From mboxrd@z Thu Jan 1 00:00:00 1970 From: devzero-S0/GAf8tV78@public.gmane.org Subject: suse slab testing module "crasher" Date: Sun, 15 Jun 2008 20:31:49 +0200 Message-ID: <317948575@web.de> Mime-Version: 1.0 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: kernel-testers-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="iso-8859-1" To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Andrew Morton , Andi Kleen , kernel-testers-u79uwXL29TY76Z2rM5mHXA@public.gmane.org >Andrew Morton writes: >> >> Doing the same thing on 2.6.26-rc5-mm3, msgctl08 also runs to >> completion, in 20.9 seconds. So >> >> - it got slower > >That is because it scales itself to the number of available msg queues= =2E >So with Nadia's patch there are more and it runs slower. > >In fact it seems to start one process per message queue, so perhaps it= 's=20 >just running out of processes or something. Ok it should not segfault. > >BTW a great way to debug slab corruptions with LTP faster is to run wi= th >a slab thrasher stress module like http://firstfloor.org/~andi/crasher= -26.diff > >-Andi any reason why only suse has this, but not mainline ? i came across that module in suse kernel just some days ago and asked n= ovell ( https://bugzilla.novell.com/show_bug.cgi?id=3D396132 ) , but th= ey don`t have any objections. chris mason didn`t reply on direct request.... so, if it`s useful, who is reponsible for pushing it upstream ? ______________________________________________________________ Jeden Monat 1 hochkar=E4tiger maxdome-Blockbuster GRATIS! Exklusiv f=FCr alle WEB.DE Nutzer. http://www.blockbuster.web.de -- To unsubscribe from this list: send the line "unsubscribe kernel-tester= s" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760168AbYFOSfX (ORCPT ); Sun, 15 Jun 2008 14:35:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759213AbYFOSfL (ORCPT ); Sun, 15 Jun 2008 14:35:11 -0400 Received: from fmmailgate05.web.de ([217.72.192.243]:64463 "EHLO fmmailgate05.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759172AbYFOSfK convert rfc822-to-8bit (ORCPT ); Sun, 15 Jun 2008 14:35:10 -0400 Date: Sun, 15 Jun 2008 20:31:49 +0200 Message-Id: <317948575@web.de> MIME-Version: 1.0 From: devzero@web.de To: linux-kernel@vger.kernel.org Cc: Andrew Morton , Andi Kleen , kernel-testers@vger.kernel.org Subject: suse slab testing module "crasher" Organization: http://freemail.web.de/ X-Provags-Id: V01U2FsdGVkX1/99BVJd0ZshbD+iFeiIcjuK7YzOI0Plp/rMsnPD4QyX94+v KEcN3UFvF+0yTjD9piQAQPCc5V9wlxFOJy9WAR0Gf7vybWgpJI= Content-Type: text/plain; charset=iso-8859-15 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >Andrew Morton writes: >> >> Doing the same thing on 2.6.26-rc5-mm3, msgctl08 also runs to >> completion, in 20.9 seconds. So >> >> - it got slower > >That is because it scales itself to the number of available msg queues. >So with Nadia's patch there are more and it runs slower. > >In fact it seems to start one process per message queue, so perhaps it's >just running out of processes or something. Ok it should not segfault. > >BTW a great way to debug slab corruptions with LTP faster is to run with >a slab thrasher stress module like http://firstfloor.org/~andi/crasher-26.diff > >-Andi any reason why only suse has this, but not mainline ? i came across that module in suse kernel just some days ago and asked novell ( https://bugzilla.novell.com/show_bug.cgi?id=396132 ) , but they don`t have any objections. chris mason didn`t reply on direct request.... so, if it`s useful, who is reponsible for pushing it upstream ? ______________________________________________________________ Jeden Monat 1 hochkarätiger maxdome-Blockbuster GRATIS! Exklusiv für alle WEB.DE Nutzer. http://www.blockbuster.web.de