Messages in this thread | | | Date | Mon, 12 Nov 2007 20:48:20 +0100 | From | Eric Dumazet <> | Subject | Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu access overhead |
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Christoph Lameter a écrit : > On Mon, 12 Nov 2007, Herbert Xu wrote: > >> David Miller <davem@davemloft.net> wrote: >>> Each IP compression tunnel instance does an alloc_percpu(). >> Actually all IPComp tunnels share one set of objects which are >> allocated per-cpu. So only the first tunnel would do that. > > Ahh so the need to be able to expand per cpu memory storage on demand > is not as critical as we thought. >
Yes, but still desirable for future optimizations.
For example, I do think using a per cpu memory storage on net_device refcnt & last_rx could give us some speedups.
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