Re: Misleading OOM messages

[Balbir Singh]

* Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx> [2009-05-15 15:26:43]:

> On Fri, 15 May 2009, Dave Hansen wrote:
> 
> > On Fri, 2009-05-15 at 13:57 -0400, Christoph Lameter wrote:
> > > > If you misconfigured cgroups, you give more memory to them.
> > >
> > > If you do not have enough memory in a cgroup then your application should
> > > slow down (because of page evictions) but the system should not OOM.
> > > Are cgroups broken or why are you getting OOMs when using them?
> >
> > See mm/oom_kill.c::mem_cgroup_out_of_memory().  A group itself can have
> > an OOM done on it.  It's not a system-wide oom.  We just need to ensure
> > that we continue to differentiate the cgroup-specific oom message from
> > the general one.  Maybe also include some more cgroup info in the debug
> > outbut.
> 
> But that is a resource control isssue. Should also not say out of memory
> but state that the cgroup memory limit was reached.
>

But we are out of memory for the cgroup under consideration. 

-- 
	Balbir
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