Date: Sun, 29 Jul 2018 21:41:57 -0700 From: John-Mark Gurney <jmg@funkthat.com> To: Ian Lepore <ian@freebsd.org> Cc: freebsd-arm@FreeBSD.org Subject: Re: sx_sleep not waking up when timo expires Message-ID: <20180730044157.GF2884@funkthat.com> In-Reply-To: <1532874944.61594.110.camel@freebsd.org> References: <20180729010157.GC2884@funkthat.com> <1532874944.61594.110.camel@freebsd.org>
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Ian Lepore wrote this message on Sun, Jul 29, 2018 at 08:35 -0600: > On Sat, 2018-07-28 at 18:01 -0700, John-Mark Gurney wrote: > > I recently upgraded my router to an Pine A64-LTS board, and have hit > > the same issue as PR 222126[1]. The solution at the end does not work > > for me, as I do not have that line in my loader.conf: > > kern.timecounter.smp_tsc_adjust=1 > > > > I have verified that the wake up does not happen, as I used a dtrace > > script to verify that pf_purge_expired_states is called or not called.. > > When I change the timeout, pf will kick the thread and get things > > running again, but it has stopped a couple times later... > > > > I'm running a recent SNAPSHOT: > > FreeBSD gate2.funkthat.com 12.0-CURRENT FreeBSD 12.0-CURRENT #0 r336134: Mon Jul 9 19:20:11 UTC 2018 root@releng3.nyi.freebsd.org:/usr/obj/usr/src/arm64.aarch64/sys/GENERIC arm64 > > > > This is likely reproducable by just starting pf, even in a pass all > > mode, and watching for when the function stops getting called... I'll > > see if I can't get an extermely minimal config to reproduce it. > > > > Any suggestions? > > > > [1] https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222126 > > > > Sounds like > > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229644 > > which has some patches attached which reduce but don't quite eliminate > the occurrances, so nothing has been committed yet. I just ordered a > SOPINE board so I can do some hands-on debugging. Hmm... The interesting part is that I haven't seen ANY timer stability issues though... ntpd is still running w/o troubles... Only ntpd logs I have are leap second file related: Jul 28 22:36:56 gate2 ntpd[869]: leapsecond file ('/var/db/ntpd.leap-seconds.list'): expired less than 214 days ago -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."
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