[Lxc-users] Server capacity planing and real world usage.

[Serge Hallyn]

Quoting Toens Bueker (toens.bueker at lists0903.nurfuerspam.neuroserve.de):
> Leon Waldman <le.waldman at gmail.com> wrote:
> 
> > Hi all, first post on the list :)
> 
> Welcome.
> 
> > Assuming a hardened Guest image (SELinux or Apparmor + The NSA 
> > Guidelines + no shell access on the guests), A LXC Host would be 
> > suitable to use as containment and resources control system for web 
> > hosting of several clients (I mean... Several 1000+)?
> 
> I'm not sure, but I don't think so. I would use OpenVZ or Virtuozzo instead.
> 
> > Assuming a Duo-Quad core intel machine, with 32 Gigs of RAM, how many 
> > containers I could squeeze on it? (Like... without any service running, 
> > what would be the memory and cpu overhead?)
> 
> I don't know that many resources regarding this information. I saved a
> pdf from an "Intel Cloud Builder Series" webcast in 2010, that
> featured Parallels Virtuozzo. It says they deployed 120 virtual
> environments on a single 16 GB RAM host. All 120 virtual environments
> ran the DVD-Store LAMP Stack (I don't know, whether this is this
> DVD-Store (http://linux.dell.com/dvdstore/)) and the latency grew
> unbearable at around 120 VEs.
> 
> You should look into OpenVZ/Virtuozzo, if you want to start know.
> Otherwise you'll have to wait until all the new stuff (e. g. Criu
> (criu.org)) have found their way into the main kernel.

If you need to checkpoint or migrate containers, then yes.

-serge