On Fri, Aug 26, 2016, at 21:50, Eric Dumazet wrote:
> From: Eric Dumazet <eduma...@google.com>
>
> After commit 145dd5f9c88f ("net: flush the softnet backlog in process
> context"), we can easily batch calls to flush_all_backlogs() for all
> devices processed in rollback_registered_many()
>
> Tested:
>
> Before patch, on an idle host.
>
> modprobe dummy numdummies=10000
> perf stat -e context-switches -a rmmod dummy
>
> Performance counter stats for 'system wide':
>
> 1,211,798 context-switches
>
> 1.302137465 seconds time elapsed
>
> After patch:
>
> perf stat -e context-switches -a rmmod dummy
>
> Performance counter stats for 'system wide':
>
> 225,523 context-switches
>
> 0.721623566 seconds time elapsed
Cool demonstration! :}
Acked-by: Hannes Frederic Sowa <han...@stressinduktion.org>
