From owner-freebsd-current Sat Sep 18 20:41:36 1999 Delivered-To: freebsd-current@freebsd.org Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by hub.freebsd.org (Postfix) with ESMTP id CF7D615496 for ; Sat, 18 Sep 1999 20:41:30 -0700 (PDT) (envelope-from grog@freebie.lemis.com) Received: (from grog@localhost) by freebie.lemis.com (8.9.3/8.9.0) id NAA98892; Sun, 19 Sep 1999 13:11:16 +0930 (CST) Date: Sun, 19 Sep 1999 13:11:16 +0930 From: Greg Lehey To: Matthew Dillon Cc: Brad Knowles , current@FreeBSD.ORG Subject: Re: 2xPIIIx450 results & NFS results (was More benchmarking stuff...) Message-ID: <19990919131116.L55065@freebie.lemis.com> References: <199909171658.JAA53751@apollo.backplane.com> <199909171817.LAA54393@apollo.backplane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.4i In-Reply-To: <199909171817.LAA54393@apollo.backplane.com>; from Matthew Dillon on Fri, Sep 17, 1999 at 11:17:48AM -0700 WWW-Home-Page: http://www.lemis.com/~grog X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Friday, 17 September 1999 at 11:17:48 -0700, Matthew Dillon wrote: > : Might I then request that you help rewrite it so that it performs > :a much more comprehensive testing of OS/filesystem throughput? > :Myself, I'd really love to see something that lets you seriously > :stress your system along the lines of Greg Lehey's rawio, but instead > :at a higher level. IMO, bonnie sucks worse than postmark, although > :they're measuring different things. > : > : Although it should certainly be forking, whether forking or not I > :can tell you that creating huge directories is not necessarily a bad > :simulation of a heavily-used mail server. I've seen mail servers > :with over 100,000 files in /var/spool/mqueue, both at former > :employers (like AOL), and at former customer sites (such as some of > :the largest freemail providers in the world). > > What we really need is something that generates a performance > curve based on several variables, including block size, locality of > reference (seek randomosity), amount of parallelism, locality of > parallelism (i.e. operating on same files vs different files), size of > dataset in bytes, and size of dataset in files. > > The program should dynamically mess with all the variables until it > gets a statistically relevant curve. > > I don't have the time to do it. Sniff! Sounds like rawio, sort of. It doesn't do files, though. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message