Date: Mon, 5 Aug 2002 12:12:51 +0930 From: Greg 'groggy' Lehey <grog@FreeBSD.org> To: Daniel Eischen <eischen@pcnet1.pcnet.com> Cc: hackers@freebsd.org, kbayer@ligo.mit.edu Subject: Re: raid disks in FreeBSD (fwd) Message-ID: <20020805024251.GD83171@wantadilla.lemis.com> In-Reply-To: <Pine.GSO.4.10.10208040050030.21139-100000@pcnet1.pcnet.com> References: <Pine.GSO.4.10.10208040050030.21139-100000@pcnet1.pcnet.com>
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On Sunday, 4 August 2002 at 0:56:01 -0400, Daniel Eischen wrote: > Anyone know how to best tune a system for RAID performance? Well, not with bonnie, anyway. The big difference you show below have nothing to do with the controller. The only bonnie test that comes close to measuring the storage subsystem is the random seeks test. > Keith, what kind of RAID controller is it? I suspect that this is the most important question. Greg > bonnie++ on RedHat7.3: > ---------------------- > > Version 1.02c ------Sequential Output------ --Sequential Input- --Random- > -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- > Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP > ldaspc1 4G 19609 89 25024 19 12918 7 24581 98 170855 40 444.4 1 > ------Sequential Create------ --------Random Create-------- > -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- > files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP > 16 2222 96 +++++ +++ +++++ +++ 2315 98 +++++ +++ 5867 98 > > bonnie++ on FreeBSD 4.6 Stable: > ------------------------------- > > Version 1.02c ------Sequential Output------ --Sequential Input- --Random- > -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- > Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP > ldaspc1.mit.edu 4G 31232 37 35220 17 17349 11 57123 73 76943 22 462.3 1 > ------Sequential Create------ --------Random Create-------- > -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- > files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP > 16 29511 64 +++++ +++ +++++ +++ 31783 69 +++++ +++ +++++ +++ -- See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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