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Re: User concurrency thresholding: where do I look?

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: User concurrency thresholding: where do I look?
Date: 2007-07-31 21:33:20
Message-ID: 200707311433.20568.josh@agliodbs.com (view raw or flat)
Thread:
Lists: pgsql-performance
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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