Date: Tue, 20 Jan 2015 05:30:25 +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: <54BDD9E1.6090505@selasky.org> In-Reply-To: <CAJ-Vmok0GXZoojyi=jE=b5D-d338APztaf3Pw0_AAQ-173XSWw@mail.gmail.com> References: <201501151532.t0FFWV2Y037455@svn.freebsd.org> <CAJ-Vmok0GXZoojyi=jE=b5D-d338APztaf3Pw0_AAQ-173XSWw@mail.gmail.com>
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On 01/19/15 22:59, Adrian Chadd wrote:
> Hi,
>
> Would you please check what the results of this are with CPU specific
> callwheels?
>
> I'm doing some 10+ gig traffic testing on -HEAD with RSS enabled (on
> ixgbe) and with this setup, the per-CPU TCP callwheel stuff is
> enabled. But all the callwheels are now back on clock(0) and so is the
> lock contention. :(
>
> Thanks,
>
Hi,
Like stated in the manual page, callout_reset_curcpu/on() does not work
with MPSAFE callouts any more!
You need to use callout_init_{mtx,rm,rw} and remove the custom locking
inside the callback in the TCP stack to get it working like before!
Thank you!
--HPS
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