Re: [asio-users] boost asio overhead/scalability

[Christof M. <cm...@cm...>]

On Wed, 18 Apr 2012 00:15:48 +0400, Marat Abrarov wrote:
> This behavior is quite expected. So the only thing left is thread scheduling - recently I came across an Asio bug
> tracker's record "epoll_reactor could cause unnecessary wakeups"
> (http://sourceforge.net/tracker/?func=detail&aid=3494858&group_id=122478&atid=694037)

Actually, I have seen this behaviour - what's even more annoying is
that the Linux kernel seems to happily post EPOLLOUT events after each
send (even if the state hasn't changed).

I did try to patch that in a very crude way by just removing the
EPOLLOUT registration from the asio header files (as it's not needed
for my tests at all) - unfortunately, the run-times didn't improve
with that change.


Christof

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