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Date: Wed, 18 Dec 2002 14:12:07 -0500
From: Mark Mielke <mark@mark.mielke.cc>
To: Horst von Brand <vonbrand@inf.utfsm.cl>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Intel P6 vs P7 system call performance
Message-ID: <20021218191207.GA21147@mark.mielke.cc>
References: <sneakums@zork.net> <6u4r9bsakz.fsf@zork.zork.net> <200212181410.gBIEAod6027746@pincoya.inf.utfsm.cl>
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On Wed, Dec 18, 2002 at 11:10:50AM -0300, Horst von Brand wrote:
> Sean Neakums <sneakums@zork.net> said:
> > How are system calls a new feature?  Or is optimizing an existing
> > feature not allowed by your definition of "feature freeze"?
> This "optimizing" is very much userspace-visible, and a radical change in
> an interface this fundamental counts as a new feature in my book.

Since operating systems like WIN32 are at least published to take
advantage of SYSENTER, it may not be in Linux's interest to
purposefully use a slower interface until 2.8 (how long will that be
until people can use?). The last thing I want to read about in a
technical journal is how WIN32 has lower system call overhead than
Linux on IA-32 architectures. That might just be selfish of me for
the Linux community... :-)

mark

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