Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752306Ab0FYVIt (ORCPT ); Fri, 25 Jun 2010 17:08:49 -0400 Received: from mail-fx0-f46.google.com ([209.85.161.46]:47868 "EHLO mail-fx0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751288Ab0FYVIs (ORCPT ); Fri, 25 Jun 2010 17:08:48 -0400 Message-ID: <4C251AFF.70803@colorfullife.com> Date: Fri, 25 Jun 2010 23:09:19 +0200 From: Manfred Spraul User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.10) Gecko/20100621 Fedora/3.0.5-1.fc13 Thunderbird/3.0.5 MIME-Version: 1.0 To: Luca Tettamanti CC: Christoph Lameter , linux-kernel@vger.kernel.org, Julia Lawall , Andrew Morton , maciej.rutecki@gmail.com Subject: Re: 2.6.35-rc3 deadlocks on semaphore operations References: <20100621200118.GA4021@nb-core2.darkstar.lan> <4C223657.3030507@colorfullife.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 809 Lines: 19 On 06/24/2010 09:22 PM, Luca Tettamanti wrote: > Argh, "seems" was indeed appropriate. Manfred your patch does > alleviate the problem but something is still wrong. I noticed (I'm > developing an ajax heavy web app) that sometimes an apache worker > hangs; I can reproduce the problem with ab (apache benchmark) and a > high concurrency level (I'm testing with 100 and 10k requests, and I > get only 2-5 dropped requests). This does not happen with 2.4.34. > Any idea on how I can debug this further? > > Are there still hung httpd processes? -- Manfred -- 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/