From owner-freebsd-hackers Thu Jun 17 1: 4:37 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from ACC.sumy.net (ACC.sim.net.ua [62.244.20.221]) by hub.freebsd.org (Postfix) with ESMTP id DD982150F5 for ; Thu, 17 Jun 1999 01:04:20 -0700 (PDT) (envelope-from pasha@sim.net.ua) Received: from sim.net.ua (GW.sumy.net [62.244.20.220]) by ACC.sumy.net (8.9.3/8.9.3) with ESMTP id LAA23841; Thu, 17 Jun 1999 11:03:33 +0300 (EEST) Message-ID: <3768ABD4.FD515328@sim.net.ua> Date: Thu, 17 Jun 1999 11:03:32 +0300 From: Pavel Narozhniy X-Mailer: Mozilla 4.5 [en] (X11; I; FreeBSD 2.2.8-RELEASE i386) X-Accept-Language: uk, ru, en MIME-Version: 1.0 To: "David E. Cross" Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: vinum performance References: <199906170743.DAA16929@cs.rpi.edu> Content-Type: text/plain; charset=koi8-r Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG "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 to place those drives on two different SCSI controllers. -- Pavel Narozhniy nic-hdl: PN395-RIPE http://www.sumy.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message