From owner-freebsd-hackers Sat Aug 3 21:56: 6 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 95A2D37B400 for ; Sat, 3 Aug 2002 21:56:03 -0700 (PDT) Received: from mail.pcnet.com (pcnet1.pcnet.com [204.213.232.3]) by mx1.FreeBSD.org (Postfix) with ESMTP id EC7E343E42 for ; Sat, 3 Aug 2002 21:56:02 -0700 (PDT) (envelope-from eischen@pcnet1.pcnet.com) Received: from localhost (eischen@localhost) by mail.pcnet.com (8.12.3/8.12.1) with ESMTP id g744u1r8021494; Sun, 4 Aug 2002 00:56:01 -0400 (EDT) Date: Sun, 4 Aug 2002 00:56:01 -0400 (EDT) From: Daniel Eischen To: hackers@freebsd.org Cc: kbayer@ligo.mit.edu Subject: Re: raid disks in FreeBSD (fwd) Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Anyone know how to best tune a system for RAID performance? Keith, what kind of RAID controller is it? [ Keith, yes, my email address is still the same, even though it looks like I come from elsewhere at times. ] ---------- Forwarded message ---------- Date: Sat, 3 Aug 2002 17:32:07 -0400 From: Keith Bayer To: Daniel Eischen Subject: Re: raid disks in FreeBSD Thanks. I went ahead and did it. FreeBSD stacks up pretty well against RedHat 7.3 (using bonnie++ and raw dd) except for sequential block input where it gets beaten 170MB/s to 70MB/s. I'm using soft updates but haven't tuned the fs beyond that. Might you have any suggestions on how I could tweak the filesystem to get better sequential input in block mode? Just ignore me if you're busy - I'm really just playing around here. Even if FreeBSD's numbers are better, I seriously doubt that I could get the project to switch over anyway. Just noticed - did you change your email address from vigrid? thanks, Keith -- 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 +++++ +++ +++++ +++ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message