[status report] RPS/RFS #week12

[Kazuya Goda]

Hi,

The project goal is to implement RPS/RFS on FreeBSD. RPS solves the problem of
mono-queue NIC which can't distribute packets across multiple processors. RFS is
the extension of RPS, which deliver packets to the CPU where
application running.


This week status:

Performance does not improve, so I investigate RPS bottlenecks.
The results of survey showed this is caused by "lock competition".
Multi queue NIC has the same tendency as this.
I may have to improve protocol stack with lock-free for performance improvement.

--Kazuya Goda