> On Mar 8, 2016, at 11:24 PM, Matilda Bernard <serah4...@gmail.com> wrote:
> 
>    "I've never seen this, personally, and my understanding of Twisted's 
> transport mechanism is that it would be impossible unless the reactor were 
> completely frozen for a very long period of time (4+ minutes, at least)."
> 
> How can I detect that state?

Is the server completely unresponsive for multiple minutes at a time?

> We're using OEL 6.5 and PyPy 2.6.0

You should upgrade to PyPy 4.0.1.  (Generally speaking you should always run 
the latest available PyPy, since they only really do bugfix and performance 
releases; they don't break compatibility)  I don't remember what version it was 
in, but somewhere in the 2.x series there was a nasty file descriptor leak 
whose symptoms might match what you're seeing.

-glyph

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