Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760652AbYBGORV (ORCPT ); Thu, 7 Feb 2008 09:17:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754978AbYBGORH (ORCPT ); Thu, 7 Feb 2008 09:17:07 -0500 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:60531 "EHLO amd.ucw.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754901AbYBGORG (ORCPT ); Thu, 7 Feb 2008 09:17:06 -0500 Date: Thu, 7 Feb 2008 15:17:18 +0100 From: Pavel Machek To: kernel list , e1000-devel@lists.sourceforge.net, john.ronciak@intel.com, jeffrey.t.kirsher@intel.com, jesse.brandeburg@intel.com, auke-jan.h.kok@intel.com Subject: e1000 1sec latency problem Message-ID: <20080207141718.GA2030@elf.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1409 Lines: 38 Hi! I have the famous e1000 latency problems: 64 bytes from 195.113.31.123: icmp_seq=68 ttl=56 time=351.9 ms 64 bytes from 195.113.31.123: icmp_seq=69 ttl=56 time=209.2 ms 64 bytes from 195.113.31.123: icmp_seq=70 ttl=56 time=1004.1 ms 64 bytes from 195.113.31.123: icmp_seq=71 ttl=56 time=308.9 ms 64 bytes from 195.113.31.123: icmp_seq=72 ttl=56 time=305.4 ms 64 bytes from 195.113.31.123: icmp_seq=73 ttl=56 time=9.8 ms 64 bytes from 195.113.31.123: icmp_seq=74 ttl=56 time=3.7 ms ...and they are still there in 2.6.25-git0. I had ethernet EEPROM checksum problems, which I fixed by the update, but problems are not gone. irqpoll helps. nosmp (which implies XT-PIC is being used) does not help. 16: 1925 0 IO-APIC-fasteoi ahci, yenta, uhci_hcd:usb2, eth0 Booting kernel with nosmp/ no yenta, no usb does not help. Hmm, as expected, interrupt load on ahci (find /) makes latencies go away. It should be easily reproducible on x60 with latest bios, it is 100% reproducible for me... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- 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/