From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ed Wildgoose Date: Sat, 03 Jul 2004 13:32:17 +0000 Subject: Re: [LARTC] Re: [PATCH 2.6] update to network emulation QOS scheduler Message-Id: <40E6B561.4050200@wildgooses.com> List-Id: References: <20040701113312.43cfe6c5@dell_ss3.pdx.osdl.net> <20040702134437.5891e998@dell_ss3.pdx.osdl.net> In-Reply-To: <20040702134437.5891e998@dell_ss3.pdx.osdl.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Stephen Hemminger Cc: netdev@oss.sgi.com, lartc@mailman.ds9a.nl >Here is an enhancement to netem to do allow emulating lower speed >networks. The resolution is close, but obviously limited by the >granularity of timers and size of packets. > > Hi Stephen, This looks extremely useful. I have a need for a simulator for the Iridium Satellite phone network, this is at most 2,400 baud with perhaps 1 sec or more latency. Do you expect this scheduler to be able to do this slow? On a related note, for better accuracy I currently need a bit of stochastic variability on the latency, ie assume a 1 sec min delay, but also to vary that a little through time. Have you considered adding that as a feature? Thanks Ed W _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/