From: | Vivek Khera <khera(at)kcilink(dot)com> |
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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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Lists: | pgsql-performance |
>>>>> "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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Vivek Khera, Ph.D. Khera Communications, Inc.
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