From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 29 Jan 2001 15:40:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 29 Jan 2001 15:40:36 -0500 Received: from colorfullife.com ([216.156.138.34]:44812 "EHLO colorfullife.com") by vger.kernel.org with ESMTP id ; Mon, 29 Jan 2001 15:40:22 -0500 Message-ID: <3A75D533.7F3F4019@colorfullife.com> Date: Mon, 29 Jan 2001 21:40:19 +0100 From: Manfred Spraul X-Mailer: Mozilla 4.75 [en] (X11; U; Linux 2.2.16-22 i586) X-Accept-Language: en MIME-Version: 1.0 To: "Maciej W. Rozycki" CC: Ingo Molnar , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: [patch] 2.4.0, 2.4.0-ac12: APIC lock-ups In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org "Maciej W. Rozycki" wrote: > > I'll implement an 82489DX update in a few days, but for now I'd like > everyone interested to test the following patch as much as possible. It > applies to 2.4.0, 2.4.0-ac12 and 2.4.1-pre11 cleanly. > I'm not totally convinced that this fixes all problems: No lockup, and but a slightly increased packet loss: every few minutes a block of 5-10 packets is lost. Cpu load is low (~30%), I'm running 3 concurrent bw_tcp, the io apic computer is the 'server'. IIRC my original patch caused a far higher packet loss, perhaps because it's slower? (you wrote something about 2 r/w accesses). Are you sure that this really fixed the bug? Remember that switching the 'trigger mode' bit will revive the io apic. It's possible that * the io apic still locks up. * but now {en,dis}able_irq() switches the 'trigger mode' bit, and thus resets the io apic after a few msec --> a few lost packets. It's far better than before, but I assume the bug is hidden, not fixed. I'll make additional tests. Send the patch to Linus - it makes ne2k cards usable with 2.4+io apic. -- Manfred - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/