Wednesday, July 04, 2007

sysperfinfo not time - adjusted

Recently, I come across a monitoring tool that uses sysperfinfo table to get out number of dead locks/second. It took me a good few minutes to figure out that using this value as a time – adjusted counter was wrong. I am not sure if it is by design or a bug in Microsoft that some of the counters are not time-adjusted. So, the values you are getting for this particular counter is an incremental value. While digging a bit into Microsoft knowledge base I came across an article written by Geoff Hiten (MVP) in February 25, 2004 and it has been reported as a bug. This shows that some of monitoring tools shows you wrong information. To view the article click sysperfinfo not time - adjusted. This article lists the counters that are affected.

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