From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933127AbXDIOha (ORCPT ); Mon, 9 Apr 2007 10:37:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933275AbXDIOha (ORCPT ); Mon, 9 Apr 2007 10:37:30 -0400 Received: from ebiederm.dsl.xmission.com ([166.70.28.69]:40682 "EHLO ebiederm.dsl.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933127AbXDIOh3 (ORCPT ); Mon, 9 Apr 2007 10:37:29 -0400 From: ebiederm@xmission.com (Eric W. Biederman) To: Robin Holt Cc: Oleg Nesterov , Andrew Morton , Davide Libenzi , Ingo Molnar , Linus Torvalds , Roland McGrath , linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Subject: Re: [RFC, PATCH 1/3] introduce SYS_CLONE_MASK References: <20070408155337.GA126@tv-sign.ru> <20070408165750.GA149@tv-sign.ru> <20070409090643.GA121@tv-sign.ru> <20070409104302.GA14764@lnx-holt.americas.sgi.com> Date: Mon, 09 Apr 2007 08:36:21 -0600 In-Reply-To: <20070409104302.GA14764@lnx-holt.americas.sgi.com> (Robin Holt's message of "Mon, 9 Apr 2007 05:43:02 -0500") Message-ID: User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Robin Holt writes: > I would say this is more a benefit than a problem. With a couple of these > systems we are testing, the number of kernel threads is far greater than > the number of user processes and having pstree not normally show them, but > maybe have an option we add later to show them again would be beneficial. Sure. Robin how many kernel thread per cpu are you seeing? I don't know that we have a problem in this regard but it feels like you are seeing a lot more kernel threads per cpu than I would expect from looking at small systems. I am wondering if somewhere we are using per cpu kernel threads when we should not be... Eric