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

From: Jamie Lokier (
Date: Tue Feb 11 2003 - 23:21:43 EST

Dave Jones 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.

-- Jamie
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