Date: Tue, 20 Jan 2015 05:31:29 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Adrian Chadd <adrian@freebsd.org> Cc: "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org> Subject: Re: svn commit: r277213 - in head: share/man/man9 sys/kern sys/ofed/include/linux sys/sys Message-ID: <54BDDA21.2060100@selasky.org> In-Reply-To: <CAJ-VmomOE6AzbEFw45VOtVbLTtDMbnixkYDVK951pSCkcMrQjQ@mail.gmail.com> References: <201501151532.t0FFWV2Y037455@svn.freebsd.org> <CAJ-Vmok0GXZoojyi=jE=b5D-d338APztaf3Pw0_AAQ-173XSWw@mail.gmail.com> <CAJ-VmomOE6AzbEFw45VOtVbLTtDMbnixkYDVK951pSCkcMrQjQ@mail.gmail.com>
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On 01/19/15 23:22, Adrian Chadd wrote: > In my instance, I'm seeing quite a lot of lock contention between the > userland threads, the network RX threads and the clock thread, all > contending on a single callout wheel being used for TCP timers. One of > the early goals for fixing up the RSS stuff in -HEAD was to make > per-CPU (Well, per-RSS-bucket really) TCP timers not contend with the > NIC RX processing path, and now it does.:( man 9 callout --HPS
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