Date: Fri, 09 Nov 2007 15:10:47 +0300 From: Alexey Popov <lol@chistydom.ru> To: Kris Kennaway <kris@FreeBSD.org> Cc: freebsd-hackers@freebsd.org, freebsd-stable@freebsd.org Subject: Re: amrd disk performance drop after running under high load Message-ID: <47344E47.9050908@chistydom.ru> In-Reply-To: <4723BF87.20302@FreeBSD.org> References: <47137D36.1020305@chistydom.ru> <47140906.2020107@FreeBSD.org> <47146FB4.6040306@chistydom.ru> <47147E49.9020301@FreeBSD.org> <47149E6E.9000500@chistydom.ru> <4715035D.2090802@FreeBSD.org> <4715C297.1020905@chistydom.ru> <4715C5D7.7060806@FreeBSD.org> <471EE4D9.5080307@chistydom.ru> <4723BF87.20302@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi. Kris Kennaway wrote:te: > In the "good" case you are getting a much higher interrupt rate but with > the data you provided I can't tell where from. You need to run vmstat > -i at regular intervals (e.g. every 10 seconds for a minute) during the > "good" and "bad" times, since it only provides counters and an average > rate over the uptime of the system. Now I'm running 10-process lighttpd and the problem became no so big. I collected interrupt stats and it shows no relation beetween ionterrupts and slowdowns. Here is it: http://83.167.98.162/gprof/intr-graph/ Also I have similiar statistics on mutex profiling and it shows there's no problem in mutexes. http://83.167.98.162/gprof/mtx-graph/mtxgifnew/ I have no idea what else to check. With best regards, Alexey Popov _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?47344E47.9050908>