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Re: kern/45928: Random freeze and interrupt/system storms (netbsd-5/amd64 and -current/amd64)

The following reply was made to PR kern/45928; it has been noted by GNATS.

From: David Holland <>
Subject: Re: kern/45928: Random freeze and interrupt/system storms
 (netbsd-5/amd64 and -current/amd64)
Date: Tue, 21 Feb 2012 16:59:09 +0000

 On Mon, Feb 06, 2012 at 05:55:03AM +0000, Matthew Mondor wrote:
  >  >  Afterwards I disabled the re0 interface and decided to leave the system
  >  >  running.  The problem so far hasn't occurred.  However, when I looked
  >  >  at rtl8169.c I couldn't find any obvious spl or locking issue so far...
  >  And today I used netbsd-5 a while with re0 disabled, without issue
  >  whatsoever.  Then I enabled re0 and three times I could reproduce the
  >  issue and recover by quickly disabling the interface before the system
  >  was permanently frozen.  Interestingly, I also left a systat-vmstat
  >  command running and I could not really notice abnormal pin interrupt
  >  floods.  However, top will show two of the cores in "100% interrupt"
  >  and the two others in "100% system", as usual.
 The problem could be in ACPI; it might be worth testing with ACPI
 David A. Holland

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