Re: [patch] preemptive kernel, preemptive-2.3.52-A7

From: Ingo Molnar (mingo@chiara.csoma.elte.hu)
Date: Wed Mar 29 2000 - 11:36:41 EST


On Wed, 29 Mar 2000 yodaiken@fsmlabs.com wrote:

> If read/write is too slow, figuring out some way to force it into mmap
> or do something else smart is an alternative to checking needs
> resched.

read/write is almost never 'too slow'. The code path David was talking
about is the _cached_ read/write path, which can be broken up into tiny
need_resched sections just fine - and this is done in the lowlatency
patch. No mmap or else is needed. Maybe i'm missing your point?

        Ingo

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