On Tue, Jan 24, 2006 at 02:23:15PM +0100, Robert Olsson wrote:
> etc. In the test below I use my usual lab setup but just let netfilter
> drop the packets. We win about 13% in this experiment below.
>
> Here we process (drop) about 13% packets more when skb'a get reued.
Instead of doing a completely separate skb reuse path, what happens if
you remove the memset() from __alloc_skb() and instead do it in a slab
ctor? I remember seeing that in the profiles for af_unix. Dave, could
you refresh my memory why the slab ctor ended up being dropped? Doing
the memset() at free time is usually almost free since it is usually in
the cache at that point.
-ben
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