Re: [PATCH] Revert default wal_sync_method to fdatasync on Linux 2.6.33+

From: Greg Smith <greg(at)2ndquadrant(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Josh Berkus <josh(at)agliodbs(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers(at)postgresql(dot)org, Marti Raudsepp <marti(at)juffo(dot)org>
Subject: Re: [PATCH] Revert default wal_sync_method to fdatasync on Linux 2.6.33+
Date: 2010-11-07 23:44:48
Message-ID: 4CD739F0.20308@2ndquadrant.com
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Tom Lane wrote:
> I'm hoping that Greg Smith will take the lead on testing
> this, since he seems to have spent the most time in the area so far.
>

It's not coincidence that the chapter of my book I convinced the
publisher to release as a sample is the one that covers this area; this
mess has been visibly approaching for some time now. I'm going to put
RHEL6 onto a system and start collecting some proper slowdown numbers
this week, then pass along a suggested test regime for others.

--
Greg Smith 2ndQuadrant US greg(at)2ndQuadrant(dot)com Baltimore, MD

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