From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on sa.int.altlinux.org X-Spam-Level: X-Spam-Status: No, score=-3.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW, SPF_PASS autolearn=ham version=3.2.5 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1350478366; bh=hS+GBpE1vJqhO+cqgeBjsfwlikB4bZfSyUjVOUCDNR0=; h=From:To:Subject:Date; b=vkgYqltjAx6PybDaChPGTprz37z+wf6rp9RPH4qFk6ppGjnu+JzM2sQBmI2V2dyEH 7/NeYj7ymrN5KqXiDG134LNCS7/aa4M4nfqnYzx0yJfeP4hyCJbkS01v+TWeWN2cMl xbVT5BUB95D3PtdLtwijaMtmylYgFPoZwjZHOD34= From: =?koi8-r?B?68HSwdfBxdcg8MHXxcw=?= To: ALT Linux sysadmins discussion MIME-Version: 1.0 Message-Id: <773611350478365@web27f.yandex.ru> Date: Wed, 17 Oct 2012 16:52:45 +0400 X-Mailer: Yamail [ http://yandex.ru ] 5.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=koi8-r Subject: [Sysadmins] =?koi8-r?b?c3lzbG9nZCDOwcfS1dbBxdQgxMnTyw==?= X-BeenThere: sysadmins@lists.altlinux.org X-Mailman-Version: 2.1.12 Precedence: list Reply-To: ALT Linux sysadmins' discussion List-Id: ALT Linux sysadmins' discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Oct 2012 12:52:56 -0000 Archived-At: List-Archive: Приветствую. Установил informika-6.0.0-school-server-x86_64-ru-install-dvd5.iso на свежий серв и наблюдаю следующую картину. СтОит только добавить в /etc/syslog.conf такие строки: mail.* /var/log/maillog_vir *.* /var/log/swatch.log *.* @molot.glazov.net как atop сразу показывает высокую нагрузку DSK sda и sdb. ATOP - pr 2012/10/17 16:21:23 ------ 10s elapsed PRC | sys 0.15s | user 0.15s | | #proc 189 | #trun 1 | #tslpi 565 | #tslpu 2 | #zombie 0 | clones 40 | | #exit 29 | CPU | sys 2% | user 2% | irq 1% | | idle 107% | wait 88% | | steal 0% | guest 0% | curf 2.80GHz | curscal ?% | cpu | sys 1% | user 2% | irq 1% | | idle 23% | cpu000 w 73% | | steal 0% | guest 0% | curf 2.80GHz | curscal ?% | cpu | sys 1% | user 1% | irq 0% | | idle 83% | cpu001 w 15% | | steal 0% | guest 0% | curf 2.80GHz | curscal ?% | CPL | avg1 1.36 | avg5 0.83 | | avg15 0.71 | | | csw 12289 | intr 11176 | | | numcpu 2 | MEM | tot 3.6G | free 846.4M | cache 1.9G | dirty 0.2M | buff 48.1M | | slab 192.3M | | | | | SWP | tot 4.0G | free 4.0G | | | | | | | | vmcom 3.8G | vmlim 5.8G | MDD | md2 | busy 0% | read 36 | write 1509 | KiB/r 4 | | KiB/w 4 | MBr/s 0.01 | MBw/s 0.59 | avq 0.00 | avio 0.00 ms | DSK | sda | busy 83% | read 5 | write 748 | KiB/r 7 | | KiB/w 8 | MBr/s 0.00 | MBw/s 0.59 | avq 1.06 | avio 11.0 ms | DSK | sdb | busy 79% | read 27 | write 748 | KiB/r 4 | | KiB/w 8 | MBr/s 0.01 | MBw/s 0.59 | avq 1.59 | avio 10.2 ms | NET | transport | tcpi 370 | tcpo 549 | udpi 1359 | udpo 1489 | tcpao 11 | tcppo 13 | tcprs 3 | tcpie 0 | tcpor 6 | udpip 0 | NET | network | ipi 1805 | ipo 2046 | ipfrw 0 | deliv 1803 | | | | | icmpi 45 | icmpo 4 | NET | eth0 0% | pcki 1666 | pcko 1823 | si 145 Kbps | so 580 Kbps | coll 0 | mlti 0 | erri 0 | erro 0 | drpi 0 | drpo 0 | NET | lo ---- | pcki 230 | pcko 230 | si 60 Kbps | so 60 Kbps | coll 0 | mlti 0 | erri 0 | erro 0 | drpi 0 | drpo 0 | Процесс syslogd меняет статус с постоянного "S" на постоянный "D". iotop показывает TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND 2334 be/3 root 0.00 B/s 0.00 B/s 0.00 % 96.52 % [jbd2/md2-8] 19416 be/4 syslogd 0.00 B/s 115.62 K/s 0.00 % 1.13 % syslogd -u syslogd -j /var/resolv Комментирую эти строки, перезапускаю syslogd, смотрю atop - нагрузка не более нескольких процентов, iotop показывает IO от [jbd2/md2-8] нормальные 0 - 5-10%. Пробовал по одной - по две строки из приведенных, нагрузка возрастает примерно пропорционально. [root@pr etc]# uname -a Linux pr.______.net 3.0.46-std-def-alt0.M60P.1 #1 SMP Sat Oct 13 16:21:52 UTC 2012 x86_64 GNU/Linux [root@pr etc]# hdparm -tT /dev/sda /dev/sda: Timing cached reads: 11254 MB in 2.00 seconds = 5630.35 MB/sec Timing buffered disk reads: 322 MB in 3.00 seconds = 107.25 MB/sec [root@pr etc]# hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 11074 MB in 2.00 seconds = 5539.72 MB/sec Timing buffered disk reads: 336 MB in 3.05 seconds = 110.07 MB/sec [root@pr etc]# hdparm -tT /dev/md2 /dev/md2: Timing cached reads: 11042 MB in 2.00 seconds = 5524.75 MB/sec Timing buffered disk reads: 328 MB in 3.01 seconds = 108.83 MB/sec [root@pr etc]# cat /proc/mdstat Personalities : [raid1] md1 : active raid1 sda1[0] 4193216 blocks [1/1] [U] md2 : active raid1 sdb2[1] sda2[0] 308373440 blocks [2/2] [UU] unused devices: [root@pr etc]# Система расположена на md2 (диски разных объемов, но с однаковыми таблицами разделов). Как лечить и какие танцы плясать?