From owner-freebsd-hackers Thu Jun 17 12:37: 5 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from haldjas.folklore.ee (Haldjas.folklore.ee [193.40.6.121]) by hub.freebsd.org (Postfix) with ESMTP id 18C2A14FAC for ; Thu, 17 Jun 1999 12:37:01 -0700 (PDT) (envelope-from narvi@haldjas.folklore.ee) Received: from haldjas.folklore.ee (haldjas.folklore.ee [172.17.2.1] (may be forged)) by haldjas.folklore.ee (8.8.8/8.8.4) with SMTP id WAA08832; Thu, 17 Jun 1999 22:36:50 +0300 (EEST) Date: Thu, 17 Jun 1999 22:36:49 +0300 (EEST) From: Narvi To: Greg Lehey Cc: "David E. Cross" , freebsd-hackers@FreeBSD.ORG Subject: Re: vinum performance In-Reply-To: <19990617174823.O9893@freebie.lemis.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 17 Jun 1999, Greg Lehey wrote: > 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. > Do we know that for a fact? It could be concatenated by striping. And no, i am not sure he was using vinum terminology (and he didn't say plex anywhere). > Greg > -- > See complete headers for address, home page and phone numbers > finger grog@lemis.com for PGP public key > Sander There is no love, no good, no happiness and no future - all these are just illusions. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message