http://blogs.msdn.com/psssql/archive/2007/08/19/sql-server-2005-rdtsc-truths-and-myths-discussed.aspxI posted some updates to my blog entry about the RDTSC and drift warnings in May. See the following link http://blogs.msdn.com/psssql/archive/2006/11/27/sql-server-2005-sp2-will-introduce-new-messages-to-the-error-log-related-to-timing-activities.aspxenCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/psssql/archive/2007/08/19/sql-server-2005-rdtsc-truths-and-myths-discussed.aspx#6170472Tue, 13 Nov 2007 14:54:02 GMT91d46819-8472-40ad-a661-2c78acb4018c:6170472delta » Blog Archive » SQL Server 2005 - RDTSC Truths and Myths Discussed<p>PingBack from <a rel="nofollow" target="_new" href="http://delta.wpbloggers.com/delta/?p=144">http://delta.wpbloggers.com/delta/?p=144</a></p> http://blogs.msdn.com/psssql/archive/2007/08/19/sql-server-2005-rdtsc-truths-and-myths-discussed.aspx#7382438Sat, 02 Feb 2008 07:47:13 GMT91d46819-8472-40ad-a661-2c78acb4018c:7382438Technical Notes<p>Author: Robert Dorr, Keith Elmore, Lindsey Allen Introduction Have you ever asked the question: &amp;#8220;If</p> http://blogs.msdn.com/psssql/archive/2007/08/19/sql-server-2005-rdtsc-truths-and-myths-discussed.aspx#8333756Mon, 24 Mar 2008 19:04:30 GMT91d46819-8472-40ad-a661-2c78acb4018c:8333756RobertDavis<P>We have a situation where we are being told by our storage team that the I\O stall warnings are due to CPU drift. However, we are not seeing any warnings in the SQL log related to CPU drift itself.</P> <P>Is it feasible that CPU drift could cause stall warnings to be falsely reported but the CPU drift itself would not be reported?</P> <P>Thanks in advance for any insight and for this great reference article.</P> <P>Regards,</P> <P>Robert Davis.</P> <P>[RDORR] Robert, the CPU drift can cause the stalled warnings but I have never seen the warning without the SQL Server error log warning.&nbsp;&nbsp; To cause the I/O warning the drift would have to be over 15 seconds and I simply have yet to see a case like this.&nbsp;&nbsp; If you are getting stall warnings start looking at PerfMon avg disk sec/transfer during these windows.</P> <P>&nbsp;</P>http://blogs.msdn.com/psssql/archive/2007/08/19/sql-server-2005-rdtsc-truths-and-myths-discussed.aspx#8622285Thu, 19 Jun 2008 19:33:55 GMT91d46819-8472-40ad-a661-2c78acb4018c:8622285Troubleshooting Microsoft SQL Server<p>What does the “I/O request” error below represent? 2008-04-21 13:26:42.480 spid364 Microsoft SQL Server</p> http://blogs.msdn.com/psssql/archive/2007/08/19/sql-server-2005-rdtsc-truths-and-myths-discussed.aspx#9229175Wed, 17 Dec 2008 02:47:11 GMT91d46819-8472-40ad-a661-2c78acb4018c:9229175CSS SQL Server Engineers<p>Many of you have encountered the RDTSC timing variances that I outlined in an earlier blog post:&amp;#160;&amp;#160;</p> http://blogs.msdn.com/psssql/archive/2007/08/19/sql-server-2005-rdtsc-truths-and-myths-discussed.aspx#9231343Wed, 17 Dec 2008 21:11:51 GMT91d46819-8472-40ad-a661-2c78acb4018c:9231343Aaron Bertrand<p>I recently posted about the availability of SQL Server 2005 SP3. I have a bit more information about</p> http://blogs.msdn.com/psssql/archive/2007/08/19/sql-server-2005-rdtsc-truths-and-myths-discussed.aspx#9655676Fri, 29 May 2009 20:25:46 GMT91d46819-8472-40ad-a661-2c78acb4018c:9655676CSS SQL Server Engineers<p>A series of questions related to start time, duration, end time, T-SQL waitfor delay command and others</p>