On Tue, Jul 05, 2011 at 03:05:23PM +0200, Frederik Himpe wrote:
> Since linux-image-2.6.39-2, the Debian kernel packages have the cgroup memory
> resource controller disabled by default:
> * cgroups: Disable memory resource controller by default. Allow it
> to be enabled using kernel parameter 'cgroup_enable=memory'.
>
> Because of this, ulatencyd fails at startup with this error:
> ERROR: can't mount: /sys/fs/cgroup/memory
> aborting...
>
> Maybe the fact that ulatencyd needs to have cgroup_enable=memory kernel
> parameter should be documented in a README.Debian file, or maybe the memory
> resource controller can be maded optional in ulatencyd, so that it works out
> of
> the box.
Right, I've noticed that too. There was a discussion about
CONFIG_CGROUP_MEM_RES_CTLR some time ago (#534964) and I was waiting to see
if something moved before taking action, but the discussion seems dead right
now.
I'll make the memory controller optional as you suggested in the next
upload, and document how to re-enable it.
Thanks for reporting
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