Re: increase performancr with "noatime"?

From: Vivek Khera <khera(at)kcilink(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: increase performancr with "noatime"?
Date: 2003-09-09 16:08:55
Message-ID: x74qzmgd0o.fsf@yertle.int.kciLink.com
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>>>>> "AS" == Andrew Sullivan <andrew(at)libertyrms(dot)info> writes:

AS> On Tue, Sep 09, 2003 at 04:12:48PM +0800, JM wrote:
>> would it cause problem in postgres DB if /var/lib/psql partition is mounted
>> with "noatime"?

AS> No; in fact, that's been suggested by many people. I don't know
AS> whether anyone's done any tests to prove that it helps.

I honestly can't expect it to be much of an improvement since the
number of files involved compared with the size of the files is
minimal. However, if you're opening/closing the files often it might
cause you problems. I think in the normal case where it does matter
you have pooled connections so the open/close happens rarely.

Of course, if I had a good synthetic workload to pound on my DB, I'd
run a test... Sean?

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