Date: Thu, 17 Jan 2008 22:49:25 +0100 (CET) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: robert@webtent.com Cc: FreeBSD <freebsd-questions@freebsd.org> Subject: Re: db performance Message-ID: <20080117224645.D5606@wojtek.tensor.gdynia.pl> In-Reply-To: <1200605532.7281.74.camel@columbus.webtent.org> References: <1200602606.7281.48.camel@columbus.webtent.org> <20080117221629.Y5573@wojtek.tensor.gdynia.pl> <1200605532.7281.74.camel@columbus.webtent.org>
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>> is used)? what is more stupid? whould we vote? > > That was my whole point of showing you the low usage. I take that as a > yes, RAID 1+0 would provide a dramatic difference in speed, thanks! the only adventage of RAID-5 is less "wasted" space than RAID-1. one and the only adventage. write performance is terrible on small writes - exactly what happens on database usage. with today sizes of disks more "wasted" space doesn't make much a problem, as i don't think your database have hundreds of gigabytes. did you look how much disks (no matter what RAID or just devices) are actually used?! use systat
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