From mboxrd@z Thu Jan 1 00:00:00 1970 From: Badalian Vyacheslav Subject: Re: Performance issue : GRE tunneling Date: Fri, 18 Jan 2008 18:08:03 +0300 Message-ID: <4790C0D3.8050202@bigtelecom.ru> References: <1200664092.22132.3.camel@vglwks010.vgl2.office.vaioni.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1251; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: netdev@vger.kernel.org, matthew.hattersley@vaioni.com To: Jeba Anandhan Return-path: Received: from mail.bigtelecom.ru ([87.255.0.61]:49653 "EHLO mail.bigtelecom.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754769AbYARPIM (ORCPT ); Fri, 18 Jan 2008 10:08:12 -0500 In-Reply-To: <1200664092.22132.3.camel@vglwks010.vgl2.office.vaioni.com> Sender: netdev-owner@vger.kernel.org List-ID: Jeba Anandhan =EF=E8=F8=E5=F2: > Hi All, > When i send the traffic outside of GRE tunnel, The speed is in 3-4Mbp= s. > When i use the tunnel for traffic, the speed get reduced huge. It is > around 100-300Kbps. What are the factors affects the performance when= we > use tunneling [ ex:GRE tunneling ]? > =20 Hello. You may try get slow place. Get pc without CPU load (console mod= e=20 and etc). Try compile gre support in kernel. Turn on OPROFILE support. Install oprofile utils. do opcontrol --vmlinux=3D/usr/src/linux/vmlinux opcontrol -s #do connect and try do traffic. opreport -l | vi - # you see that functions in kernel use cpu... opcontrol -h #to stop Maybe its help for you. Thanks! > Thanks > Jeba > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > > =20