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Date: Tue, 28 Jan 2003 14:15:33 -0800 (PST)
From: Davide Libenzi <davidel@xmailserver.org>
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To: Jamie Lokier <jamie@shareable.org>
cc: "Bill Rugolsky Jr." <brugolsky@telemetry-investments.com>,
       Mark Mielke <mark@mark.mielke.cc>,
       Lennert Buytenhek <buytenh@math.leidenuniv.nl>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: bug in select() (was Re: {sys_,/dev/}epoll waiting timeout)
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On Tue, 28 Jan 2003, Jamie Lokier wrote:

> Davide Libenzi wrote:
> > ( if Tms > 0 )
>
> Which is unfortunate, because that doesn't allow for a value of Tms ==
> 0 which is needed when you want to sleep and wake up on every jiffie
> on systems where HZ >= 1000.  Tms == 0 is taken already, to mean do
> not wait at all.

Waking up every jiffie does not make a lot of sense in most applications
since they probably prefer to deal with seconds and its derivates, to have
a predictable behavior on different systems. Functions like
poll/select/epoll are simply not the right solution if you want to cut the
microsecond on sleep times.



- Davide

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