[Twisted-Python] Twisted Consumes 100% CPU
matt at madebykite.com
Sun Feb 24 09:08:22 EST 2008
Brilliant. Thanks Thomas. It's nice to know that it can be fixed :)
email: matthew.glubb at madebykite.com
phone: 44 (0) 7715 754017
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On 24 Feb 2008, at 11:17, Thomas Hervé wrote:
> Matthew Glubb a écrit :
>> Hi All,
>> Hope you are all enjoying your weekends.
>> I have a simple twisted proxy server, obviously passed on
>> twisted.web.proxy. Periodically, it makes a call to a MySQL
>> database, using adbapi.ConnectionPool.
>> When I initially boot the server, I see traffic going through the
>> proxy and everything works fine, twistd consumes less than 5% CPU.
>> I return 24 hours later, the server is still responsive (ie.
>> functions fine) but it consumes 100% of the CPU.
>> I have only noticed this behaviour since I added the db connection
>> via adbapi. I assume, because the proxy still functions well that
>> the threads in the adbapi pool are working overtime.
>> When I manhole in to the server, gc.collect() shows objects are
>> being cleaned up, and gc.garbage reports nothing.
>> I am running Twisted 2.5, Python 2.5.1, Linux 2.6, epoll, MySQL
>> Does anyone have any experience of this problem? Is there an easy
> Unfortunately, this is a known problem with epoll on Twisted 2.5.
> Fortunately, this has been fixed in trunk. You can see more
> informations at http://twistedmatrix.com/trac/ticket/2809. There is
> different workaround for Twisted 2.5, either by backporting
> epollreactor from trunk, or applying one of the small patch proposed.
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