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Date: Tue, 20 Jan 2015 05:31:29 +0100
From: Hans Petter Selasky <hps@selasky.org>
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To: Adrian Chadd <adrian@freebsd.org>
Subject: Re: svn commit: r277213 - in head: share/man/man9 sys/kern
 sys/ofed/include/linux sys/sys
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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