Re: [PATCH 0/1] RFC: poll/select performance on datagram sockets

[Eric Dumazet]

Le vendredi 29 octobre 2010 Ã 13:40 -0700, David Miller a Ãcrit :
> From: Jesper Juhl <jj@xxxxxxxxxxxxx>
> Date: Fri, 29 Oct 2010 22:20:12 +0200 (CEST)
> 
> > Sorry to intrude out of the blue without really understanding the kernel 
> > side of most of the code in question, but if there's a performance 
> > regression for applications using poll() shouldn't we address that so we 
> > get back to the prior performance level rather than requireing all 
> > userspace apps to switch to epoll() ??
> 
> For such a pathological program like Alban's test case, I say
> absolutely not.

Yes, and with some perf tool help, we probably can find out how to
speedup the thing again, with no API change.



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