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Re: [HACKERS] Re: v7.1b4 bad performance

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp>
Cc: tgl(at)sss(dot)pgh(dot)pa(dot)us, peter(dot)schmidt(at)prismedia(dot)com, pgsql-hackers(at)postgresql(dot)org, pgsql-admin(at)postgresql(dot)org
Subject: Re: [HACKERS] Re: v7.1b4 bad performance
Date: 2001-02-19 16:50:02
Message-ID: 200102191650.LAA03334@candle.pha.pa.us (view raw or flat)
Thread:
Lists: pgsql-adminpgsql-hackers
I did not realize how much WAL improved performance when using fsync.

> > "Schmidt, Peter" <peter(dot)schmidt(at)prismedia(dot)com> writes:
> > > So, is it OK to use commit_delay=0?
> > 
> > Certainly.  In fact, I think that's about to become the default ;-)
> 
> I agree with Tom. I did some benchmarking tests using pgbench for a
> computer magazine in Japan. I got a almost equal or better result for
> 7.1 than 7.0.3 if commit_delay=0. See included png file.
> --
> Tatsuo Ishii

[ Attachment, skipping... ]


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