From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ed Wildgoose Subject: Re: Re: [PATCH 2.6] update to network emulation QOS scheduler Date: Sat, 03 Jul 2004 14:32:17 +0100 Sender: lartc-admin@mailman.ds9a.nl Message-ID: <40E6B561.4050200@wildgooses.com> References: <20040701113312.43cfe6c5@dell_ss3.pdx.osdl.net> <20040702134437.5891e998@dell_ss3.pdx.osdl.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@oss.sgi.com, lartc@mailman.ds9a.nl Return-path: To: Stephen Hemminger In-Reply-To: <20040702134437.5891e998@dell_ss3.pdx.osdl.net> Errors-To: lartc-admin@mailman.ds9a.nl List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: List-Id: netdev.vger.kernel.org >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/