Date: Sat, 20 Aug 2011 01:15:31 +0900 From: Kazuya Goda <gockzy@gmail.com> To: soc-status@freebsd.org Subject: [status report] RPS/RFS #week12 Message-ID: <CA%2Bz95aWue65eYTu=Vn0=ktDRRa=39VmMrFX7VMrWDzP=Ue8QvQ@mail.gmail.com>
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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
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