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Re: User concurrency thresholding: where do I look?

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-performance(at)postgresql(dot)org, Alvaro Herrera <alvherre(at)commandprompt(dot)com>
Subject: Re: User concurrency thresholding: where do I look?
Date: 2007-07-20 04:38:39
Message-ID: 200707192138.39679.josh@agliodbs.com (view raw or flat)
Thread:
Lists: pgsql-performance
Tom,

> Well, if the load is a lot of short writing transactions then you'd
> expect the throughput to depend on how fast stuff can be pushed down to
> WAL.  What have you got wal_buffers set to?  Are you using a commit
> delay?  What's the I/O system anyway (any BB write cache on the WAL
> disk?) and what wal sync method are you using?

You know, I think Jignesh needs to me on this list so I can stop relaying 
questions on a workload I didn't design.  Let me get him.

-- 
Josh Berkus
PostgreSQL @ Sun
San Francisco

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