[Twisted-Python] Strange behaviour for epoll reactor

[Mustafa Sakalsiz]

Yes, I saw the ticket and the patch. Thanks for your help. It works well now.

On Dec 12, 2007 3:56 AM, Alvin Delagon <adelagon at gmail.com> wrote:
> To summarize Jean-Paul's link, you can just a two-liner patch in the
> epollreactor.py to fix this (after line 201 if you're using the twisted 2.50
> release)
>
> if event & _epoll.HUP or event & _epoll.ERR:
>                     why = main.CONNECTION_LOST
>
>
>
>
> On Dec 11, 2007 9:57 PM, Jean-Paul Calderone <exarkun at divmod.com> wrote:
> >
> > On Tue, 11 Dec 2007 15:06:45 +0200, Mustafa Sakalsiz <sakalsiz at gmail.com>
> wrote:
> > >We have a twisted application uses the epoll reactor. Sometimes it
> > >wastes %100 cpu. It has also some threads for single isolated
> > >functions (using deferToThred). First we suspected that threads don't
> > >end and goes to an infinite loop. Because application still accepts
> > >connections and executes the requested functions. Then I ran the
> > >following ps command
> > >
> > >ps h -Leo pid,pcpu,args,lwp
> > >
> > >Looking at the output, the main thread seemed to be wasting the whole
> > >cpu time. Later on I attached the process to the strace and saw the
> > >output below. I don't how does it happen or when does it happen. It is
> > >not regular nor repeatable, but this is the strace output when it gets
> > >into loop. I send to the list, because it may be useful for someone.
> > >
> > >Now we switched back to the select reactor.
> > >
> > >P.S.: We use perspective broker on the server side and qt4reactor for
> > >the client.
> >
> > This sounds like this issue:
> >
> >  http://twistedmatrix.com/trac/ticket/2809
> >
> > This is fixed in current trunk at HEAD and the fix will be included in the
> > next release of Twisted.
> >
> > Jean-Paul
> >
> >
> >
> >
> > _______________________________________________
> > Twisted-Python mailing list
> > Twisted-Python at twistedmatrix.com
> > http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
> >
>
>
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>



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