From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263015AbUEBM2o (ORCPT ); Sun, 2 May 2004 08:28:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263024AbUEBM2o (ORCPT ); Sun, 2 May 2004 08:28:44 -0400 Received: from sev.net.ua ([212.86.233.226]:48646 "EHLO sev.net.ua") by vger.kernel.org with ESMTP id S263015AbUEBM2k convert rfc822-to-8bit (ORCPT ); Sun, 2 May 2004 08:28:40 -0400 Subject: Re: [ckrm-tech] Re: [RFC] Revised CKRM release From: Alex Lyashkov To: Herbert Poetzl Cc: Jeff Dike , linux-kernel In-Reply-To: <20040501144624.GA26495@MAIL.13thfloor.at> 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> <20040501144624.GA26495@MAIL.13thfloor.at> Content-Type: text/plain; charset=KOI8-R Content-Transfer-Encoding: 8BIT Organization: PSoft Message-Id: <1083500909.9054.2.camel@berloga.shadowland> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.5 (1.4.5-1) Date: Sun, 02 May 2004 15:28:29 +0300 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org ÷ óÂÔ, 01.05.2004, × 17:46, Herbert Poetzl ÐÉÛÅÔ: > 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 > Try compare system with 10 vsevers with with 1000 iptables rules per vserver and routing tables who has more one then one record :) and system without vservers with same setings ( 1000 iptables rules and some roting table). Other point who been slowly in vserver large sockets lists - try use 1000 simultaneous tcp connections per vserver ..... and other... :) without iptables and 1-10 tcp connections per vserver you can`t find a speed decrease. Also fix bugs with wrong selected source address for packets who send from vserver. > > > 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 > - > 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