From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262019AbUEAOq2 (ORCPT ); Sat, 1 May 2004 10:46:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262060AbUEAOq2 (ORCPT ); Sat, 1 May 2004 10:46:28 -0400 Received: from MAIL.13thfloor.at ([212.16.62.51]:43710 "EHLO mail.13thfloor.at") by vger.kernel.org with ESMTP id S262019AbUEAOqZ (ORCPT ); Sat, 1 May 2004 10:46:25 -0400 Date: Sat, 1 May 2004 16:46:24 +0200 From: Herbert Poetzl To: Alex Lyashkov Cc: Jeff Dike , linux-kernel Subject: Re: [ckrm-tech] Re: [RFC] Revised CKRM release Message-ID: <20040501144624.GA26495@MAIL.13thfloor.at> Mail-Followup-To: Alex Lyashkov , Jeff Dike , linux-kernel References: <20040430174117.A13372@infradead.org> <4092AD60.1030809@watson.ibm.com> <200404302217.i3UMHdml004610@ccure.user-mode-linux.org> <20040430234332.GA10569@MAIL.13thfloor.at> <1083391814.8172.8.camel@berloga.shadowland> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1083391814.8172.8.camel@berloga.shadowland> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, May 01, 2004 at 09:10:15AM +0300, Alex Lyashkov wrote: > ? ???, 01.05.2004, ? 02:43, Herbert Poetzl ?????: > > On Fri, Apr 30, 2004 at 06:17:39PM -0400, Jeff Dike wrote: > > > nagar@watson.ibm.com said: > > > > Jeff, do you have any numbers for UML overhead in 2.6 ? > > > > > > It obviously depends on the workload, but for "normal" things, like kernel > > > builds and web serving, it's generally in the 20-30% range. That can be > > > reduced, since I haven't spent too much time on tuning. I'm aiming for the > > > teens, and I don't think that'll be too hard. > > > > hmm, just wanted to mention that linux-vserver has > > around 0% overhead and often allows to improve > > performance due to resource sharing ... > > > Herber please not say vserver have - 0 overhead. > it generally wrong. well, I said around 0%, but it's actually a long time since we measured that, and I'll schedule some tests next week, to see if the overhead is still not measureable with 'normal' userspace testing > But overhead less than UML is right. that is for sure, and it benefits from not having everything twice, like inode cache, dentry cache, page cache ... best, Herbert > > basically it's a soft partitioning concept based on > > 'Security Contexts' which allow to create many > > independant Virtual Private Servers (VPS), which > > act simultaneously on one box at full speed, sharing > > the available hardware resources. > > > > see http://linux-vserver.org for details ... > > > > best, > > Herbert > > > > PS: UML and Linux-VServer play together nicely ... > > > > > > > > Jeff > > > > > > ------------------------------------------------------- > > > This SF.Net email is sponsored by: Oracle 10g > > > Get certified on the hottest thing ever to hit the market... Oracle 10g. > > > Take an Oracle 10g class now, and we'll give you the exam FREE. > > > http://ads.osdn.com/?ad_id=3149&alloc_id=8166&op=click > > > _______________________________________________ > > > ckrm-tech mailing list > > > https://lists.sourceforge.net/lists/listinfo/ckrm-tech > > - > > 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/ > -- > Alex Lyashkov > PSoft