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From: Ed Maste <emaste@freebsd.org>
Date: Fri, 12 Sep 2014 13:04:36 -0400
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Subject: Re: Fwd: Interrupt Overload
To: Konstantin Belousov <kostikbel@gmail.com>
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On 7 June 2014 14:41, Konstantin Belousov <kostikbel@gmail.com> wrote:
> Try to set the tunable hw.drm.msi to 0 before i915 driver is loaded.
> I.e. the easiest is to set it at loader prompt.  If you load driver
> by starting Xorg, then kenv hw.drm.msi=0 would be enough.

A similar issue is reported in PR 193500, but unlike this case it's
reported that hw.drm.msi=0 does not solve it.

I've added a request to the PR for vmstat -i during the storm.