Re: [patch v2 0/5] Nano/Microsecond resolution for select() and poll()

On Sun, 31 Aug 2008 14:13:45 -0700 (PDT)
Davide Libenzi <davidel@xxxxxxxxxxxxxxx> wrote:

On Sun, 31 Aug 2008, Arjan van de Ven wrote:

Note:
even though poll() (as opposed to ppoll()) only accepts milliseconds
as userspace interface, the behavior will still improve because the
current time no longer needs to be rounded up to the next jiffie,
so on average a 500 microseconds behavior improvement.

Another way to get down in the timeout resolution for newer kernels,
and still supporting the syscalls with millisec timeouts, is to use
timerfds.

perhaps, but once you have to change the app you can also make it use
ppoll() rather than poll().. that's a VERY minute change.


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