From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Lezcano Subject: Re: network namespace ipv6 perfs Date: Mon, 03 Mar 2008 21:01:18 +0100 Message-ID: <47CC590E.5070907@fr.ibm.com> References: <47CC0920.6000005@fr.ibm.com> <47CC53C9.1000400@hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <47CC53C9.1000400@hp.com> Sender: netdev-owner@vger.kernel.org To: Rick Jones Cc: Linux Containers , Linux Netdev List , Benjamin Thery List-Id: containers.vger.kernel.org Rick Jones wrote: > Daniel Lezcano wrote: >> Hi, >> >> Some performance tests was made by Benjamin to watch out the impact of >> the network namespace. The good news is there is no impact when used >> with or without namespaces. That has been checked using a real network >> device inside a network namespace. > > The *_RR tests seem to show a drop in througput and corresponding > increases in service demand - could that be because things like TSO et > al cannot mask much of anything in the way of a path-length increase? Hmm. In fact Benjamin took the 2.6.23.16 kernel where there were no network namespace code at all. So these differences between 2.6.23.16 and 2.6.25-rc1 does not show a performance degradation especially related to the network namespaces. The important point is the 2.6.25-rc1 without ipv6 netns and 2.6.25-rc1 with ipv6 netns code applied, I mean the second and the third line and we can point that the ipv6 netns code does not degrade performances for either throughput and service demand. > From the annotations, I'm ass-u-me-ing that NS was only used on the > netperf side and not both netperf and netserver side? right :) > happy benchmarking, Thanks Rick. -- Daniel