From owner-freebsd-performance@FreeBSD.ORG Wed Mar 21 12:58:26 2007 Return-Path: X-Original-To: freebsd-performance@freebsd.org Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 441D916A408 for ; Wed, 21 Mar 2007 12:58:26 +0000 (UTC) (envelope-from roma.a.g@gmail.com) Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.170]) by mx1.freebsd.org (Postfix) with ESMTP id 77FCC13C458 for ; Wed, 21 Mar 2007 12:58:25 +0000 (UTC) (envelope-from roma.a.g@gmail.com) Received: by ug-out-1314.google.com with SMTP id 71so295719ugh for ; Wed, 21 Mar 2007 05:58:24 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:date:from:x-mailer:reply-to:x-priority:message-id:to:subject:mime-version:content-type:content-transfer-encoding; b=r8NwFMOzzYbed/OS53vXTo5LlOzHJ7wFNXD6x6ClFgWp1Ho1JVp3VMriurFBxDxjWfrIHKE+GorQ+43JvDL7QUMvGTNpkBQ7eecJpQ8ZkvzAjJgrlSLtedRxHna+S9W+7NGCfcFF64kEsfpojQcusO9I8g2kgWEWGDdo1Zb2oqI= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:date:from:x-mailer:reply-to:x-priority:message-id:to:subject:mime-version:content-type:content-transfer-encoding; b=nUWcQ50NL7NCRSD+83G6px7PGAgLANdcohOgIaR6q7BpkG0n7PkwHcUjt8lT+Q2khIhpTEQAuto5Ac0sfNcH3756BV6OBM8+XJAt5qwFD4tuKq+F1U9pjLHY6pkgQvUB+4v3LUPfPuyIqWUsRVghuKA7FrxYDXfXLg/ULa/Fd6c= Received: by 10.66.232.9 with SMTP id e9mr3048327ugh.1174480455367; Wed, 21 Mar 2007 05:34:15 -0700 (PDT) Received: from ?10.200.0.64? ( [81.211.90.3]) by mx.google.com with ESMTP id 53sm1808286ugn.2007.03.21.05.34.13; Wed, 21 Mar 2007 05:34:14 -0700 (PDT) Date: Wed, 21 Mar 2007 15:34:12 +0300 From: "Roman Gorohov. " X-Mailer: The Bat! (v3.62.14) Professional X-Priority: 3 (Normal) Message-ID: <1036039198.20070321153412@gmail.com> To: freebsd-performance@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: Slow on heavy I/O operations. X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: "roma.a.g" List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Mar 2007 12:58:26 -0000 Hello list. There is a server with FreeBSD FreeBSD 4.11-STABLE(can't upgrade fornow) on HP ProLiant DL140. Disk system: at scbus0 target 0 lun0(pass0,da0) on a ASC-29320A. If I do: [idle@hst ~]#dd if=/dev/zero of=bigfile bs=64k count=5000 5000+0 records in 5000+0 records out 327680000 bytes transferred in 37.515699 secs (8734477 bytes/sec) All is hung while dd working. Its look like that: [idle@hst ~]#systat -v skip... Disks da0 pass0 pass1 md0 KB/t 20.33 0.00 0.00 0.00 tps 812 0 0 0 MB/s 16.11 0.00 0.00 0.00 % busy 100 0 0 0 skip... [idle@hst ~]#vmstat -w 5 procs memory page disks faults cpu r b w avm fre flt re pi po fr sr da0 md0 in sy cs us sy id 1 0 0 1996756 54208 42 23 25 7 39 336 0 0 531 638 404 21 5 74 1 6 0 2011488 13272 571 0 0 1 2506 8 129 0 1356 2125 159 3 4 93 4 27 0 2022852 4228 267 0 0 1 1657 4 272 0 1450 784 96 1 3 96 1 10 0 2027492 40220 449 5 0 12 3257 9384 574 0 1773 4366 189 8 7 85 1 10 0 2035064 25604 746 2 1 7 2965 4466 157 0 1380 4486 184 8 7 85 0 11 0 2030860 4228 515 2 1 3 2098 31 214 0 1412 3077 149 16 5 79 3 14 0 2042792 10004 1014 4 1 5 2787 4432 267 0 1440 1735 118 2 4 94 2 16 0 2062664 4228 301 0 1 2 2843 27 564 0 1759 1250 107 5 4 91 [idle@hst ~]#iostat -w 5 tty da0 pass0 pass1 cpu tin tout KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s us ni sy in id 0 25 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 21 0 4 0 74 1 109 62.56 242 14.81 0.00 0 0.00 0.00 0 0.00 7 0 9 0 83 0 101 18.29 433 7.73 0.00 0 0.00 0.00 0 0.00 2 0 2 0 95 0 76 26.45 281 7.25 0.00 0 0.00 0.00 0 0.00 3 0 4 0 93 0 94 15.99 357 5.57 0.00 0 0.00 0.00 0 0.00 2 0 2 0 96 0 15 16.04 667 10.45 0.00 0 0.00 0.00 0 0.00 0 0 3 1 96 0 93 15.99 558 8.71 0.00 0 0.00 0.00 0 0.00 0 0 2 1 97 0 80 16.16 252 3.98 0.00 0 0.00 0.00 0 0.00 0 0 1 0 98 0 117 23.44 240 5.49 0.00 0 0.00 0.00 0 0.00 9 0 6 0 85 Why this happen? What should I do? And one more question - how do I find process that doing heavy IO operations? For now I suspecting zope that run on the server. Thanks in advance. Roman.