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Discuss content posted by Timothy A Wiseman
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An Informal Look at Database Performance
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An Informal Look at Database Performance
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TheSQLGuru
TheSQLGuru
Posted Wednesday, September 08, 2010 7:31 PM
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Last Login: Today @ 11:52 AM
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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.
Best,
Kevin G. Boles
SQL Server Consultant
SQL MVP 2007-2012
TheSQLGuru at GMail
Post #982747
TheSQLGuru
TheSQLGuru
Posted Wednesday, September 08, 2010 7:33 PM
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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 at GMail
Post #982748
SQLRNNR
SQLRNNR
Posted Friday, September 10, 2010 11:35 PM
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Last Login: 2 days ago @ 1:07 PM
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Nice article. Thanks Tim.
Jason
AKA CirqueDeSQLeil
I have given a name to my pain...
MCM SQL Server 2008
SQL RNNR
Posting Performance Based Questions - Gail Shaw
Posting Data Etiquette - Jeff Moden
Hidden RBAR - Jeff Moden
VLFs and the Tran Log - Kimberly Tripp
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