From mboxrd@z Thu Jan 1 00:00:00 1970 From: alekcejk@googlemail.com Subject: Re: Re: Re: Re: limited network bandwidth with 3.2.x kernels Date: Tue, 14 Feb 2012 16:09:59 +0200 Message-ID: <2181120.DTPSTq3Adr@localhost.localdomain> References: <8633039.fHPLx6GNq3@localhost.localdomain> <2578783.aLeNzacy8Q@localhost.localdomain> <1329198902.24837.11.camel@edumazet-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE To: netdev@vger.kernel.org Return-path: Received: from mail-bk0-f46.google.com ([209.85.214.46]:63898 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755616Ab2BNOKU convert rfc822-to-8bit (ORCPT ); Tue, 14 Feb 2012 09:10:20 -0500 Received: by bkcjm19 with SMTP id jm19so5480022bkc.19 for ; Tue, 14 Feb 2012 06:10:19 -0800 (PST) In-Reply-To: <1329198902.24837.11.camel@edumazet-laptop> Sender: netdev-owner@vger.kernel.org List-ID: > Le mardi 14 f=C3=A9vrier 2012 =C3=A0 01:49 +0200, alekcejk@googlemail= =2Ecom a >=20 > =C3=A9crit : > > =D0=92 =D1=81=D0=BE=D0=BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D0=B8 =D0=BE= =D1=82 =D0=9F=D0=BE=D0=BD=D0=B5=D0=B4=D0=B5=D0=BB=D1=8C=D0=BD=D0=B8=D0=BA= 13 =D1=84=D0=B5=D0=B2=D1=80=D0=B0=D0=BB=D1=8F 2012 23:44:16 =D0=B2=D1=8B= =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=BB=D0=B8: > > > Le lundi 13 f=C3=A9vrier 2012 =C3=A0 21:18 +0100, Eric Dumazet a = =C3=A9crit : > > > I wonder if the other side of your link believes link is in half = duplex > > > mode... Could you please check ? > >=20 > > I have no access to other side, the only I can check is ethtool and= mii-diag (kernel-3.2.3): > I have seen numerous duplex mismatches in some data centers after a > reboot. One side believes link is full duplex, the other side believe= s > its half duplex. >=20 Was no such problems here. > You could setup a pktgen/hping3 to send 2.000 small frames per second= to > your gateway and check if you still can download at normal speeds. >=20 > hping3 --udp -s 9 -p 9 -i u500 192.168.1.1 Download speed not changed when running this command for my gw.