Date: Thu, 1 Apr 1999 16:49:35 +0930 From: Greg Lehey <grog@lemis.com> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: FreeBSD Hackers <hackers@FreeBSD.ORG>, FreeBSD SCSI Mailing List <freebsd-scsi@FreeBSD.ORG> Subject: Re: CCD and Vinum compared with new performance measuring tool Message-ID: <19990401164935.Z413@lemis.com> In-Reply-To: <199904010717.XAA53772@apollo.backplane.com>; from Matthew Dillon on Wed, Mar 31, 1999 at 11:17:02PM -0800 References: <19990401122922.Q413@lemis.com> <199904010717.XAA53772@apollo.backplane.com>
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On Wednesday, 31 March 1999 at 23:17:02 -0800, Matthew Dillon wrote: >> >> In the past few weeks, I've been bitching about the fact that bonnie >> doesn't do what I want in measuring storage device performance. I've >> now solved the problem: I've written another program. You can pick it >> up at ftp://ftp.lemis.com/pub/rawio.tar.gz. From the man page: >> >> DESCRIPTION >> rawio tests the speed of the low-level character I/O device special in a >> concurrent environment. It is intended for comparisons of storage de- >> .. > > Just a quick side note: There are known performance problems with the > new getnewbuf() in -4.x. These problems have been solved, but not yet > committed. Thanks for the info. I've noticed that the individual subprocesses tend to run at very different speeds. Does it have anything to do with that? 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-hackers" in the body of the message
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