Date: Mon, 10 Feb 2003 18:35:43 +0100 (CET) From: Bogdan TARU <bgd@icomag.de> To: <freebsd-hackers@FreeBSD.ORG> Subject: gettings snapshots of load spikes Message-ID: <20030210182004.G45765-100000@fw.office.icom>
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Hi hackers, I am having a real weird problem with a newly installed Dell PowerEdge 2650 which acts as a web (Apache) and mail server(Procmail). The load just 'spikes' sometimes (to 40.00 or so), but immediately starts to go down. No matter what I've tried I couldn't get a snapshot of the running processes, to discover which one(s) was the one responsible for this load. I have even tried running 'top -S -t -q -u -d 1' in a 'while (1)' loop from a shell, and redirecting the output to a file. I got nothing in the processlist, just the 'last pid' value was incremented by approx. 10. One question would be: any idea of how to get a snapshot of the system in the exact moment when the load sky-rockets? The other would be if there are any known problems related to 4.7-release-p2 (and these load spikes, of course). My configuration follows: - Dell PowerEdge 2650 (2x P4 at 1.8Ghz, 1GB of Ram, raid5 controller - Perc 3/di, dual Broadcom Gigabit onboard) - Could a big partition (260GB) cause the problems above? 'cause I've got one. - FreeBSD 4.7-RELEASE-p2 On this machine I run only Apache, Procmail, Pureftp (ftp daemon idle most of the time) and NTP. The mail/ftp traffic can be easily ignored, but Apache is tuned as a larg installation (max of 2000 children, usually having only 500 running -- out of which approx. 100 have requests, and the other just idling). I don't have any cron jobs except for the ones default in FreeBSD. Thank you for your help, bogdan ---------------------------- iCom Media AG Kirchweg 36 Koln, 50858 Germany Phone: +49-(0)221-485-689-16 Fax : +49-(0)221-485-689-20 Mobile:+49-(0)173-906-46-01 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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