From: Thomas Rast <trast@student.ethz.ch>
To: Jeff King <peff@peff.net>
Cc: <git@vger.kernel.org>, Jonathan Nieder <jrnieder@gmail.com>
Subject: Re: t7006 sometimes hangs in cronjobs on OS X
Date: Wed, 9 Feb 2011 20:16:54 +0100 [thread overview]
Message-ID: <201102092016.55078.trast@student.ethz.ch> (raw)
In-Reply-To: <20110209190900.GA8314@sigill.intra.peff.net>
Jeff King wrote:
> On Wed, Feb 09, 2011 at 03:38:46PM +0100, Thomas Rast wrote:
>
> > I have been running a nightly next&pu smoke tester each on RHEL5 and
> > OS X. For quite some time (at least a month), t7006 gets stuck
> > randomly (i.e., not every night).
BTW, I just noticed when re-reading this that it's a bit confusing.
It never hangs on RHEL (i.e. Linux), only on OS X. (And I only
reported it now because I only just noticed that I had a month's worth
of zombies hanging around. :-)
> > 65211 ?? SN 0:00.03 /bin/sh t7006-pager.sh
> > 65798 ?? SN 0:00.04 /usr/bin/perl /Users/trast/git-smoke/t/test-terminal.perl git --no-pager log
> > 65846 ?? ZN 0:00.00 (git)
> > 65847 ?? ZN 0:00.00 (perl5.10.0)
>
> Hmm. The zombie git process implies to me that git has exited, but for
> some reason we are still stuck in the copy-to-terminal loop and haven't
> reaped it. But the zombie perl process confuses me. We fork a second
> time so that one process copies stderr and the other one copies stdout.
> Is the second perl process the stderr copier, and we are still blocking
> on copying stdout for some reason?
How do I find out?
> But then why is the command name
> different? Is /usr/bin/perl a wrapper script on your platform?
No, it's your average OS X binary (i.e., 'file' says it has an image
for every platform etc.).
The command name apparently just changes when it becomes a zombie:
when I run perl -e 'if (fork) {sleep 10;} else {sleep 5;}' they first
share the command line, but as soon as the child's sleep expires its
command line changes to '(perl5.10.0)'.
I'll have to put off the more involved experimentation somewhat :-(
--
Thomas Rast
trast@{inf,student}.ethz.ch
next prev parent reply other threads:[~2011-02-09 19:17 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-09 14:38 t7006 sometimes hangs in cronjobs on OS X Thomas Rast
2011-02-09 18:30 ` Ben Walton
2011-02-09 19:09 ` Jeff King
2011-02-09 19:16 ` Thomas Rast [this message]
2011-02-09 20:22 ` Thomas Rast
2011-02-09 20:50 ` Jeff King
2011-02-12 2:03 ` Jonathan Nieder
2011-02-12 2:05 ` Jonathan Nieder
2011-02-12 5:12 ` Jeff King
2011-02-12 8:37 ` Jonathan Nieder
2011-02-13 5:31 ` Jonathan Nieder
2011-02-17 12:38 ` [PATCH] tests: skip terminal output tests " Jonathan Nieder
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