Messages in this thread |  | | | Subject | Re: TCP_STREAM performance regression on commit b3613118 | | From | "Alex,Shi" <> | | Date | Mon, 20 Feb 2012 09:44:13 +0800 |
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On Fri, 2012-02-17 at 13:33 -0500, David Miller wrote: > From: Eric Dumazet <eric.dumazet@gmail.com> > Date: Fri, 17 Feb 2012 10:50:39 +0100 > > > Le vendredi 17 février 2012 à 16:18 +0800, Alex,Shi a écrit : > >> The tcp_stream loop back performance has about 10% drop on the > >> commitment on our core2 2 sockets server. This commit has 2 > >> parents(7505afe28, 5983fe), but both of them have no regression. So > >> guess the impact just happened when this 2 parents joint. That beyond > >> our capability to dig it more. > >> > >> Any ideas? > > > > Most probably the more accurate truesize determination is responsible of > > this tcp regression, since some prior assumptions might be wrong. > > > > Want to give more information on the workload ? > > Is it a 32 or 64 bit kernel ?
It is 64 bit kernel. Currently we only care 64bit.
Will try to bring more statistic after our lab recovered. > > And let's start CC:'ing netdev too.
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