63f7854c1e
Motivation: We do not need to issue a read on timerfd and eventfd when the EventLoop wakes up if we register these as Edge-Triggered. This removes the overhead of 2 syscalls and so helps to reduce latency. Modifications: - Ensure we register the timerfd and eventfd with EPOLLET flag - If eventfd_write fails with EAGAIN, call eventfd_read and try eventfd_write again as we only use it as wake-up mechanism. Result: Less syscalls and so reducing overhead. Co-authored-by: Carl Mastrangelo <carl@carlmastrangelo.com> |
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