Date: Sun, 28 Sep 2008 17:01:20 +0200 (CEST) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: Danny Do <ai_quoc@hotmail.com> Cc: freebsd-questions@freebsd.org Subject: RE: Hard disk bottle neck. Message-ID: <20080928170001.E96919@wojtek.tensor.gdynia.pl> In-Reply-To: <BAY139-DAV95C49C49907D7EFE01A0190410@phx.gbl> References: <00d101c92154$691f53c0$3b5dfb40$@com> <48DF78C3.9080401@infracaninophile.co.uk> <BAY139-DAV95C49C49907D7EFE01A0190410@phx.gbl>
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> #ifndef MAXDUMPPGS > > I'll update the result. I'll tell you how I go. Maybe sometimes in the next > fortnight. > > Thanks everyone, thanks Wojciech Puchar, > > Danny anyway - how your RAID5 is configured? didn't you selected SMALL stripe sizes? this way - every large read uses 3 disks in parallel, instead of spreading multiple reads on multiple disks. RAID5 performance is high on reads, when configured properly, and when the RAID solution is right.
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