From: Gavin Sherry <swm@alcove.com.au>
To: Joe <svn@freedomcircle.net>
Cc: Magnus Hagander <mha@sollentuna.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: Comparative performance
Date: Thu, 29 Sep 2005 22:31:06 +1000 (EST)
Message-ID: <Pine.LNX.4.58.0509292230310.26600@linuxworld.com.au> (raw)
In-Reply-To: <433BDB0B.8010002@freedomcircle.net>
References: <6BCB9D8A16AC4241919521715F4D8BCE92E6D6@algol.sollentuna.se>
<433BDB0B.8010002@freedomcircle.net>
On Thu, 29 Sep 2005, Joe wrote:
> Magnus Hagander wrote:
> > That actually depends a lot on *how* you use it. I've seen pg-on-windows
> > deployments that come within a few percent of the linux performance.
> > I've also seen those that are absolutely horrible compared.
> >
> > One sure way to kill the performance is to do a lot of small
> > connections. Using persistent connection is even more important on
> > Windows than it is on Unix. It could easily explain a difference like
> > this.
>
> I just tried using pg_pconnect() and I didn't notice any significant
> improvement. What bothers me most is that with Postgres I tend to see jerky
> behavior on almost every page: the upper 1/2 or 2/3 of the page is displayed
> first and you can see a blank bottom (or you can see a half-filled completion
> bar). With MySQL each page is generally displayed in one swoop.
Please post the table definitions, queries and explain analyze results so
we can tell you why the performance is poor.
Gavin
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To: pgsql-performance@postgresql.org
Cc: swm@alcove.com.au, svn@freedomcircle.net, mha@sollentuna.net
Subject: Re: Comparative performance
In-Reply-To: <Pine.LNX.4.58.0509292230310.26600@linuxworld.com.au>
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