Performance Tuning Stored Procedures

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Performance Tuning Stored Procedures

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Jeff Moden SSC Guru Points: 1004301 More actions · Answer 1

I believe it's because some of the system owned spids are doing work in the background. On a dead quiet system, SQL Server has a "heartbeat" that occurs about once every 5 or 6 seconds that can be seen in the Performance tab of Windows Task Manager (at least in XP).

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

adam cassel Grasshopper Points: 19 More actions · Answer 2

@steve-2: Thank you for sharing this knowledge and instigating a great dialogue. I have dived into perf tuning and trying to swim much deeper than I've been given the opportunity to in the past, so this has been a valuable find for me. @jeff Moden: This CPU time with the process id code, way cool, thank you so much for that and for the heads up on SysProcesses.

Simon E Doubt SSCarpal Tunnel Points: 4191 More actions · Answer 3

Obviously a very stimulating article, Steve - kudos. 🙂

I too used it as a starting point for how to track the total time that a proc was taking to run, and discovered valuable input from others who posted in this thread on the different metrics available.