Date: Tue, 09 Apr 2019 18:25:20 -0600 From: Ian Lepore <ian@freebsd.org> To: Karl Denninger <karl@denninger.net>, Andrew Gierth <andrew@tao11.riddles.org.uk> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>, ticso@cicely.de Subject: Re: insanely-high interrupt rates Message-ID: <aefa1d778e7684f71ffed49ce32ee80e2273d033.camel@freebsd.org> In-Reply-To: <701e011f-3088-8ed4-4fbb-6fa93ac698f5@denninger.net> References: <004ddba628b94b80845d8e509ddcb648d21fd6c9.camel@freebsd.org> <C68D7E6E-03C1-448F-8638-8BD1717DBF44@jeditekunum.com> <ac7d434f16f3a89f5ef247678d6becdbeded5c3f.camel@freebsd.org> <CE40E2B5-2244-4EF9-B67F-34A54D71E2E8@jeditekunum.com> <f60ea6d2-b696-d896-7bcb-ac628f41f7b8@denninger.net> <20190319161423.GH57400@cicely7.cicely.de> <52df098fdc0caf5de1879c93239534fffbd49b56.camel@freebsd.org> <40f57de2-2b25-3981-a416-b9958cc97636@denninger.net> <669892ac3fc37b0843a156c0ab102316829103fd.camel@freebsd.org> <663f2566-b035-7011-70eb-4163b41e6e55@denninger.net> <20190325164827.GL57400@cicely7.cicely.de> <3db9cf8a-68ee-e339-67bf-760ee51464fd@denninger.net> <fc17ac0f77832e840b9fffa9b1074561f1e766d8.camel@freebsd.org> <d96c7f42-f01b-8990-a558-ee92d631b51d@denninger.net> <dc56a8964cae942354cbe2b5b0620f2eebb569bb.camel@freebsd.org> <874l7fyrpr.fsf@news-spur.riddles.org.uk> <701e011f-3088-8ed4-4fbb-6fa93ac698f5@denninger.net>
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On Tue, 2019-04-09 at 09:55 -0500, Karl Denninger wrote: > On 4/3/2019 11:48, Andrew Gierth wrote: > > Per my earlier analysis, and the discussion on IRC, I'm now running > > my > > RPI2B with the attached patch (against 12-stable). So far, I'm not > > seeing any issues. > > > > I don't think this patch is really a complete fix (in particular, > > on > > arm64 I would expect the opposite problem to exist, with spurious > > physical timer interrupts instead). I'm only running it to confirm > > my > > analysis of the problem and to get a working system. It should do > > fine > > on 32-bit arm though. > > Any progress on this into or within the tree (or comments on what is > a > trivially small patch) for 12-STABLE? I've just posted https://reviews.freebsd.org/D19871 for this. Hopefully I'll get it committed in a day or so and merged to 12-stable a few days after that. -- Ian
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