Subject: Re: [vserver] Treament of Cgroup filesystems by util-vserver
From: Ghislain <gadnet@aqueos.com>
Date: Wed, 10 Mar 2010 17:26:46 +0100
Wed, 10 Mar 2010 17:26:46 +0100
Le 10/03/2010 16:52, Walter Stanish a écrit :
>> What problems does it actually fix? What use-cases does it let us
>> support?
>>     
> Say I have 10 vServers, 5 with 512MB ram, and 6 with 2048MB ram.
>
> If I want to dedicate 1 of each set to a certain processor core
> (eg: if they are all identical servers, but one is a 'master' or
> specialist instance with extra resource requirements and should
> not be impacted by adding additional server), then I may wish
> to allocate dedicated CPU cores for those two (ie: one vServer
> within each set of five).
>   


can you provide an exemple where it works with several dir mounted and
where it does not in the actual way to use it  so we can better
understand ? the specific exemple you give seems to be handled by
cpusets easely no ?

you mean put each vserver in different cgroups depending on the
ressources an not in a global cgroup (ie one cgroup for the guest would
change to be one cgroup per guest per ressources) ?

i start to see how you see that , this allow to have different tree of
cgroup dependancy based on the ressources instead of the same  tree of
cgroup dependancy for all the ressources. (by default we have quite a
flat tree where you have only root/guest but the tools allow for custom
cgroup usage that could be created by other means meaning like  
root/webserver/guest1  and root/mailservers/guest4 etc ?).


-- 

Cordialement,
Ghislain




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