Date: Fri, 23 Aug 2013 13:54:53 -0700 From: Adrian Chadd <adrian@freebsd.org> To: FreeBSD Net <freebsd-net@freebsd.org>, freebsd-current <freebsd-current@freebsd.org> Subject: [rfc] migrate lagg to an rmlock Message-ID: <CAJ-Vmo=VKVDEmmPrTbob6Ft%2B7FWypodNoL36Og=7p_CXBSfktg@mail.gmail.com>
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Hi, I'd like to commit this to -10. It migrates the if_lagg locking from a rw lock to a rm lock. We see a bit of contention between the transmit and receive sides of lagg during traffic loads (10+ gigabit per second.) Using rmlocks eliminate this. http://people.freebsd.org/~adrian/netflix/20130819-lagg-rmlock-1.diff Thanks, -adrian
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