Re: Slow PITR restore

From: Jeff Trout <threshar(at)torgo(dot)978(dot)org>
To: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Slow PITR restore
Date: 2007-12-12 17:37:54
Message-ID: FD86DD7A-1A6C-4BF9-A509-E72307718B14@torgo.978.org
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On Dec 12, 2007, at 11:29 AM, Joshua D. Drake wrote:

> 8 seconds for a single archive recovery is very slow in
> consideration of this machine. Even single threaded that seems slow.
>

I've seen this on my PITR restores (thankfully, they were for
fetching some old data, not because we expoded). On a 2.4ghz opteron
it took 5-50 seconds per wal segment, and there were a LOT of
segments (replay took hours and hours). I asked a few folks and was
told it is the nature of the beast. Hopefully something in 8.4 can
be done.

--
Jeff Trout <jeff(at)jefftrout(dot)com>
http://www.dellsmartexitin.com/
http://www.stuarthamm.net/

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