Date: Fri, 6 Mar 2009 08:06:50 +0100 (CET) From: "Sebastian Mellmann" <sebastian.mellmann@net.t-labs.tu-berlin.de> To: "Luigi Rizzo" <rizzo@iet.unipi.it> Cc: freebsd-ipfw@freebsd.org Subject: Re: ipfw (dummynet) adds delay, but not configured to do so Message-ID: <64393.62.206.221.107.1236323210.squirrel@anubis.getmyip.com> In-Reply-To: <20090306070011.GA94585@onelab2.iet.unipi.it> References: <49AED3B1.1060209@net.t-labs.tu-berlin.de> <20090304210017.GA29615@onelab2.iet.unipi.it> <20090306153751.D71460@sola.nimnet.asn.au> <20090306070011.GA94585@onelab2.iet.unipi.it>
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>> Secondly, apropos Sebastian's experience, should this say "The value >> (even if 0) is rounded to the next multiple of the clock tick .." ? >> ^^^^^^^^^^^ > > 0 is rounded to 0 so that's not an issue. > The delay Sebastian is seeing comes from the babdnwidth limitation, > which is causing a non-zero "transmission time" which is rounded up. Let me get this right: When I configure a pipe with bandwidth limitations, I'll always get some additional delay when a packet passes this pipe? > cheers > luigi Regards, Sebastian
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