On Sun, Dec 03, 2006 at 10:47:11PM -0600, John Alberts wrote:
> I don't mean to hijack the thread here, but unification as a way to
> help his resource utilization, could someone please point me to a good
> resource for unification?
http://linux-vserver.org/Special:Search?search=unification
http://linux-vserver.org/Frequently_Asked_Questions#What_is_Unification_.28vunify.29.3F
http://oldwiki.linux-vserver.org/alpha+util-vserver
> I have searched the vserver wiki, but there doesn't really seem to be
> anything on how to setup and use unification. Also, does unification
> change the upgrade/maintenance process?
that really depends, with recent kernel versions
(see http://linux-vserver.org/Feature_Matrix) CoW
is supported for unified guests, which basically
doesn't require any additional handling, except
for a sweep through the files every now and then
to re-unify common files ...
if the guest maintenance is done from the host,
older setups will benefit without giving up any
freedom, otherwise you should know that the guest
distro handles the immutable but unlinkable files
gracefully, otherwise you'll get complaints from
the guest admin ...
HTH,
Herbert
> Thanks
> John
>
>
> On 12/3/06, Herbert Poetzl <herbert@13thfloor.at> wrote:
> >On Sun, Dec 03, 2006 at 02:16:55PM -0500, Adrien Laurent wrote:
> >> Hi,
> >>
> >> I have a project of giving away free voip servers using vserver.
> >> Each servers will be a minimal centos installation with few
> >> additionnal packages.
> >
> >you should make sure that you utilize unification
> >in this case, as it will probably be the best shared
> >resource in your setup (only config files will differ)
> >so given the server is configured well, and all guests
> >are 'idle' you can probably put 300+ there
> >
> >here some tips _for your_ setup:
> >
> > - make sure to use unification (saves disk space
> > and most important memory for mappings and caches)
> > - reduce the number of guest processes, maybe even
> > to a single process (the VoIP app) plus a fake init
> > - configure higher HZ values (1000Hz) disable
> > preemption, get apic running, configure the hard
> > cpu scheduler for timeslicing
> >
> >HTH,
> >Herbert
> >
> >> They will all have a public ip - no firewall.
> >>
> >> Considering that all the servers are idle - how many of them can a
> >> regular server (Pentium 3.0Ghz - 2go ram) handle ?
> >>
> >>
> >> Thanks,
> >>
> >>
> >> Adrien
> >>
> >>
> >>
> >>
> >>
> >> --
> >> Adrien Laurent
> >> Chief Information Officer
> >> (514) 284-2020 x 202
> >> adrien@modulis.ca
> >> www.modulis.ca
> >>
> >> Technical questions? support@modulis.ca
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Received on Mon Dec 4 05:39:23 2006