Date: Mon, 5 Oct 2009 19:46:36 +0800 From: Eugene Grosbein <eugen@kuzbass.ru> To: rihad <rihad@mail.ru> Cc: freebsd-net@freebsd.org, Luigi Rizzo <rizzo@iet.unipi.it> Subject: Re: dummynet dropping too many packets Message-ID: <20091005114636.GB77999@svzserv.kemerovo.su> In-Reply-To: <4AC8BF3B.10601@mail.ru> References: <4AC8A76B.3050502@mail.ru> <20091004144909.GA42503@onelab2.iet.unipi.it> <4AC8B6E3.2070101@mail.ru> <20091004151518.GB42877@onelab2.iet.unipi.it> <4AC8BF3B.10601@mail.ru>
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On Sun, Oct 04, 2009 at 08:28:59PM +0500, rihad wrote: > Thanks for the tip. although I took an easier route by simply doing > "ipfw add allow ip from any to any" before the pipe rules, and the buf > drop rate instantly became 0. So the problem is dummynet/ipfw. You should also estimate volume of non-TCP traffic that is generally has not flow control capabilities of TCP. Or, try something like this: ipfw add 100 skipto 200 tcp from any to any # direct only TCP to dummynet ipfw add 150 allow ip from any to any # pass non-TCP ipfw add 200 ... # here dummynet rules go And take a look at drop counters. Eugene Grosbein
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