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    SubjectRe: Intel P6 vs P7 system call performance
    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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