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Date:      Sun, 21 Jan 2018 22:07:39 +0100
From:      Hans Petter Selasky <hps@selasky.org>
To:        Johannes Lundberg <johalun0@gmail.com>
Cc:        freebsd-current <freebsd-current@freebsd.org>
Subject:   Re: Periodical interrupt storm when playing game with USB keyboard
Message-ID:  <64218617-98d2-0e6e-5872-e44106e61bf7@selasky.org>
In-Reply-To: <CAECmPwtWr0t5_xLgg4NMxnjz317sqnfR9-ttH62szq4fwPdO=Q@mail.gmail.com>
References:  <CAECmPwvDQBYw=mKJpZfUdKpXSC8GysZKSk0f9qaZEXCvy_QeMA@mail.gmail.com> <e2851846-0678-5cb9-0fce-e9cf49c41a2e@selasky.org> <CAECmPwvgMDBTUjhAERe4bKLgNYCim9bwdHw2JEL0RgTckMjSDw@mail.gmail.com> <CAECmPwtWr0t5_xLgg4NMxnjz317sqnfR9-ttH62szq4fwPdO=Q@mail.gmail.com>

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On 01/21/18 21:45, Johannes Lundberg wrote:
> What does kern.eventtimer.periodic do?  The sysctl description wasn't
> that elaborate...

It turns off re-programming the timer every time there is a new callout 
with earlier completion time.

--HPS



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