From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752147AbaBIPbN (ORCPT ); Sun, 9 Feb 2014 10:31:13 -0500 Received: from mail.skyhub.de ([78.46.96.112]:34034 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751830AbaBIPbK (ORCPT ); Sun, 9 Feb 2014 10:31:10 -0500 Date: Sun, 9 Feb 2014 16:31:07 +0100 From: Borislav Petkov To: Daniel Exner Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: Poor network performance x86_64.. also with 3.13 Message-ID: <20140209153107.GA8614@pd.tnic> References: <52DAD66F.7080306@dragonslave.de> <20140118195026.GA15543@pd.tnic> <52DB0439.2060905@dragonslave.de> <52DDA2CD.9040001@dragonslave.de> <20140120223752.GA3057@pd.tnic> <20140209160511.2f67866f@Mycroft> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20140209160511.2f67866f@Mycroft> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Feb 09, 2014 at 04:05:11PM +0100, Daniel Exner wrote: > > 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.. The only question that is left to clarify now is why do those values have effect on 3.12.x and not on 3.10... -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. --