I would have thought I would at least see the raw single drive throughput, plus maybe a bit more. I've benched these drives independantly at 20+ MB/second... Is the 3ware card really slowing things down that much with the RAID-5 overhead?
What "real HW RAID-5" controller would you suggest? I'd like to stick with IDE/ATA since I have a bunch of drives already. Am I maybe CPU bound, or have another issue? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chuck Swiger Sent: Thursday, March 16, 2006 5:43 AM To: Don O'Neil Cc: [email protected] Subject: Re: Raidtest/3Ware 6000 Throughput Don O'Neil wrote: [ ... ] > Does this seem accurate? Should I only be seeing 4.7 MB/second > throughput or is raidtest just not a good way to measure peak throughput? > > Any thoughts would be appreciated. It does not astonish me that you get 5 MB/s on a RAID-5 config, although if you used SCSI and/or a real HW RAID-5 controller with significant cache (ie, 64+ MB) that would help the performance by quite a bit. Use RAID-5 for read-only or read-mostly situations and you'll be better off; use RAID-10 for write-heavy filesystems instead. -- -Chuck _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]" _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
