How the table sysperfinfo works?

  • Hello,

    I must known the number of deadlocks on my sql server, i've found that there's a column number of deadlocks/ sec in the sysperfinfo table, but how does that works?

    I've generated a deadlock on my system and the counter increases from 1 to 2, but an hour later (and without any deadlock) the counter is not decreased back to one.

    I don't understand why the description says deadlocks / seconds, but it's not measured over a 1 second period?

    Are this columns mislabled and they only increase, and if I will take the number / deadlocks over an hour I need to minus the current value with the previous value in this column?

  • Some counters in sysperfinfo are monotonically increasing values. So they are no reset.

    See http://support.microsoft.com/kb/555064

    You can also downlad a script from SQL Magazine which helps intepreting sysperfinfo

    http://www.sqlmag.com/Articles/ArticleID/26950/26950.html?Ad=1

    [font="Verdana"]Markus Bohse[/font]

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