Re: [Bug 350] New: i386 context switch very slow compared to 2.4 due to wrmsr (performance)

From: Dave Jones (
Date: Wed Feb 12 2003 - 07:54:26 EST

On Wed, Feb 12, 2003 at 04:21:43AM +0000, Jamie Lokier wrote:

> > I feel I'm missing something obvious here, but is this part the
> > low-hanging fruit that it seems ?
> You have eliminated one MSR write very cleanly, although there are
> still a few unnecessary conditionals when compared with grabbing a
> whole branch of the fruit tree, as it were.
> That leaves the other MSR write, which is also unnecessary.

Removing that one didn't seem quite so easy, so I wussed out.


| Dave Jones.
| SuSE Labs
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