Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751462AbWACQmI (ORCPT ); Tue, 3 Jan 2006 11:42:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751460AbWACQmI (ORCPT ); Tue, 3 Jan 2006 11:42:08 -0500 Received: from 80-28-34-54.adsl.nuria.telefonica-data.net ([80.28.34.54]:17043 "EHLO workstation.zul") by vger.kernel.org with ESMTP id S1751456AbWACQmH (ORCPT ); Tue, 3 Jan 2006 11:42:07 -0500 Date: Tue, 3 Jan 2006 17:43:09 +0100 (CET) From: Ian Blanes X-X-Sender: root@workstation.zul To: linux-kernel@vger.kernel.org Subject: high system load on tcp_poll and tcp_sock in 2.6 caused by squid Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1904 Lines: 45 Hi, I'm getting this report from oprofile from a squid server with about 2000 clients. I'm not sure if this is normal... any idea on where to look? thanks ian Cpu0 : 20.0% us, 43.3% sy, 0.0% ni, 20.1% id, 15.8% wa, 0.9% hi, 0.0% si SElinux compiled but dissabled. Tested on smp kernel and on single processor kernel. P4 2.40GHz, HT dissabled, e1000 network card, using multiple(4) ip address on the same card. (other event types gave similar results) CPU: CPU with timer interrupt, speed 0 MHz (estimated) Profiling through timer interrupt samples % app name symbol name 87849 28.0555 vmlinux default_idle 70392 22.4804 vmlinux tcp_poll 36378 11.6177 vmlinux sock_poll 24749 7.9038 squid clientReadRequest 14889 4.7550 vmlinux fget 6408 2.0465 vmlinux fput 5841 1.8654 squid _db_init 3996 1.2762 vmlinux remove_wait_queue 3757 1.1998 squid httpHeaderEntryCreate 2953 0.9431 squid ctx_print 2268 0.7243 squid comm_poll 2106 0.6726 e1000 (no symbols) 2077 0.6633 vmlinux add_wait_queue 1648 0.5263 vmlinux handle_IRQ_event 1625 0.5190 vmlinux do_pollfd 1500 0.4790 libc-2.3.4.so memcpy 1309 0.4180 squid _db_print 1074 0.3430 squid mime_get_auth 1039 0.3318 squid peerAllowedToUse [...] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/