From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751717AbXDMRkg (ORCPT ); Fri, 13 Apr 2007 13:40:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752365AbXDMRkg (ORCPT ); Fri, 13 Apr 2007 13:40:36 -0400 Received: from gw1.cosmosbay.com ([86.65.150.130]:48532 "EHLO gw1.cosmosbay.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751717AbXDMRkg (ORCPT ); Fri, 13 Apr 2007 13:40:36 -0400 Message-ID: <461FC07C.1010600@cosmosbay.com> Date: Fri, 13 Apr 2007 19:40:12 +0200 From: Eric Dumazet User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) MIME-Version: 1.0 To: Witold Krecicki CC: linux-kernel@vger.kernel.org Subject: Re: Oddness with reading /proc/net/tcp References: <200704131846.16358.wpk@dst-labs.com> In-Reply-To: <200704131846.16358.wpk@dst-labs.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.6 (gw1.cosmosbay.com [86.65.150.130]); Fri, 13 Apr 2007 19:40:16 +0200 (CEST) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Witold Krecicki a écrit : > Reading data from /proc/net/tcp is slower with progress of reading data, > tested on system with >200k active connections. > Yes, this is a known problem. This is O(N^2) algo. Use ss from iproute package to get better performance... (less than 15 seconds for 200k active connections)