From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753316Ab0C2Oym (ORCPT ); Mon, 29 Mar 2010 10:54:42 -0400 Received: from mail-fx0-f223.google.com ([209.85.220.223]:61668 "EHLO mail-fx0-f223.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753032Ab0C2Oyk (ORCPT ); Mon, 29 Mar 2010 10:54:40 -0400 Message-ID: <4BB0BF28.5090505@petalogix.com> Date: Mon, 29 Mar 2010 16:54:32 +0200 From: Michal Simek Reply-To: michal.simek@petalogix.com User-Agent: Thunderbird 2.0.0.22 (X11/20090625) MIME-Version: 1.0 To: Eric Dumazet CC: LKML , John Williams , netdev@vger.kernel.org, Grant Likely , John Linn , "Steven J. Magnani" , Arnd Bergmann , akpm@linux-foundation.org Subject: Re: Network performance - iperf References: <4BB09021.6020202@petalogix.com> <1269864994.2164.21.camel@edumazet-laptop> In-Reply-To: <1269864994.2164.21.camel@edumazet-laptop> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Eric Dumazet wrote: > Le lundi 29 mars 2010 à 13:33 +0200, Michal Simek a écrit : > >> 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 ? > I am not sure if is helpful but look below. Thanks, Michal ~ # ./netstat -s Ip: 0 total packets received 0 forwarded 0 incoming packets discarded 0 incoming packets delivered 0 requests sent out Icmp: 0 ICMP messages received 0 input ICMP message failed. ICMP input histogram: 0 ICMP messages sent 0 ICMP messages failed ICMP output histogram: Tcp: 0 active connections openings 0 passive connection openings 0 failed connection attempts 0 connection resets received 0 connections established 0 segments received 0 segments send out 0 segments retransmited 0 bad segments received. 0 resets sent Udp: 0 packets received 0 packets to unknown port received. 0 packet receive errors 0 packets sent RcvbufErrors: 0 SndbufErrors: 0 UdpLite: InDatagrams: 0 NoPorts: 0 InErrors: 0 OutDatagrams: 0 RcvbufErrors: 0 SndbufErrors: 0 error parsing /proc/net/snmp: Success -- Michal Simek, Ing. (M.Eng) PetaLogix - Linux Solutions for a Reconfigurable World w: www.petalogix.com p: +61-7-30090663,+42-0-721842854 f: +61-7-30090663