Re: Help Resource Counters Scale better (v4)

Balbir Singh
2009-08-11T15:01:07Z

* Prarit Bhargava <prarit@redhat.com> [2009-08-11 10:54:50]:

>
>
> Balbir Singh wrote:
>> Enhancement: Remove the overhead of root based resource counter accounting
>>
>>
>>
>
> <snip>
>> Please test/review.
>>
>>
> FWIW ...
>

Thanks for the testing!

> On a 64p/32G system running 2.6.31-git2-rc5, with RESOURCE_COUNTERS off,
> "time make -j64" results in
>
> real 4m54.972s
> user 90m13.456s
> sys 50m19.711s
>
> On the same system, running 2.6.31-git2-rc5, with RESOURCE_COUNTERS on,
> plus Balbir's "Help Resource Counters Scale Better (v3)" patch, and this
^^^
you mean (v4) right?
> patch, results in
>
> real 4m18.607s
> user 84m58.943s
> sys 50m52.682s
>

Without the patch and RESOURCE_COUNTERS do you see a big overhead. I'd
assume so, I am seeing it on my 24 way box that I have access to.

--
Balbir