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

On Fri, Nov 2, 2012 at 2:04 AM, Andrew Morton [off-list ref] wrote:

One thing:

quoted

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.

IIRC, networking guys have reduced their dependency on slab
performance recently.

Few simple benchmarks to run are hackbench, netperf, and Christoph's
famous microbenchmarks. The sad reality is that you usually have to
wait for few release cycles before people notice that you've destroyed
performance of their favourite workload. :-/

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