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Re: fine tuning for logging server

From: Florin Andrei <florin(at)andrei(dot)myip(dot)org>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: fine tuning for logging server
Date: 2005-03-31 02:24:38
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
On Wed, 2005-03-30 at 19:59 -0600, John Arbash Meinel wrote:

> Put pg_xlog onto the same drive as the OS, not the drive with the database.

I forgot to mention: the OS drive is purposefully made very slow - the
write cache is turned off and the FS is Ext3 with data=journal. Is then
still ok to put pg_xlog on it?

The reason: if the power cord is yanked, the OS _must_ boot back up in
good condition. If the DB is corrupted, whatever, nuke it then re-
initialize it. But the OS must survive act-of-god events.

No, there is no uninterruptible power supply. It sucks, but that's how
it is. I cannot change that.

Florin Andrei

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