Messages in this thread | | | Date | Sat, 1 May 2004 16:46:24 +0200 | From | Herbert Poetzl <> | Subject | Re: [ckrm-tech] Re: [RFC] Revised CKRM release |
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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 <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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