Re: User concurrency thresholding: where do I look?

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Josh Berkus
Тема
Re: User concurrency thresholding: where do I look?
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200707311433.20568.josh@agliodbs.com
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User concurrency thresholding: where do I look? Josh Berkus <josh@agliodbs.com>
Re: User concurrency thresholding: where do I look? Alvaro Herrera <alvherre@commandprompt.com>
Re: User concurrency thresholding: where do I look? Josh Berkus <josh@agliodbs.com>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? Alvaro Herrera <alvherre@commandprompt.com>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? Josh Berkus <josh@agliodbs.com>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? Josh Berkus <josh@agliodbs.com>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? "Simon Riggs" <simon@2ndquadrant.com>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? "Simon Riggs" <simon@2ndquadrant.com>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? "Simon Riggs" <simon@2ndquadrant.com>
Re: User concurrency thresholding: where do I look? "Simon Riggs" <simon@2ndquadrant.com>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? "Simon Riggs" <simon@2ndquadrant.com>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? "Simon Riggs" <simon@2ndquadrant.com>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? "Simon Riggs" <simon@2ndquadrant.com>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? "Simon Riggs" <simon@2ndquadrant.com>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? "Simon Riggs" <simon@2ndquadrant.com>
Re: User concurrency thresholding: where do I look? Josh Berkus <josh@agliodbs.com>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? Alvaro Herrera <alvherre@commandprompt.com>
Re: User concurrency thresholding: where do I look? "Simon Riggs" <simon@2ndquadrant.com>
CLOG Patch "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: CLOG Patch "Simon Riggs" <simon@2ndquadrant.com>
Re: CLOG Patch "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: CLOG Patch "Simon Riggs" <simon@2ndquadrant.com>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? Robert Lor <Robert.Lor@Sun.COM>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? "Simon Riggs" <simon@2ndquadrant.com>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? David Boreham <david_list@boreham.org>
Re: User concurrency thresholding: where do I look? Tom Lane <tgl@sss.pgh.pa.us>
Re: User concurrency thresholding: where do I look? "Jignesh K. Shah" <J.K.Shah@Sun.COM>
Re: User concurrency thresholding: where do I look? Greg Smith <gsmith@gregsmith.com>
Re: User concurrency thresholding: where do I look? Josh Berkus <josh@agliodbs.com>
Re: User concurrency thresholding: where do I look? "Joshua D. Drake" <jd@commandprompt.com>
Re: User concurrency thresholding: where do I look? Gregory Stark <stark@enterprisedb.com>
Re: User concurrency thresholding: where do I look? "Joshua D. Drake" <jd@commandprompt.com>
Re: User concurrency thresholding: where do I look? Greg Smith <gsmith@gregsmith.com>
Simon,

> Well thats pretty weird. That code path clearly only happens once per
> transaction and ought to be fast. The other code paths that take
> ProcArrayLock like TransactionIdIsInProgress() and GetSnapshotData()
> ought to spend more time holding the lock. Presumably you are running
> with a fair number of SERIALIZABLE transactions?

Given that this is TPCC-analog, I'd assume that we are.

Jignesh?

-- 
--Josh

Josh Berkus
PostgreSQL @ Sun
San Francisco
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