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Re: setting up raid10 with more than 4 drives
- From: PFC <lists(at)peufeu(dot)com>
- To: "Luke Lonergan" <LLonergan(at)greenplum(dot)com>, "Michael Stone" <mstone+postgres(at)mathom(dot)us>, pgsql-performance(at)postgresql(dot)org
- Subject: Re: setting up raid10 with more than 4 drives
- Date: Wed, 30 May 2007 17:40:50 +0200
Oh by the way, I saw a nifty patch in the queue : Find a way to reduce rotational delay when repeatedly writing last WAL pageCurrently fsync of WAL requires the disk platter to perform a full rotation to fsync again. One idea is to write the WAL to different offsets that might reduce the rotational delay.
This will not work if the WAL is on RAID1, because two disks never spin exactly at the same speed...
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- From: Luke Lonergan
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