Messages in this thread | | | Date | Mon, 29 Nov 2010 19:17:05 -0500 | From | Mike Blumenkrantz <> | Subject | 2 epoll questions |
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Hi,
I am not subscribed to the list yet, and I would appreciate it if all replies could be CCed to me :).
I have two questions regarding epoll. The epoll code that I am using can all be found in the file here for those interested: https://svn.enlightenment.org/svn/e/trunk/ecore/src/lib/ecore/ecore_main.c
1) Is there any known reason why adding fds to an epoll fd would begin to slow down dramatically after ~6000 fds are added? It is entirely possible that the problem is not epoll at all, but I wanted to ask and see if there was some O(n) code somewhere that was known.
2) If a select on an epoll fd (not one inside the epoll, the actual epoll fd itself) returns EBADF, is there a way to determine which fd is causing the error and then remove it? I am occasionally running into this issue, and it seems to be caused by code which I do not necessarily control closing a fd that is part of my epoll fd without my knowledge (meaning that the closed fd is still in epoll).
Thanks!
-- Mike Blumenkrantz Zentific: Our boolean values are huge.
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