[Devel] Re: [PATCH v3 0/4] cgroup notifications API and memory thresholds

[Kirill A. Shutemov]

On Sat, Dec 26, 2009 at 3:30 PM, Balbir Singh <balbir at linux.vnet.ibm.com> wrote:
> * Kirill A. Shutemov <kirill at shutemov.name> [2009-12-26 02:30:56]:
>
>> This patchset introduces eventfd-based API for notifications in cgroups and
>> implements memory notifications on top of it.
>>
>> It uses statistics in memory controler to track memory usage.
>>
>> Output of time(1) on building kernel on tmpfs:
>>
>> Root cgroup before changes:
>>       make -j2  506.37 user 60.93s system 193% cpu 4:52.77 total
>> Non-root cgroup before changes:
>>       make -j2  507.14 user 62.66s system 193% cpu 4:54.74 total
>> Root cgroup after changes (0 thresholds):
>>       make -j2  507.13 user 62.20s system 193% cpu 4:53.55 total
>> Non-root cgroup after changes (0 thresholds):
>>       make -j2  507.70 user 64.20s system 193% cpu 4:55.70 total
>> Root cgroup after changes (1 thresholds, never crossed):
>>       make -j2  506.97 user 62.20s system 193% cpu 4:53.90 total
>> Non-root cgroup after changes (1 thresholds, never crossed):
>>       make -j2  507.55 user 64.08s system 193% cpu 4:55.63 total
>>
>> Any comments?
>
> Could you please add some documentation for end users.

Sure. I'll send new version of patchset with documentation soon.

> I've just
> compiled a kernel with your changes for test. Also, is there a reason
> not to use cgroupstats?

I'm not sure that understand you correctly. Could you explain the idea?
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