From: ezyang@MIT.EDU (Edward Z. Yang)
Subject: [sup-talk] Sup is hanging
Date: Wed, 03 Jun 2009 14:21:35 -0400 [thread overview]
Message-ID: <1244053108-sup-4982@javelin> (raw)
In-Reply-To: <1244050695-sup-5990@javelin>
The current working theory (based on strace'ing and lsof) is that Sup
is hanging on a select() call that doesn't have any timeout. The reason
why this is hanging is because between opening the connection and
closing it, Sup does some ridiculously slow message parsing code (that
really thrashes the CPU) and by the time it's done the server has
closed the connection (but we don't know about it). The fix would probably
be to always set a timeout, but I don't know what code needs to be fixed
for that.
Cheers,
Edward
next prev parent reply other threads:[~2009-06-03 18:21 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-03 17:39 Edward Z. Yang
2009-06-03 18:11 ` William Morgan
2009-06-03 18:26 ` Edward Z. Yang
2009-06-03 18:21 ` Edward Z. Yang [this message]
2009-06-03 18:45 ` Edward Z. Yang
2009-06-03 21:36 ` William Morgan
2009-06-03 21:48 ` Edward Z. Yang
2009-06-04 2:11 ` William Morgan
2009-06-03 22:00 ` [sup-talk] Sup is hangingy Edward Z. Yang
2009-06-04 1:26 ` Edward Z. Yang
2009-06-04 1:53 ` [sup-talk] Sup is hangingyy Edward Z. Yang
2009-06-04 16:09 ` [sup-talk] Sup is hanging William Morgan
2009-06-05 5:08 ` Edward Z. Yang
2009-06-05 13:23 ` William Morgan
[not found] ` <1244227108-sup-3123@cabinet>
2009-06-05 21:47 ` Edward Z. Yang
2009-06-06 6:20 ` Edward Z. Yang
2009-06-08 18:09 ` William Morgan
2009-06-04 2:12 ` [sup-talk] Sup is hangingy William Morgan
2009-06-04 2:13 ` William Morgan
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