Date: Mon, 7 Dec 2015 18:01:08 -0500 (EST) From: Rick Macklem <rmacklem@uoguelph.ca> To: Adrian Chadd <adrian.chadd@gmail.com> Cc: Alexander Kabaev <kabaev@gmail.com>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: slow screen updates on laptop console (i386) Message-ID: <387840531.122544462.1449529268528.JavaMail.zimbra@uoguelph.ca> In-Reply-To: <CAJ-Vmom3xd7B%2B3hcFvP-yzGSDv1m3E%2BdRj_EdL8s%2BVzKMHN2zQ@mail.gmail.com> References: <900422043.121631608.1449496955386.JavaMail.zimbra@uoguelph.ca> <20151207091815.16e11a13@kan> <697195597.121770130.1449500982738.JavaMail.zimbra@uoguelph.ca> <CAJ-Vmom3xd7B%2B3hcFvP-yzGSDv1m3E%2BdRj_EdL8s%2BVzKMHN2zQ@mail.gmail.com>
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Adrian Chadd wrote: > Hi, > > ok. please file a bug for that. It may be something to do with the > hardware and sleep states and skipping wakeups/interrupts or > something. > > Please try using the default again (LAPIC?) and set > kern.eventtimer.periodic=1. See if that fixes it. > Actually made it worse. Instead of being intermittently slow, it was almost constantly slow. I have no idea if these sysctl #s are useful: kern.eventtimer.et.LAPIC.frequency: 49876422 kern.eventtimer.et.LAPIC.flags: 15 rick > (i've had to debug this a few times before.) > > > > -a >
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