On Mon, Apr 23, 2007 at 11:52:10AM +0200, Baltasar Cevc wrote: > Hi Gislain, > > On 23.04.2007, at 09:27, ADNET Ghislain wrote: > >I run vserver to isolate webserver from the real host. From time to > >time i have a process than run wild and block everything. I cannot > >even connect (ssh) to the Host. Which would be the more efficient > >way to configure the system so that vservers cannot prevent the > >host to work even if they are at max disk/network/cpu usage. > > > > > > The host itself does only run ssh and some monitoring tool. So it > >stay idle most of the time. > > > > The goal is to allways be able to connect to the host and manage > >things from here to recover from issues. What "best practice" do > >you use with vservers to acheive this goal ? > > You'll have to configure resource limits - see the following wiki > pages for details: > - http://linux-vserver.org/Resource_Limits > - http://linux-vserver.org/Memory_Limits > > However, there's one thing I wasn't able to cure using these: when > guest and host use the same HDD, the host can become horribly slow > when a guest does serious IO (I had that problem on a machine with a > single PATA drive). This did'nt prevent a login, though, the only > thing was everything was painfully slow when the machine was 99% > waiting for IO.
enabling cfq I/O scheduler should help a lot here as it is adjusted based on the context information best, Herbert > Baltasar > > > ((( Baltasar Cevc > > > ) World wide web: > # http://www.openairkino.net/ (a project for the local youth; > German only) > # http://technik.juz-kirchheim.de/ (programming and admin projects) > # http://baltasar.cevc-topp.de/ (private homepage) > ) Phone: > +49 176 23 22 08 22 > ) > > > _______________________________________________ > Vserver mailing list > [email protected] > http://list.linux-vserver.org/mailman/listinfo/vserver _______________________________________________ Vserver mailing list [email protected] http://list.linux-vserver.org/mailman/listinfo/vserver
