From owner-freebsd-geom@FreeBSD.ORG Wed Mar 2 15:16:26 2005 Return-Path: Delivered-To: freebsd-geom@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 67C2916A4CE; Wed, 2 Mar 2005 15:16:26 +0000 (GMT) Received: from hermes.hw.ru (hermes.hw.ru [80.68.240.91]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6C28443D39; Wed, 2 Mar 2005 15:16:21 +0000 (GMT) (envelope-from myself@rojer.pp.ru) Received: from [80.68.243.98] (account rojer@rbc.ru HELO [80.68.243.98]) by hermes.hw.ru (CommuniGate Pro SMTP 4.1.8) with ESMTP-TLS id 73295537; Wed, 02 Mar 2005 18:16:18 +0300 Message-ID: <4225D8C1.1000804@rojer.pp.ru> Date: Wed, 02 Mar 2005 18:16:17 +0300 From: Deomid Ryabkov User-Agent: Mozilla Thunderbird 1.0 (Windows/20041206) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Lukas Ertl References: <4225CF92.80800@rojer.pp.ru> <20050302153930.D19615@pcle2.cc.univie.ac.at> In-Reply-To: <20050302153930.D19615@pcle2.cc.univie.ac.at> Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms070202050201040201030009" cc: freebsd-geom@FreeBSD.org Subject: Re: gvinum mirror seems to use only one disk for reading X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Mar 2005 15:16:26 -0000 This is a cryptographically signed message in MIME format. --------------ms070202050201040201030009 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit >> writes go to both drives as they should and tps numbers are the same, >> as expected, but "time spent processing requests" is different for >> da0 and da1. > > > I've no idea yet, why that happens. Have you checked out gstat(8) and > how the numbers compare there? > about same: da0 getting about twice the load when writing. sample snapshot of gstat with dd if=/dev/zero of=/usr/test in background: dT: 2.009 flag_I 2000000us sizeof 240 i -1 L(q) ops/s r/s kBps ms/r w/s kBps ms/w %busy Name 0 0 0 0 0.0 0 0 0.0 0.0| fd0 0 85 0 0 0.0 85 10550 3.7 31.2| da0 0 84 0 0 0.0 84 10486 2.1 17.4| da1 0 85 0 0 0.0 85 10550 3.8 31.5| da0s1 0 84 0 0 0.0 84 10486 2.1 17.7| da1s1 (forgot to mention: the system is RELENG_5 as of 28th Feb). btw, there's also a single weird line in my gstat output: 4294967293 185 185 522 0.5 0 0 0.0 105.2| gvinum/plex/usr.p1 percentage often exceeds 100 and that large value for L(q) seems like (uunit32_t) -1 to me. other values look correct and correspond to those shown for other components of the setup. -- Deomid Ryabkov aka Rojer myself@rojer.pp.ru rojer@sysadmins.ru ICQ: 8025844 --------------ms070202050201040201030009 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; 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