Re: runzeo.py exit with unexpected exit code

The other option I considered was to replace select.select() calls to 
use native epoll library in ZEO/zrpc/client.py.

According to Gevent documentation, monkey.patch_all() may replace 
select.select() with gevent.select.select() for improved cooperativity.

http://www.gevent.org/gevent.monkey.html

Regards,

E

Le 2017-04-06 à 10:06, Jason Madden a écrit :
>
> This error means either one of the file descriptors is negative, or one of the file descriptors is greater than the compile-time constant FD_SETSIZE[1]. FD_SETSIZE is commonly (well, on two systems I checked) defined to be 1024[2]. Since you say that "[t]he issue seem to occur on high load", it seems likely that the file descriptor is too large. That is, you have too large a number of connections open concurrently...that, or there's a file descriptor/socket/connection leak in the code. Running `lsof` against the process might reveal information about the connections and file descriptors when you see this error. Or since you seem to be running with a source checkout of gevent, you could modify it to report the file descriptors when you see this error.
>
> As an aside, prior to gevent 1.2a1[3], gevent would handle this situation differently than the stdlib...sometimes that was a good thing (depending on system configuration), but just as often it could be a very bad thing.
>
> [1] https://github.com/python/cpython/commit/fda7b379acde3ad60bbd42acb6da7e7099d25133
> [2] https://access.redhat.com/solutions/488623
> [3] http://www.gevent.org/changelog.html#select-poll

-- 
Etienne Robillard
[email protected]
http://www.isotopesoftware.ca/

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