From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752140AbaBIPT0 (ORCPT ); Sun, 9 Feb 2014 10:19:26 -0500 Received: from mail-ee0-f66.google.com ([74.125.83.66]:39207 "EHLO mail-ee0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751715AbaBIPTY (ORCPT ); Sun, 9 Feb 2014 10:19:24 -0500 X-Greylist: delayed 844 seconds by postgrey-1.27 at vger.kernel.org; Sun, 09 Feb 2014 10:19:24 EST Date: Sun, 9 Feb 2014 16:05:11 +0100 From: Daniel Exner To: Borislav Petkov Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: Poor network performance x86_64.. also with 3.13 Message-ID: <20140209160511.2f67866f@Mycroft> In-Reply-To: <20140120223752.GA3057@pd.tnic> References: <52DAD66F.7080306@dragonslave.de> <20140118195026.GA15543@pd.tnic> <52DB0439.2060905@dragonslave.de> <52DDA2CD.9040001@dragonslave.de> <20140120223752.GA3057@pd.tnic> X-Mailer: Claws Mail 3.9.3 (GTK+ 2.24.22; x86_64-frugalware-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id s19FJaNj024865 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hi all, Am Mon, 20 Jan 2014 23:37:52 +0100 schrieb Borislav Petkov : > On Mon, Jan 20, 2014 at 11:27:25PM +0100, Daniel Exner wrote: > > I just did the same procedure with Kernel Version 3.13: same poor > > rates. > > > > I think I will try to see of 3.12.6 was still ok and bisect from > > there. > > Or try something more coarse-grained like 3.11 first, then 3.12 and > then the -rcs in between. > I must apologize for suspecting the kernel for my problems. After some bisect attempts I finaly noticed the following: > cat /etc/sysctl.d/net.conf > net.ipv4.tcp_window_scaling = 1 > net.core.rmem_max = 16777216 > net.ipv4.tcp_rmem = 4096 87380 16777 > net.ipv4.tcp_wmem = 4096 1638 After removing those values I finally had sane iperf values. No idea how those got there, perhaps they made sense when I first setup the box, which is some years ago.. Anyway, thanks all for your help :) Greetings Daniel Exner -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQIcBAEBCgAGBQJS95knAAoJEPI6v6bI/QkfZYYP/37WBvygR7gLKqFTYfQA2ALE n6cOLrogoJT8Cf3q1fLqKiSzPToxSuPBTTmQtaNnhxLKTCPFHxLYPbTdtlXGTPB1 vFVJmXg8WAM/kQD/IoHrMsZsHfRWZE+RtQrUfeQ4Ava6abmniBufVe7ERMuF6ddW 02F5COtw74LJuSbxS70Cn3reog/ExoIYOYKQn6+FpoKTME4WnZtA8DJxo1r077RL mNqo3D4OMrYdPhxyRjLygtCnmXuX/yynV2czBnFkME4f1B4P/1hIzqYCxa2dBQIM Pfr+b/TtyVZA3DsE1d22f/+34EFWE/06EM5l8KwImmRHGA9Ffx77jKX4sAxN0Hhg 9ZJleeddk4NahXur5WNAV4lrkiLUgGauC0k721KwBFecFy2gYK/OUIyOm/oA3IPT WAEeGT4nCfCa1vYfoZVBn5UWOZo1eLm5qh6dmGb9FHukmwWTEplRRvYDPyJNfmRg 0j5mvn7ymFIbnmkVSnBFdfJH0I6XhhiHQ9H3cb9It9OLH5eEK1x4AW1okkAwrquQ oNYkpq54aJS/3oDokyWN/Gkvkmmk+4Q6tpxQge0AQPhrNeft5X7b8VhffstWhTSF kO1ULQ+zOtRUHF6T5523qVcS3pzFfqQKPYPhhQspGvuPJEr0M94i2JS016Z84Cz6 krmaHvSO/MKFkm7w+x5d =90En -----END PGP SIGNATURE----- {.n++%ݶw{.n+{G{ayʇڙ,jfhz_(階ݢj"mG?&~iOzv^m ?I