Date: Tue, 07 Aug 2001 00:39:48 -0700 From: Mike Smith <msmith@freebsd.org> To: tlambert2@mindspring.com Cc: Matt Dillon <dillon@earth.backplane.com>, Zhihui Zhang <zzhang@cs.binghamton.edu>, freebsd-hackers@FreeBSD.ORG Subject: Re: Allocate a page at interrupt time Message-ID: <200108070739.f777dmi08218@mass.dis.org> In-Reply-To: Your message of "Mon, 06 Aug 2001 23:27:56 PDT." <3B6F8A6C.B95966B7@mindspring.com>
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> It also has the unfortunate property of locking us into virtual
> wire mode, when in fact Microsoft demonstrated that wiring down
> interrupts to particular CPUs was good practice, in terms of
> assuring best performance. Specifically, running in virtual
> wire mode means that all your CPUs get hit with the interrupt,
> whereas running with the interrupt bound to a particular CPU
> reduces the overall overhead. Even what we have today, with
> the big giant lock and redirecting interrupts to "the CPU in
> the kernel" is better than that...
Terry, this is *total* garbage.
Just so you know, ok?
--
... every activity meets with opposition, everyone who acts has his
rivals and unfortunately opponents also. But not because people want
to be opponents, rather because the tasks and relationships force
people to take different points of view. [Dr. Fritz Todt]
V I C T O R Y N O T V E N G E A N C E
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