats
Video: Mejora de Desempeño (Performance Tuning) con Visual Studio 2008 Team Systems

Este video muestra como mejorar el desempeño (Perfoemance Tuning) de las aplicaciones .NET detectando cuellos de botella con Visual Studio Team System 2008 Duración: 7:51 Extraído del Lanzamiento de Visual Studio 2008

Posted to Carlos Walzer by cwalzer on Mon, Jul 28 2008
Filed under: Filed under: .NET, Performance, VS Team Systems, Rendimiento, Video, Tuning
If MAX WORKER THREADS increased from 255 to 500 what will be the usage or availability of system resources on the server?

Continuing on the MAX WORKER THREADS topic from ThisBlog I have been asked about method of calculating the amount of system resources that will be used when the setting is increased to 500 from 255 (default). Well, as one of the best practices you must...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Thu, Nov 15 2007
Filed under: Filed under: sql server, performance, microsoft, server, tuning, dbcc, system, best practice, testing, resources, sqlperf, max worker threads
What should I choose Load Balancing or Data Partitioning?

One of our client had such requirement to cater a load balancing for their application and needed to upgrade to higher versions of SQL Server & Operating systems. The current setup at their end is a SQL Server 2000 Active/Passive Cluster and the transactions...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Wed, Sep 12 2007
Filed under: Filed under: sql server, performance, high availability, tuning, replication, active/passive, latency
Another Best Practices article: Identifying and Resolving MDX Query Performance Bottlenecks

Best Practices are good enough to follow, but simply do not read and digest. Try to implement them within your environment to keep up the performance. Similary there are many things involved within the SQL Server 2005 Analysis Services such as MDX queries...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Wed, Sep 5 2007
Filed under: Filed under: sql server, performance, mdx, tuning, ssas, query, best practices, tsql
TSQL to obtain a list of current execution of Parallel Plans (MAXDOP)

PARALLELISM is a close friend of DBA where you get to see it as a common occurence in the multi-processor server environment and during such performance issues you can also investigate whether a parallel plan is in use. For instance If a particular query...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Tue, Sep 4 2007
Filed under: Filed under: sql server, stats, performance, blocking, tuning, query, stored procedure, statistics, parallelism, contribution
ASYNC_NETWORK_IO: query is slow

When you run normal SELECT statement from the Activity Monitor, the session has a status of "suspended", a command of "SELECT" and a wait type of "ASYNC_NETWORK_IO". What do you expect to the see the results and within the...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Wed, Aug 29 2007
Filed under: Filed under: sql server, performance, tuning, i/o, object, disks, type, wait
Performance Tuning - will I loss the indexing when using derived table?

This was the question asked by a Developer when we are investigating a performance loss issues on a database. To the point a derived table means a virtual table that's calculated on the fly from a select statement. By default using derived tables...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Tue, Aug 21 2007
Filed under: Filed under: sql server, performance, tuning, query, stored procedure, joins, indexed views
How to Analyze the PERFMON (SYSMON) data?

As you may aware the PERFMON (SYSMON) utility provides much information to analyze on the systems resource usage, I support and suggest to make use of this tool as much as you can with a default templates within our environment. You may be aware the data...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Mon, Aug 20 2007
Filed under: Filed under: sql server, perfmon, performance, analysis, databases, tuning, sysmon, tsql
Dig further for a process (SPID) using Query Analyzer (SQL 2000 version specific) not DBCC INPUTBUFFER though.

Based on this Troubleshoot a process (SPID) using tools & TSQL queries blog post I have been asked to provide same information within SQL Server 2000 version, as that talks about SQL 2005 version specific. Within SQL 2000 to troubleshoot further about...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Mon, Aug 20 2007
Filed under: Filed under: sql server, performance, tuning, reporting, troubleshoot, dbcc inputbuffer, transact sql
SQL Server Licensing for a quad CPU server, a mystery?

Microsoft Licensing methods for SQL Server is always a mystery! Though visiting HOWTOBUY says what type of license choose but nothing much to understand. Scalable link explains bit more than that page. Still I have to search for a quest on how many processor...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Thu, Aug 16 2007
Filed under: Filed under: sql server, performance, microsoft, tuning, processor, quad
Dust out few tasks to gain transactional replication performance in SQL 2005

Coming to the basics of Transactional Replication, that starts with a simple snapshot of publication database data. Similar to the name the process is carried upon the fashion of transactions and subsequent data changes and schema modifications made at...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Thu, Aug 16 2007
Filed under: Filed under: sql server, performance, integration, tuning, ssas, ssms, replication, transactional, hardware
Make use of tools and utilities that are available in SQL Server - performance & tuning

There are various tools available within SQL Server installation such as SQLDIag, SQLDumper, PSSDiag (to be downloaded as a seperate tool), SYSMON(PERFMON) and Profiler etc. Among these SqlDiag and Sqldumper are most important to get more information...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Sun, Jul 8 2007
Filed under: Filed under: performance, tuning, query, error, kba, script, troubleshoot, sqldiag, sqldumper
SQL Server 2005- Is it possible to schedule Data Tuning Advisor?

I came across interesting post in SSP looking for a way of automating the Database Tuning Advisor tool of SQL Server 2005 with the help of SQLServer Agent. As the originator looking to schedule it on a regular basis to scan a trace (Profiler) file and...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Fri, Jun 15 2007
Filed under: Filed under: sql server, profiler, performance, tuning, database, dta
SQL Server 2005 Performance tuning tools for PASS members

SQL Server 2005 Performance Tuning Tools for PASS Members Whether you're thinking about migrating to SQL Server 2005 or you've already made the leap, this collection of expert tips from SearchSQLServer.com will guide you toward optimizing Microsoft's...

Posted to SQLServer-QA.net - Knowledge Sharing Network (SSQA.net) by on Fri, May 4 2007
Filed under: Filed under: sql server, performance, tuning, pass, membership

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