On 07/02/15 16:59, Eric Dumazet wrote:
On Thu, 2015-07-02 at 09:35 -0700, John Fastabend wrote:


Point is to not dirty cache line for every packet ?

Doing the test means we attempt dirtying only ~HZ times per second,
which really matters to handle millions of packets per second.

My tests show a good enough performance, not sure we want a percpu thing
for this lastuse field.


Does it harm to always set gact->tcf_tm.lastuse ?

cheers,
jamal
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