Date: Sat, 9 Oct 2010 23:42:42 +0300 From: =?utf-8?B?0JrQvtC90YzQutC+0LIg0JXQstCz0LXQvdC40Lk=?= <kes-kes@yandex.ru> To: "b. f." <bf1783@googlemail.com> Cc: bf1783@gmail.com, freebsd-questions@FreeBSD.org Subject: Re[2]: How to obtain which interrupts cause system to hang? Message-ID: <1673286593.20101009234242@yandex.ru> In-Reply-To: <AANLkTi=tFakKntTDqDwboSM%2BNhUCcq=zGy3v5og98Z0x@mail.gmail.com> References: <AANLkTi=tFakKntTDqDwboSM%2BNhUCcq=zGy3v5og98Z0x@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Здравствуйте, b.. Вы писали 9 октября 2010 г., 21:45:07: >> How to obtain what nasty happen, which process take 36-50% of CPU >> resource? bf> It partly depends upon the version of the OS that you are running, bf> your hardware, and your configuration. 2008 interrupts/sec is high, bf> but not improbably so, for kern.hz>=1000, and not beyond the bf> capabilities of today's average computer, although it may not be bf> optimal for your workloads. So it may not actually be a problem with bf> too many interrupts, but rather with some erroneous system accounting. bf> This can happen, for example, if your computer is using some of the bf> deeper power-saving C-states, but using them poorly, as for example bf> in: bf> http://lists.freebsd.org/pipermail/freebsd-current/2010-August/019383.html bf> So you may want to examine, and perhaps adjust, your choice of kernel bf> timers, kern.hz, and power-saving settings. Device polling can also bf> be a factor, if you are using it. system is one processor vpn_shadow# uname -a FreeBSD vpn_shadow.in 7.3-RELEASE-p2 FreeBSD 7.3-RELEASE-p2 #3: Mon Jul 26 01:56:03 EEST 2010 kes@in:/usr/obj/usr/src/sys/vpn amd64 kern.hz is 2000, Interrupts 1984 total is ok polling is enabled. Server runs about 6month and... and now it has interrupts: 13.5% system, 47.7% interrupt I can not imaginge what happen, in /var/log/* is silent... all is ok as usual. Network while that is happening is unstable. ping on 100Mbit link is 60ms. -- С уважением, Коньков mailto:kes-kes@yandex.ru
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?1673286593.20101009234242>