Horton

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

Greg Smith <greg@2ndquadrant.com>

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From: Greg Smith <greg@2ndquadrant.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Josh Berkus <josh@agliodbs.com>, Andres Freund <andres@anarazel.de>, pgsql-hackers@postgresql.org, Marti Raudsepp <marti@juffo.org>
Date: 2010-11-07T23:44:48Z
Lists: pgsql-hackers 
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@2ndQuadrant.com   Baltimore, MD