Re: ULE Status.

On Mon, 6 Jun 2005 15:12:59 -0400 (EDT)
Jeff Roberson <jroberson_at_chesapeake.net> wrote:
> > > > I just fixed what should be the last ULE+KSE+PREEMPTION bug.  Please let
> > > > me know if you run into any problems with it, preferably with a seperate
> > > > mail to me as I'm more likely to see this than one which is cc'd to
> > > > current_at_.
> > > 	Wow! that's cool!
> > > 	I tried to 'nice -20 make -j1024 buildworld' with
> > > 	SCHED_ULE and PREEMPTION kernel options.  I contacted a
> > > 	panic like following, and sorry, I cannot get a crash dump.
> Is this on CURRENT or 5.x?  What is your sched_ule.c version?  I'm doing
> this on CURRENT while playing a movie with mplayer without issue.

	Off course, I'm using latest CURRENT in this time, and
	sched_ule.c,v 1.151.

FreeBSD nadesico.ninth-nine.com 6.0-CURRENT FreeBSD 6.0-CURRENT #4: Mon Jun  6 01:02:49 JST 2005     nork_at_nadesico.ninth-nine.com:/usr/obj/usr/src/sys/NADESICO  i386
$FreeBSD: src/sys/kern/sched_ule.c,v 1.151 2005/06/04 09:24:15 jeff Exp $

> > #22 0xc04b3ebc in sched_add (td=0x0, flags=0)
> >     at /usr/src/sys/kern/sched_ule.c:1745
> > #23 0xc04b4988 in setrunqueue (td=0xc3a3f4b0, flags=0) at kern_switch.c:564
> > #24 0xc04b46a1 in adjustrunqueue (td=0xc3a3f4b0, newpri=16)
> >     at kern_switch.c:325
> > #25 0xc04b3354 in sched_thread_priority (td=0xc3a3f4b0, prio=16 '\020')
> >     at /usr/src/sys/kern/sched_ule.c:1235
> > #26 0xc04b339d in sched_lend_prio (td=0x0, prio=16 '\020')
> >     at /usr/src/sys/kern/sched_ule.c:1250
> > #27 0xc04c7f9e in propagate_priority (td=0xc3a3f4b0)
> >     at /usr/src/sys/kern/subr_turnstile.c:204
> > #28 0xc04c8a7d in turnstile_wait (lock=0xc06d0b60, owner=0x0)
> >     at /usr/src/sys/kern/subr_turnstile.c:629
> > #29 0xc0490351 in _mtx_lock_sleep (m=0xc06d0b60, td=0xc2c58320, opts=0,
> >     file=0x0, line=0) at /usr/src/sys/kern/kern_mutex.c:550
> > #30 0xc0480dec in ithread_loop (arg=0xc2c59c00)
> >     at /usr/src/sys/kern/kern_intr.c:545
> > #31 0xc047fa60 in fork_exit (callout=0xc0480c50 <ithread_loop>, arg=0x0,
> >     frame=0x0) at /usr/src/sys/kern/kern_fork.c:789
> > #32 0xc061053c in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:208

	I think that fork and ithread with sched_ule issue has a issue.