> Hello.
>
> I am trying to determine the cause of the increasing memory usage that I
> see on uWSGI workers running a particular application, so I need to signal
> a specific worker to run a function that uses objgraph to print a
> reference graph.
>
> I have looked at uWSGI signals and timers, but according to the
> documentation I cannot specify a certain worker to run the handler code, a
> random worker will be chosen by the master process. Posix signals USR1 and
> USR2 are also taken by uWSGI to print stats. Using a Django view to do it
> also does not work because I can't force a certain worker to take that
> request.
>
> What would be the best way to accomplish this task? Is there a signal that
> I can register that is called when the worker is about to be recycled due
> to reload-on-rss, for example?
>
> Thanks,
> André
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>
@signal(10,target='worker3')
def draw_graph(signum):
...
will do the trick.
Posix signals (expecially in gevent) are a bad idea. The uWSGI gevent plugins
maps uWSGI signals handler to greenlet, so they are perfect for that kind
of things.
--
Roberto De Ioris
http://unbit.it
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