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Message-ID: <3DB58EFC.1010908@kegel.com>
Date: Tue, 22 Oct 2002 10:46:36 -0700
From: Dan Kegel <dank@kegel.com>
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To: Mark Mielke <mark@mark.mielke.cc>
CC: "Charles 'Buck' Krasic" <krasic@acm.org>,
       linux-kernel <linux-kernel@vger.kernel.org>,
       linux-aio <linux-aio@kvack.org>
Subject: Re: epoll (was Re: [PATCH] async poll for 2.5)
References: <20021018185528.GC13876@mark.mielke.cc> <Pine.LNX.4.44.0210181209510.1537-100000@blue1.dev.mcafeelabs.com> <20021019065624.GA17553@mark.mielke.cc> <xu4y98utnn7.fsf@brittany.cse.ogi.edu> <20021022172244.GA1314@mark.mielke.cc>
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Mark Mielke wrote:
> epoll is not a poll()/select() enhancement (unless it is used in
> conjuction with poll()/select()). It is a poll()/select()
> replacement.
> 
> Meaning... purposefully creating an API that is designed the way one
> would design a poll()/select() loop is purposefully limiting the benefits
> of /dev/epoll.
> 
> It's like inventing a power drill to replace the common screw driver,
> but rather than plugging the power drill in, manually turning the
> drill as if it was a socket wrench for the drill bit.
> 
> I find it an excercise in self defeat... except that /dev/epoll used the
> same way one would use poll()/select() happens to perform better even
> when it is crippled.

Agreed.
- Dan


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