From owner-freebsd-questions@FreeBSD.ORG Wed Jun 28 15:51:30 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id BC45E16A408 for ; Wed, 28 Jun 2006 15:51:30 +0000 (UTC) (envelope-from hakmi@rogers.com) Received: from smtp102.rog.mail.re2.yahoo.com (smtp102.rog.mail.re2.yahoo.com [206.190.36.80]) by mx1.FreeBSD.org (Postfix) with SMTP id 2108C43D78 for ; Wed, 28 Jun 2006 15:51:29 +0000 (GMT) (envelope-from hakmi@rogers.com) Received: (qmail 37533 invoked from network); 28 Jun 2006 15:51:29 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=rogers.com; h=Received:From:To:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Mailer:X-MimeOLE:Thread-Index; b=A26o1A1bFBHu6jCAu+LRthYwse4XQrv+lY+GWzMXw3pt1QNqMqXI+WZG29CawZjCFGZOWN6ZXP9E42jMn0cmNj5j4ItXe50UE5dEvHtGuUC4LFsd73ON3g9MT6YhJXjRAHwWvZDLBV0anlMsM3dUpe562ZEHlpXgRsWedO+Ii+s= ; Received: from unknown (HELO tamouh) (hakmi@rogers.com@70.27.160.99 with login) by smtp102.rog.mail.re2.yahoo.com with SMTP; 28 Jun 2006 15:51:29 -0000 From: "Tamouh H." To: Date: Wed, 28 Jun 2006 11:51:35 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Office Outlook, Build 11.0.6353 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 Thread-Index: AcaayrwHg07XxitzTS2AnQsLqkRCEw== Message-Id: <20060628155129.2108C43D78@mx1.FreeBSD.org> Subject: busy disks - a lot of write activities on / part X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 Jun 2006 15:51:30 -0000 I'm diagnosing a slow hard disk issues , trying to determine where the = bottleneck in all of this. The system is FreeBSD 5.4 with SCSI U320 = drives in RAID-5 on Adaptec 2130SLP Controller. I'm noticing the / boot partition has the most activities for = writes/Busy and was wondering if anyone can shed some lights on this and = what can possibly be done to speed up the drives. doing 'gstat' shows: dT: 0.510 flag_I 500000us 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| acd0 1 141 6 259 6.6 135 1466 121.0 94.3| aacd0 0 0 0 0 0.0 0 0 0.0 0.0| aacd1 0 0 0 0 0.0 0 0 0.0 0.0| acd0t01 1 141 6 259 6.7 135 1466 121.0 94.5| aacd0s1 0 0 0 0 0.0 0 0 0.0 0.0| aacd1s1 1 61 0 0 0.0 61 549 16.6 101.2| aacd0s1a 0 0 0 0 0.0 0 0 0.0 0.0| aacd0s1b 0 0 0 0 0.0 0 0 0.0 0.0| aacd0s1c 0 73 0 0 0.0 73 906 205.1 48.6| aacd0s1d 0 4 2 4 7.9 2 12 242.6 49.1| aacd0s1e 0 4 4 255 6.1 0 0 0.0 2.4| aacd0s1f 0 0 0 0 0.0 0 0 0.0 0.0| aacd1s1c 0 0 0 0 0.0 0 0 0.0 0.0| aacd1s1d 0 0 0 0 0.0 0 0 0.0 0.0| aacd1s1e This is df: Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/aacd0s1a 809998 59430 685770 8% / devfs 1 1 0 100% /dev /dev/aacd1s1e 1722888 14892 1570166 1% /tmp /dev/aacd0s1f 209955742 62440662 130718622 32% /home /dev/aacd0s1d 35921132 6151076 26896366 19% /usr /dev/aacd0s1e 22270798 3480300 17008836 17% /var devfs 1 1 0 100% /var/named/dev procfs 4 4 0 100% /proc /dev/aacd1s1d 137099908 70149522 55982394 56% /backup Any info on matter of disks performance is much appreciated. Thx, Tamouh Hakmi