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В Сбт, 01.05.2004, в 17:46, Herbert Poetzl пишет: > 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 <shadow@psoft.net> > > 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 <shadow@psoft.net> 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/ | ||||||||||
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