Date: Mon, 29 Nov 2010 10:07:37 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-current@freebsd.org Cc: Alexander Motin <mav@freebsd.org>, David Rhodus <sdrhodus@gmail.com> Subject: Re: panic: sched_priority: invalid priority 2906: nice 0, ticks 122865664 ftick 516947 ltick 517947 tick pri 2726 Message-ID: <201011291007.37044.jhb@freebsd.org> In-Reply-To: <AANLkTimy-2oSgy8E2D-=WO41%2BdSem8MY=ZNCSSH3bBt%2B@mail.gmail.com> References: <AANLkTimy-2oSgy8E2D-=WO41%2BdSem8MY=ZNCSSH3bBt%2B@mail.gmail.com>
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On Friday, November 26, 2010 4:38:49 pm David Rhodus wrote: > I hit this panic on my NFS server. > > -DR > > coke.fun dumped core - see /var/crash/vmcore.2 > > Fri Nov 26 14:50:48 UTC 2010 > > FreeBSD coke.fun 9.0-CURRENT FreeBSD 9.0-CURRENT #14 r215800: Wed Nov > 24 12:35:30 UTC 2010 root@coke.fun:/usr/obj/usr/src/sys/GENERIC > i386 > > panic: sched_priority: invalid priority 2906: nice 0, ticks 122865664 > ftick 516947 ltick 517947 tick pri 2726 I ran the numbers and assuming a hz of 1000, this requires you to have a very large value for ts_ticks (about (2726 * 24) << 10). I suspect this is due to sched_tick() being invoked for a long idle sleep combined with the eventtimer changes. Can you go to frame 10 and 'p td->td_sched->ts_ticks'? -- John Baldwin
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