Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752694AbYGaMXu (ORCPT ); Thu, 31 Jul 2008 08:23:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750936AbYGaMXl (ORCPT ); Thu, 31 Jul 2008 08:23:41 -0400 Received: from fk-out-0910.google.com ([209.85.128.185]:5840 "EHLO fk-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750921AbYGaMXk (ORCPT ); Thu, 31 Jul 2008 08:23:40 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; b=X2Fi00bDy2OFVsp/QZMPeDjppkd2sd5UTMzaoKc7ysYT8PYGJ05wC54hxBhHDLoS+d 1pDSff3wtzPtscGEk6HFBe8GZzoJU4NqAyC91YhFqPye79KG3I/D0O0bIsosozFlVlwq K/wHgTgIpNIXFIJZymSloKaHkgbc4ZtqqpLjg= Date: Thu, 31 Jul 2008 16:23:36 +0400 From: Alexey Dobriyan To: Andrew Morton Cc: linux-kernel@vger.kernel.org Subject: 2.6.27-rc1-mm1: busyloop time-schedule Message-ID: <20080731122336.GA5511@martell.zuzino.mipt.ru> References: <20080731000354.24b55d5b.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080731000354.24b55d5b.akpm@linux-foundation.org> User-Agent: Mutt/1.5.16 (2007-06-09) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 847 Lines: 25 The only suspicious thing so far is 100% CPU during "time-schedule" test from LTP: [...] pth_str03 0 INFO : thread 0 exiting, depth=4, status=0, addr=0xf2b010 pth_str03 0 INFO : The sum of tree (breadth 4, depth 3) is 3570 pth_str03 1 PASS : Test passed <<>> duration=0 termination_type=exited termination_id=0 corefile=no cutime=0 cstime=3 <<>> <<>> tag=time-schedule01 stime=1217504927 cmdline=" time-schedule" [100% CPU here, reproducible] "strace -p" kicks the test to completion, and shows plenty of sched_yield() calls, IIRC. -- 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/