Messages in this thread |  | | Date | Tue, 8 Jan 2002 19:08:13 -0200 (BRST) | From | Rik van Riel <> | Subject | Re: [2.4.17/18pre] VM and swap - it's really unusable |
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On Tue, 8 Jan 2002, Daniel Phillips wrote:
> The preemptible kernel can reschedule, on average, sooner than the > scheduling-point kernel, which has to wait for a scheduling point to > roll around.
The preemptible kernel ALSO has to wait for a scheduling point to roll around, since it cannot preempt with spinlocks held.
Considering this, I don't see much of an advantage to adding kernel preemption.
regards,
Rik -- "Linux holds advantages over the single-vendor commercial OS" -- Microsoft's "Competing with Linux" document
http://www.surriel.com/ http://distro.conectiva.com/
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