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Date:      Thu, 21 Dec 2006 00:14:05 -0400
From:      "Marc G. Fournier" <scrappy@hub.org>
To:        freebsd-stable@freebsd.org
Subject:   DDB and -stable: show threads loops output with no end?
Message-ID:  <27BC372A03C4DEEF9020F34E@ganymede.hub.org>

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Is it supposed to go on into infiniti?

  102115 (0xffffff015f88a260)  sched_switch() at sched_switch+0x11f
  100979 (0xffffff0147d79000)  sched_switch() at sched_switch+0x11f
  100757 (0xffffff002f189260)  sched_switch() at sched_switch+0x11f
  100295 (0xffffff0136e46be0)  sched_switch() at sched_switch+0x11f
  101894 (0xffffff01496a9720)  sched_switch() at sched_switch+0x11f
  101309 (0xffffff01686c9be0)  sched_switch() at sched_switch+0x11f
  101904 (0xffffff0049d86980)  sched_switch() at sched_switch+0x11f
  102212 (0xffffff0038f90260)  sched_switch() at sched_switch+0x11f
  101995 (0xffffff0032daa720)  sched_switch() at sched_switch+0x11f
  100138 (0xffffff0140ad9260)  sched_switch() at sched_switch+0x11f
  102083 (0xffffff00c1306260)  sched_switch() at sched_switch+0x11f
  100132 (0xffffff0140c9a260)  sched_switch() at sched_switch+0x11f
  101481 (0xffffff0183356be0)  sched_switch() at sched_switch+0x11f
  101759 (0xffffff017a0b8260)  sched_switch() at sched_switch+0x11f
  100356 (0xffffff012e9db720)  sched_switch() at sched_switch+0x11f
  101201 (0xffffff007ba18be0)  sched_switch() at sched_switch+0x11f
  101637 (0xffffff004c7dc720)  sched_switch() at sched_switch+0x11f

I couldn't figure out how to break out of it, and the above is nowhere near all 
the output ... it just seemed to keep looping through the same values on the 
left column ... from a script session:

io# grep 0xffffff004c7dc720 /vm/neptune
  101637 (0xffffff004c7dc720)  sched_switch() at sched_switch+0x11f
  101637 (0xffffff004c7dc720)  sched_switch() at sched_switch+0x11f
io# grep 0xffffff007ba18be0 /vm/neptune
  101201 (0xffffff007ba18be0)  sched_switch() at sched_switch+0x11f
  101201 (0xffffff007ba18be0)  sched_switch() at sched_switch+0x11f

I couldn't break out after I typed 'show threads' ...

The server had hung, I broke into DDB ...

I'll be surprised if the above means anything to anyone, but, unfortunately, by 
that point all I coudl do was power cycle :(

- ----
Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email . scrappy@hub.org                              MSN . scrappy@hub.org
Yahoo . yscrappy               Skype: hub.org        ICQ . 7615664
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