I/O event notification mechanism - select() or epoll() ?

michi1 at michaelblizek.twilightparadox.com michi1 at michaelblizek.twilightparadox.com
Fri Sep 28 01:23:47 EDT 2012


On 17:19 Wed 26 Sep     , Rahul Bedarkar wrote:
> Hi,
> I have to capture kernel udev events through libudev. One of API
> provides asynchronous events by reading on file descriptor. I found
> that there two ways to do that.
> 1) select call
> 2) epoll
> I also found that epoll is smarter and meant to replace old select call.
> What are your thoughts on these ? Which one is better ?

If you are ok to be limited to linux, I would highly recommend using epoll
because of scaleability. Using select is almost like creating a new epoll
descriptor for every call instead of reusing it.

programing a layer 3+4 network protocol for mesh networks
see http://michaelblizek.twilightparadox.com

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