Date: Tue, 06 Oct 2009 11:38:52 +0500 From: rihad <rihad@mail.ru> To: Eugene Grosbein <eugen@kuzbass.ru> Cc: freebsd-net@freebsd.org, Luigi Rizzo <rizzo@iet.unipi.it> Subject: Re: dummynet dropping too many packets Message-ID: <4ACAE5FC.7040605@mail.ru> In-Reply-To: <20091006042153.GA5857@svzserv.kemerovo.su> References: <20091005095600.GA73335@svzserv.kemerovo.su> <4AC9CFF7.3090208@mail.ru> <20091005110726.GA62598@onelab2.iet.unipi.it> <4AC9D87E.7000005@mail.ru> <20091005120418.GA63131@onelab2.iet.unipi.it> <4AC9E29B.6080908@mail.ru> <20091005123230.GA64167@onelab2.iet.unipi.it> <4AC9EFDF.4080302@mail.ru> <20091005140409.GB89194@svzserv.kemerovo.su> <4ACA02F7.6040409@mail.ru> <20091006042153.GA5857@svzserv.kemerovo.su>
next in thread | previous in thread | raw e-mail | index | archive | help
Eugene Grosbein wrote: > On Mon, Oct 05, 2009 at 07:30:15PM +0500, rihad wrote: > >>>> How do I investigate and fix this burstiness issue? >>> Please also show: >>> >>> sysctl net.isr >>> sysctl net.inet.ip.intr_queue_maxlen >> net.isr.swi_count: 65461359 >> net.isr.drop: 0 >> net.isr.queued: 32843752 >> net.isr.deferred: 0 >> net.isr.directed: -723075002 >> net.isr.count: -723074001 >> net.isr.direct: 1 >> >> net.inet.ip.intr_queue_maxlen: 50 > > Try to increase net.inet.ip.intr_queue_maxlen uptio 4096. > Apparently increasing the input queue had no effect on the output drops. Besides, net.inet.ip.intr_queue_drops has only reached 70 for 6 days of uptime. I'll soon be rebooting to change HZ 1000 -> 2000, and we'll see how that goes. There must be some global limit, not nmbclusters, not per-user output queues, not the interface input queue, but something else that triggers at around 360-370 mbit/s...
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4ACAE5FC.7040605>