Re: [PATCH v6 00/29] kmem controller for memcg.

Glauber Costa
2012-11-02T07:41:28Z

On 11/02/2012 04:04 AM, Andrew Morton wrote:
> On Thu, 1 Nov 2012 16:07:16 +0400
> Glauber Costa <glommer@parallels.com> wrote:
>
>> Hi,
>>
>> This work introduces the kernel memory controller for memcg. Unlike previous
>> submissions, this includes the whole controller, comprised of slab and stack
>> memory.
>
> I'm in the middle of (re)reading all this. Meanwhile I'll push it all
> out to http://ozlabs.org/~akpm/mmots/ for the crazier testers.
>
> One thing:
>
>> Numbers can be found at https://lkml.org/lkml/2012/9/13/239
>
> You claim in the above that the fork worload is 'slab intensive". Or
> at least, you seem to - it's a bit fuzzy.
>
> But how slab intensive is it, really?
>
> What is extremely slab intensive is networking. The networking guys
> are very sensitive to slab performance. If this hasn't already been
> done, could you please determine what impact this has upon networking?
> I expect Eric Dumazet, Dave Miller and Tom Herbert could suggest
> testing approaches.
>

I can test it, but unfortunately I am unlikely to get to prepare a good
environment before Barcelona.

I know, however, that Greg Thelen was testing netperf in his setup.
Greg, do you have any publishable numbers you could share?