From owner-freebsd-hackers Thu Jun 17 1:18:24 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (Postfix) with ESMTP id AE6ED14CA4 for ; Thu, 17 Jun 1999 01:18:17 -0700 (PDT) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id RAA03694; Thu, 17 Jun 1999 17:48:17 +0930 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.3/8.9.0) id RAA52060; Thu, 17 Jun 1999 17:48:24 +0930 (CST) Date: Thu, 17 Jun 1999 17:48:24 +0930 From: Greg Lehey To: Narvi Cc: "David E. Cross" , freebsd-hackers@FreeBSD.ORG Subject: Re: vinum performance Message-ID: <19990617174823.O9893@freebie.lemis.com> References: <199906170743.DAA16929@cs.rpi.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.4i In-Reply-To: ; from Narvi on Thu, Jun 17, 1999 at 11:10:08AM +0300 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-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thursday, 17 June 1999 at 11:10:08 +0300, Narvi wrote: > > On Thu, 17 Jun 1999, David E. Cross wrote: > >> I have a drive that is rated at ~16 Meg/second, and indeed it delivers on the >> order of 15+ Meg/second. If I use Vinum to create a concatinated device >> of 2 such units performance drops to 2.5 Meg/sec. This seems like a >> drastic drop in performance. Any ideas what I am doin incorrectly? > > Try changing stripe size. How big is it right now? This was a concatenated plex. 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