From owner-freebsd-stable@FreeBSD.ORG Wed Sep 14 20:11:50 2005 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8AA2516A41F for ; Wed, 14 Sep 2005 20:11:50 +0000 (GMT) (envelope-from diodex@gmx.net) Received: from mail.gmx.net (imap.gmx.net [213.165.64.20]) by mx1.FreeBSD.org (Postfix) with SMTP id C7E0F43D49 for ; Wed, 14 Sep 2005 20:11:49 +0000 (GMT) (envelope-from diodex@gmx.net) Received: (qmail 13606 invoked by uid 0); 14 Sep 2005 20:11:48 -0000 Received: from 200.68.218.3 by www84.gmx.net with HTTP; Wed, 14 Sep 2005 22:11:47 +0200 (MEST) Date: Wed, 14 Sep 2005 22:11:47 +0200 (MEST) From: "Mariano Benedettini" To: freebsd-stable@freebsd.org MIME-Version: 1.0 X-Priority: 3 (Normal) X-Authenticated: #6939434 Message-ID: <32422.1126728707@www84.gmx.net> X-Mailer: WWW-Mail 1.6 (Global Message Exchange) X-Flags: 0001 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Subject: High load averages on a 5.3-RELEASE X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 14 Sep 2005 20:11:50 -0000 Hi people, I've also posted this message to freebsd-performance, with no answer. I have a mail server running FreeBSD 5.3-RELEASE. It's a dual Xeon with 4gb of ram. The server is running Apache (serving Horde) , Postfix, Courier imapd w/SSL, Amavisd. Also a Postgresql as Horde's storage. The mail storage is accessed via NFS (this server is the nfs client). The problem is that it's experiencing a really high load average (see the top -S and vmstat -systat ) while the CPU's are relatively idle. I think it's a IO problem (nfs?), but I cant figure out what exactly is causing this. last pid: 96776; load averages: 13.60, 13.94, 18.26 up 22+01:45:44 17:08:08 1166 processes:8 running, 1087 sleeping, 71 waiting CPU states: 12.3% user, 0.0% nice, 17.8% system, 2.1% interrupt, 67.8% idle Mem: 1637M Active, 1638M Inact, 320M Wired, 192M Cache, 112M Buf, 28M Free Swap: 2023M Total, 216K Used, 2023M Free PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU CPU COMMAND 11 root 132 0 0K 12K RUN 3 492.1H 82.13% 82.13% idle: cpu3 14 root 132 0 0K 12K RUN 0 487.0H 79.83% 79.83% idle: cpu0 12 root 132 0 0K 12K RUN 2 487.0H 78.37% 78.37% idle: cpu2 13 root 132 0 0K 12K CPU1 1 463.9H 71.63% 71.63% idle: cpu1 24 root -64 -183 0K 12K CPU0 0 154:50 2.29% 2.29% irq11: ohci0 79636 www 4 0 33532K 22264K sbwait 2 0:08 1.27% 1.27% httpd 78 root -44 -163 0K 12K WAIT 1 371:20 1.12% 1.12% swi1: net 95810 root 5 0 1844K 1432K ttyin 1 0:03 1.03% 1.03% systat 59508 root 5 0 1836K 1336K ttyin 3 5:56 0.98% 0.98% systat 79 root -28 -147 0K 12K WAIT 1 171:24 0.93% 0.93% swi5: clock sio 72854 www 96 0 34068K 22800K select 1 0:11 0.93% 0.93% httpd 90730 www 20 0 29720K 18452K lockf 0 0:02 0.93% 0.93% httpd 77968 www 4 0 36816K 25556K sbwait 2 0:09 0.88% 0.88% httpd 78081 www 20 0 31916K 20640K lockf 1 0:07 0.83% 0.83% httpd 96143 postfix 96 0 3180K 2284K select 1 0:02 0.78% 0.78% smtpd 70626 www 20 0 33264K 21992K lockf 3 0:08 0.73% 0.73% httpd 71231 root 96 0 2572K 1696K select 1 0:03 0.68% 0.68% couriertls 87567 www 4 0 33276K 22040K sbwait 3 0:04 0.63% 0.63% httpd 78109 www 20 0 34228K 22968K lockf 1 0:08 0.49% 0.49% httpd 71240 mfx 96 0 2596K 1532K select 0 0:02 0.49% 0.49% imapd 95217 vscan 20 0 20068K 18088K lockf 3 0:01 0.49% 0.49% perl 79635 www 20 0 34160K 22884K lockf 3 0:05 0.44% 0.44% httpd 75988 pgsql 4 0 20436K 14468K sbwait 2 0:02 0.44% 0.44% postgres 96754 postfix 4 0 3180K 2284K select 2 0:00 4.61% 0.44% smtpd 79861 pgsql 4 0 20436K 14332K sbwait 0 0:01 0.39% 0.39% postgres 90802 www 20 0 33272K 22032K lockf 1 0:03 0.34% 0.34% httpd 96763 postfix 4 0 3160K 2272K select 0 0:00 7.00% 0.34% smtpd 96756 postfix 4 0 3088K 2204K select 3 0:00 3.08% 0.29% smtp 85422 www 20 0 34168K 22892K lockf 3 0:04 0.24% 0.24% httpd 90750 www 4 0 33284K 22024K sbwait 1 0:02 0.24% 0.24% httpd 5 users Load 11.65 13.51 18.06 14 sep 17:08 (this is ugly, sorry): Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER Tot Share Tot Share Free in out in out Act 1624872 13936 3218536 27392 226332 count All 3864628 39728 2312968 378336 pages Interrupts Proc:r p d s w Csw Trp Sys Int Sof Flt 162 cow 1138 total 1 3 1k 5797 599 6050 1793 133 688 326888 wire 1: atkb 1673300 act 6: fdc0 6.1%Sys 2.2%Intr 8.7%User 0.0%Nice 83.0%Idl 1681452 inact 128 8: rtc | | | | | | | | | | 196908 cache 166 11: ohc ===+>>>>> 29424 free 13: npx daefr 14: ata Namei Name-cache Dir-cache 384 prcfr 18 15: ata Calls hits % hits % react 18 16: cis 27907 27560 99 pdwak 541 26: bge 252 zfod pdpgs 167 29: bge Disks da0 pass0 248 ofod intrn 30: ahc KB/t 13.57 0.00 98 %slo-z 114464 buf 31: ahc tps 18 0 645 tfree 178 dirty 100 0: clk MB/s 0.24 0.00 100000 desiredvnodes % busy 6 0 91116 numvnodes 46875 freevnodes After searching lists and documentation, I'm not sure what's causing the problem. Suggestions ? Thanks in advance, Mariano. -- Lust, ein paar Euro nebenbei zu verdienen? Ohne Kosten, ohne Risiko! Satte Provisionen für GMX Partner: http://www.gmx.net/de/go/partner