Date: Mon, 5 Oct 2009 17:56:00 +0800 From: Eugene Grosbein <eugen@kuzbass.ru> To: rihad <rihad@mail.ru> Cc: freebsd-net@freebsd.org Subject: Re: dummynet dropping too many packets Message-ID: <20091005095600.GA73335@svzserv.kemerovo.su> In-Reply-To: <4AC9BC5A.50902@mail.ru> References: <4AC8A76B.3050502@mail.ru> <20091005025521.GA52702@svzserv.kemerovo.su> <20091005061025.GB55845@onelab2.iet.unipi.it> <4AC9B400.9020400@mail.ru> <20091005090102.GA70430@svzserv.kemerovo.su> <4AC9BC5A.50902@mail.ru>
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On Mon, Oct 05, 2009 at 02:28:58PM +0500, rihad wrote: > Oh, I almost forgot... Right now I've googled up and am reading this > intro: http://www-rp.lip6.fr/~sf/WebSF/PapersWeb/iscc01.ps > > So turning to GRED would turn my FreeBSD router from dumb into a smart > router that knows TCP? I thought pushing bits around at a lower level, > and a sufficient queue size were enough. No, it will still deal with IP packets but more clever. > Still not sure why increasing queue size as high as I want doesn't > completely eliminate drops. The goal is to make sources of traffic to slow down, this is the only way to descrease drops - any finite queue may be overhelmed with traffic. Taildrop does not really help with this. GRED does much better. Eugene Grosbeinhelp
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