Date: Mon, 1 Dec 2003 00:10:51 -0700 From: "Chad Leigh -- Shire.Net LLC" <chad@shire.net> To: Sander Smeenk <ssm+fbsd-questions@freshdot.net> Cc: freebsd-questions@freebsd.org Subject: Re: Vinum & U320 SCSI, slower than UDMA100 IDE ? Message-ID: <7F4B0982-23CD-11D8-8529-003065A70D30@shire.net> In-Reply-To: <20031127124435.GA24772@freshdot.net> References: <20031127124435.GA24772@freshdot.net>
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On Nov 27, 2003, at 5:44 AM, Sander Smeenk wrote: > Hi, > > I recently installed a Dual P4 2.8ghz with FBSD 4.9 and made a RAID10 > array of the 4 scsi disks available. The idea was that this would be > faster to read from than normal IDE disks. As a test I took the > company's web/ directory, which is 1.6gb in size and has 22082 files. > <snip> > I know it's not the most sophisticated test, but at least it shows that > on the IDE disk, this 'test' took 24 seconds to complete. On the RAID10 > array it took a whopping 73 seconds to complete. > > I would understand if the RAID10 array was as fast as IDE, or faster, > but i'm a bit amazed by these results. The RAID10 array was built on 4x > 36.7gb Ultra320 SCSI disks, connected to an Adaptec 39320D Ultra320 > SCSI > adapter, which is a PCI-X card, configured in a PCI-X slot. > Try creating the same vinum set using 4 ATA100 disks and see what happens when compared to your UeberSCSI vinum set... Chad
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