From: Greg Smith <gsmith@gregsmith.com>
To: alan bryan <alan.bryan@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Performance tuning on FreeBSD
Date: Tue, 4 Mar 2008 05:22:43 -0500 (EST)
Message-ID: <Pine.GSO.4.64.0803040519020.25098@westnet.com> (raw)
In-Reply-To: <892916310803040115q70762bbeibfdcfc536196e099@mail.gmail.com>
References: <892916310803031539scffd5bchcce5a848b3a57a32@mail.gmail.com>
<Pine.GSO.4.64.0803032005020.23114@westnet.com>
<892916310803040115q70762bbeibfdcfc536196e099@mail.gmail.com>
On Tue, 4 Mar 2008, alan bryan wrote:
> There seems to be something really wrong with disk performance. Here's
> the results from bonnie
So input speed is reasonable but write throughput is miserable--<10MB/s.
I'd suggest taking this to one of the FreeBSD lists; this doesn't look
like a PostgreSQL problem.
> This is on FreeBSD 7.0-Release. I tried ULE and 4BSD schedulers with
> no difference. Maybe I'll try FreeBSD 6.3 to see what that does?
The other thing you might consider is booting with a Linux live CD/DVD
(something like Ubuntu would work) and running bonnie++ from there to see
what you get. Help to sort out whether this ia a server problem or an OS
one.
--
* Greg Smith gsmith@gregsmith.com http://www.gregsmith.com Baltimore, MD
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To: pgsql-performance@postgresql.org
Cc: gsmith@gregsmith.com, alan.bryan@gmail.com
Subject: Re: Performance tuning on FreeBSD
In-Reply-To: <Pine.GSO.4.64.0803040519020.25098@westnet.com>
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