On Thu, May 20, 2010 at 03:03:19PM +0100, --[ UxBoD ]-- wrote: > ----- Original Message ----- > > On Thu, May 20, 2010 at 02:01:04PM +0100, --[ UxBoD ]-- wrote: > > > Hello all, > > > Slowly getting to grips with VServer though have a question over > > > resource sharing. We have a server with 8 CPUs and 32GB RAM; and 20 > > > contexts running. The nature of each context is a virtual desktop > > > and recently have experienced a problem where one context has > > > consumed a > > > high amount of CPU and memory. > > > I have read the documentation on context rlimits though am a little > > > confused on how best to set the fill and interval rates. My aim is > > > not to impede our desktops, and allow bursting when required, but I > > > wish to stop runaway processes from bringing down the other > > > contexts. > > > The initial thoughts are that we should set each context to > > > sched_prio > > > and for the limits use: > > > fill-rate : 3 > > > interval : 10 > > > max-tokens : 5000 > > > min-tokens : 1000 > > > How do you these values sound ? > > sound good to me, what kernel/patch do you use? > > > I see how the values are updated in /proc/virtual/<CTX>/sched though > > > is there any easy way to keep a running track of how many tokens are > > > being consumed by each context ? > > not really, although the number of tokens currently > > in the bucket is shown too, so it is possible to > > calculate that (to some extend) > > HTH, > > Herbert > > > Looking forward to any responses. > > > -- Thanks, Phil > Hello Herbert, > Thank you for your response. I am running 2.6.28.7-vs2.3.0.36.7 though > plan to update too a 2.6.32 kernel in the near future. in this case you should look into cgroups, as newer kernels do not use the token bucket scheduler anymore. http://linux-vserver.org/util-vserver:Cgroups > Looking at the vsched command it also has options for: > --fill-rate2 <fill-rate2> --interval2 <interval2> > how are these used as I was unable to find an example ? this is used for idle time (i.e. when all guests become idle, the values fill-rate/fill-rate2 and interval/interval2 are swapped and different shares apply while time is artificially advance to a point where at least one guest is able to run again best, Herbert -- if you or your company use and like the Linux-VServer project, why not consider donating hardware or money, or getting a service contract with the developers to ensure that it will live on and continue to provide high quality free software? > -- > Thanks, Phil