Re: [PATCH net-next] net: allocate skbs on local node

Eric Dumazet
2010-10-12T07:56:38Z

Le mardi 12 octobre 2010 à 00:24 -0700, Andrew Morton a écrit :

> I'd love to forget it, but it's faster for some things (I forget
> which). Which is why it's still around.

Yes, two years ago it was true on pathological/obscure cases.
Every time I did the comparison, SLUB won.
You asked me, I did yet another test this morning, and 40% is pretty
serious, I believe.

>
> And the ghastly thing about this is that you're forced to care about it
> too because some people are, apparently, still using it.
>

Yes, some people (in my company) still use linux 2.6.9 32bit on HP G6/G7
machines, I know...

I am not saying we should not care, but for any serious network workload
on NUMA arches, SLUB is the best, and seeing Christoph recent work, it
might even get better.

BTW, I believe all modern distros ship SLUB, dont they ?