[Devel] Re: Write Error: No space left on device

[Mukesh G]

Hi
 Thanks for the help... I got cpu, memory cgroups at least mounted... I got
a basic task (my shell) assigned to cpu cgroup, memory cgroup

mount -t cgroup -o cpu none /container/cpu
mount -t cgroup -o memory none /container/memory
mount -t cgroup -o cpuset none /container/cpuset

Each of the sub-directories have files that can be modified for a designated
purpose....

The questions that I am now trying to resolve

a)Definition of cpu.shares?
   the default value is 1024. What is the max? What is the relation b/w cpu
cores, freq of the cores etc...? What is 1 cpu share worth?
b) What is the relation between cpuset.cpu* values and cpu cgroup?
c) What is the relation between cpuset.mem* values and memory cgroup?

Thanks in advance

Mukesh

On Tue, Sep 16, 2008 at 5:56 AM, Paul Menage <menage at google.com> wrote:

> Hi Mukesh,
>
> You should either:
>
> - mount with just the cgroup subsystems that you care about (e.g.
> "-ocpu,memory")
>
> - set the "cpuset.cpus" and "cpuset.mems" files in the child cgroup to
> be equal to those of the parent (root) cgroup.
>
> Paul
>
> On Mon, Sep 15, 2008 at 4:55 AM, Mukesh G <mukgbv at gmail.com> wrote:
> > Hi Paul,
> >     How do I determine the no of memory nodes in shared systems (E.g: x86
> > based systems)? How do you define a memory node in the context of the
> shared
> > systems?
> >
> > I figured that I need to increase the memory nodes but unable to do so...
> >
> > Thanks
> >
> > Mukesh
> >
> >
> > On Fri, Sep 5, 2008 at 6:30 PM, Paul Jackson <pj at sgi.com> wrote:
> >
> >> Mukesh wrote:
> >> > "Write Error: No space left on device".
> >>
> >> Search for
> >>
> >>     ENOSPC
> >>
> >> on the (brand new) cpuset(7) man page, such as at:
> >>
> >>     ftp://oss.sgi.com/projects/cpusets/download/cpuset.7
> >>
> >> --
> >>                  I won't rest till it's the best ...
> >>                  Programmer, Linux Scalability
> >>                  Paul Jackson <pj at sgi.com> 1.940.382.4214
> >>
> > _______________________________________________
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> >
>
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