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Date: Wed, 25 Mar 2009 11:29:25 +0300
From: Oleg Bulyzhin <oleg@FreeBSD.org>
To: Eugene L Kovalenja <qwe@qwe.net.ua>
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Cc: freebsd-ipfw@FreeBSD.ORG
Subject: Re: FreeBSD 7.0: dummynet 99% cpu
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On Fri, Mar 20, 2009 at 05:42:33AM +0200, Eugene L Kovalenja wrote:
> Oliver Fromme ?????:
> > Eugene L Kovalenja wrote:
> >  > FreeBSD *** 7.0-RELEASE FreeBSD 7.0-RELEASE #6: Sun Nov 23 14:32:31 EET
> >  > [...]
> >  > Time in three days traffic via ipfw doesn't go. In top:
> >  >    21 root         1 -44    -     0K     8K WAIT   7   2:15  99.02% dummynet
> >  > (this is example, not copy\paste)
> >
> > There are a few problems that have been fixed (or worked
> > around) after the release of 7.0.  For example, look at
> > PR kern/113548 which has a work-around in 7.1.  Your
> > problem description sounds like it could be caused by
> > the same problem.
> >
> > Therefore I recommend you update to 7.1 or 7-stable.
> >
> > Best regards
> >    Oliver
> >
> >   
> Hello.
> 
> System updated to:
> [root@taurus /usr/home/qwe]# uname -a
> FreeBSD *** 7.1-RELEASE-p3 FreeBSD 7.1-RELEASE-p3 #0: Thu Mar 19 
> 16:31:53 EET 2009 root@***:/usr/obj/usr/src/sys/QWEKRN70 i386
> 
> but once trouble has repeated (30 mins ago).
> 
> 
> After that I change my sysctl variables:
> net.inet.ip.dummynet.io_fast=1
> net.inet.ip.dummynet.debug=1
> net.inet.ip.dummynet.hash_size=16384 (from 512)
> 
> What can I'll to do?
> 
> Sorry for my bad English :(
> _______________________________________________
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> To unsubscribe, send any mail to "freebsd-ipfw-unsubscribe@freebsd.org"

Please do the following (when dummynet will hang next time):
1) Grab the output of follwing commands:
sysctl net.inet.ip.dummynet
ipfw pipe show
2) wait a bit (30 seconds should be enough)
3) do 1) once again.

Examining counters may help in understanding problem.

-- 
Oleg.

================================================================
=== Oleg Bulyzhin -- OBUL-RIPN -- OBUL-RIPE -- oleg@rinet.ru ===
================================================================