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Re: Benchmark: Dell/Perc 6, 8 disk RAID 10


  • From: "Joshua D. Drake" <jd(at)commandprompt(dot)com>
  • To: Greg Smith <gsmith(at)gregsmith(dot)com>
  • Cc: Craig James <craig_james(at)emolecules(dot)com>, pgsql-performance(at)postgresql(dot)org
  • Subject: Re: Benchmark: Dell/Perc 6, 8 disk RAID 10
  • Date: Thu, 13 Mar 2008 14:06:18 -0700
  • Message-id: <20080313140618(dot)3449ba58(at)commandprompt(dot)com>

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On Thu, 13 Mar 2008 12:01:50 -0400 (EDT)
Greg Smith <gsmith(at)gregsmith(dot)com> wrote:

> On Thu, 13 Mar 2008, Craig James wrote:
> 
> >> wal_sync_method = open_sync
> 
> There was a bug report I haven't had a chance to investigate yet that 
> suggested some recent Linux versions have issues when using
> open_sync. I'd suggest popping that back to the default for now
> unless you have time to really do a long certification process that
> your system runs reliably with it turned on.

Well the default would be ugly, that's fsync, fdatasync is probably a
better choice in that case.

Sincerely,

Joshua D. Drake


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