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Re: kern/52769

The following reply was made to PR kern/52769; it has been noted by GNATS.

From: David Holland <>
Subject: Re: kern/52769
Date: Sun, 4 Mar 2018 08:40:01 +0000

 On Thu, Mar 01, 2018 at 08:25:01AM +0000, Paul Goyette wrote:
  >  It's curious that all reported instances of this PR have involved
  >  a "cvs update" getting stuck in biolock, while everything else just
  >  ends up in tstile.  I wonder what cvs does that is so different
  >  from everything else?
 tstile is, most of the time, just what happens when things pile up
 behind other more interesting deadlocks. Though not always.
 cvs is probably causing it, because cvs does tons of silly metadata
 operations at high speed.
 Is this wapbl, or not? If not, they'll be synchronous and that might
 be causing extra excitement.
 David A. Holland

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