Comments for Glenn Berry's SQL Server Performance http://sqlserverperformance.wordpress.com Semi-random musings about SQL Server performance Thu, 24 May 2012 15:40:44 +0000 hourly 1 http://wordpress.com/ Comment on Dell 12th Generation Server Cheat Sheet by Glenn Berry http://sqlserverperformance.wordpress.com/2012/05/15/dell-12th-generation-server-cheat-sheet/#comment-5974 Thu, 24 May 2012 15:40:44 +0000 https://sqlserverperformance.wordpress.com/?p=1816#comment-5974 The E5-2690 will probably be 15-20% faster, depending on the workload because of the faster base clock speed and the faster Turbo Boost speeds. ]]> Comment on Looking For Unused Stored Procedures In SQL Server 2008 by Glenn Berry http://sqlserverperformance.wordpress.com/2009/07/08/looking-for-unused-stored-procedures-in-sql-server-2008/#comment-5973 Thu, 24 May 2012 15:34:24 +0000 http://sqlserverperformance.wordpress.com/2009/07/08/looking-for-unused-stored-procedures-in-sql-server-2008#comment-5973 Maybe your healthcheck stored procedures are called with the WITH RECOMPILE option, so their plans are not cached. ]]> Comment on Suggested Max Memory Settings for SQL Server 2005/2008 by Glenn Berry http://sqlserverperformance.wordpress.com/2009/10/29/suggested-max-memory-settings-for-sql-server-20052008/#comment-5972 Thu, 24 May 2012 15:32:13 +0000 http://sqlserverperformance.wordpress.com/2009/10/29/suggested-max-memory-settings-for-sql-server-20052008#comment-5972 If the OS is low enough on memory, it will set a flag that is supposed to signal to applications that they should try to release some memory. If this happens to SQL Server, it can have a bad effect on performance (when some of its working set is paged out of memory). If the OS gets critically low on memory, it might cause the entire OS to become unstable and perhaps even lock up or freeze. ]]> Comment on Suggested Max Memory Settings for SQL Server 2005/2008 by Jānis (@janis1983m) http://sqlserverperformance.wordpress.com/2009/10/29/suggested-max-memory-settings-for-sql-server-20052008/#comment-5970 Thu, 24 May 2012 10:29:10 +0000 http://sqlserverperformance.wordpress.com/2009/10/29/suggested-max-memory-settings-for-sql-server-20052008#comment-5970 “which can cause instability and performance problems”- what exactly is those performance problems? High IO i guess? Or it could also be possible that this memory setting causes high CPU usage at some points of time? ]]> Comment on Analyzing TPC-E Benchmark Performance by Physical Processor Core by Glenn Berry http://sqlserverperformance.wordpress.com/2012/05/23/analyzing-tpc-e-benchmark-performance-by-physical-processor-core/#comment-5966 Wed, 23 May 2012 18:07:14 +0000 https://sqlserverperformance.wordpress.com/?p=1825#comment-5966 I suspect a lot of license cost sensitive SQL Server DBAs will like the higher clock speed, quad-core E5-2600 series processors. I always like to see new TPC-E submissions! ]]> Comment on Analyzing TPC-E Benchmark Performance by Physical Processor Core by kevinclosson http://sqlserverperformance.wordpress.com/2012/05/23/analyzing-tpc-e-benchmark-performance-by-physical-processor-core/#comment-5965 Wed, 23 May 2012 17:46:23 +0000 https://sqlserverperformance.wordpress.com/?p=1825#comment-5965 Good post! Like I always say, don’t confuse a “big” CPU with a “fast” CPU. The EP/EN packages virtually always cast a shadow over EX on a per-core basis. When licensing software by the core this fact is all that matters!

The server vendors are making large-memory 2S systems which use to be the turf of servers based on 4 or more sockets. For instance, Cisco has a UCS model (the 220 ) that supports 2/4TB RAM and 2S. And those 2S can be populated with the smoking hot E5-2643 which is a very high clock rate, Turbo Boost 2.0, SMT SKU with only 4 cores at 130W. If only there were a TPC-E with that SKU!

]]> Comment on SQL Server 2008 Diagnostic Information Queries (May 2012) by Glenn Berry http://sqlserverperformance.wordpress.com/2012/04/30/sql-server-2008-diagnostic-information-queries-may-2012/#comment-5963 Wed, 23 May 2012 15:37:23 +0000 https://sqlserverperformance.wordpress.com/?p=1777#comment-5963 Thanks for pointing those changes out. ]]> Comment on SQL Server 2005 Diagnostic Information Queries (May 2012) by Derek Colley http://sqlserverperformance.wordpress.com/2012/05/03/sql-server-2005-diagnostic-information-queries-may-2012/#comment-5955 Tue, 22 May 2012 13:52:52 +0000 https://sqlserverperformance.wordpress.com/?p=1802#comment-5955 Hi Glenn, thanks for an excellent collection of useful diagnostic tools! These apply to later versions of SQL Server too so makes for a great addition to my toolkit. If only the customers would allow me time to diagnose before forcing a server reboot … sigh :-) ]]> Comment on How To Get SQL Server CPU Utilization From a Query by Mohan http://sqlserverperformance.wordpress.com/2009/07/30/how-to-get-sql-server-cpu-utilization-from-a-query/#comment-5953 Tue, 22 May 2012 10:00:11 +0000 http://sqlserverperformance.wordpress.com/2009/07/30/how-to-get-sql-server-cpu-utilization-from-a-query#comment-5953 Great!! It is very very useful for me ]]> Comment on SQL Server 2008 SP3 Cumulative Update 5 Released by Dukagjin Maloku http://sqlserverperformance.wordpress.com/2012/05/21/sql-server-2008-sp3-cumulative-update-5-released/#comment-5952 Tue, 22 May 2012 05:53:02 +0000 https://sqlserverperformance.wordpress.com/?p=1823#comment-5952 Thanks for the info! ]]>