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Re: Defaulting wal_sync_method to fdatasync on Linux for 9.1?

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: Defaulting wal_sync_method to fdatasync on Linux for 9.1?
Date: 2010-11-16 23:25:13
Message-ID: 4CE312D9.6030503@agliodbs.com (view raw or flat)
Thread:
Lists: pgsql-performance
On 11/16/10 12:39 PM, Greg Smith wrote:
> I want to next go through and replicate some of the actual database
> level tests before giving a full opinion on whether this data proves
> it's worth changing the wal_sync_method detection.  So far I'm torn
> between whether that's the right approach, or if we should just increase
> the default value for wal_buffers to something more reasonable.

We'd love to, but wal_buffers uses sysV shmem.

-- 
                                  -- Josh Berkus
                                     PostgreSQL Experts Inc.
                                     http://www.pgexperts.com

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Subject: Re: Defaulting wal_sync_method to fdatasync on Linux for 9.1?
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