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An Informal Look at Database Performance


An Informal Look at Database Performance

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TheSQLGuru
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Nadrek (9/8/2010)
Nice overview; I'd like to encourage the addition of looking at SQL Profiler CPU, Reads, Writes, and Duration columns on SQL:BatchCompleted events.

Not only do these show aggregates, if you do this on a regular basis, you'll get a good, trained idea of when a query is using "too much" of any of them.


This is VERY helpful for anyone who has UDFs in their system too, since it is the ONLY way you can see how bad they really are.

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Kevin G. Boles
SQL Server Consultant
SQL MVP 2007-2012
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TheSQLGuru
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I will add as a minor point that non-clustered index fragmentation (at least the extent kind) usually doesn't matter that much since the seeks tend to be random in nature anyway.

Nice coverage of many of the things to look out for.

Best,
Kevin G. Boles
SQL Server Consultant
SQL MVP 2007-2012
TheSQLGuru on googles mail service
SQLRNNR
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Nice article. Thanks Tim.

Jason...AKA CirqueDeSQLeil
_______________________________________________
I have given a name to my pain...MCM SQL Server, MVP
SQL RNNR
Posting Performance Based Questions - Gail Shaw
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