From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: Network performance - iperf Date: Mon, 29 Mar 2010 14:16:34 +0200 Message-ID: <1269864994.2164.21.camel@edumazet-laptop> References: <4BB09021.6020202@petalogix.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: LKML , John Williams , netdev@vger.kernel.org, Grant Likely , John Linn , "Steven J. Magnani" , Arnd Bergmann , akpm@linux-foundation.org To: michal.simek@petalogix.com Return-path: Received: from mail-bw0-f209.google.com ([209.85.218.209]:62781 "EHLO mail-bw0-f209.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751728Ab0C2MQk (ORCPT ); Mon, 29 Mar 2010 08:16:40 -0400 In-Reply-To: <4BB09021.6020202@petalogix.com> Sender: netdev-owner@vger.kernel.org List-ID: Le lundi 29 mars 2010 =C3=A0 13:33 +0200, Michal Simek a =C3=A9crit : > Do you have any idea howto improve TCP/UDP performance in general? > Or tests which can point me on weak places. Could you post "netstat -s" on your receiver, after fresh boot and your iperf session, for 32 MB and 256 MB ram case ?