Re: swap-prefetch: 2.6.22 -mm merge plans

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On 5/9/07, Nick Piggin <[email protected]> wrote:
You said it helped with the updatedb problem. That says we should look at
why it is going bad first, and for example improve use-once algorithms.
After we do that, then swap prefetching might still help, which is fine.
Nick, if you're volunteering to do that analysis, then great. If not,
then you're just providing a airy hope with nothing to back up when or
if that work would ever occur.

Further, if you or someone else *does* do that work, then guess what,
we still have the option to rip out the swap prefetching code after
the hypothetical use-once improvements have been proven and merged.
Which, by the way, I've watched people talk about since 2.4. That was,
y'know, a *while* ago.

So enough with the stop energy, okay? You're better than that.

Con? He is right about the last feature to go in needs to work
gracefully with what's there now. However, it's not unheard of for
authors of other sections of code to help out with incompatibilities
by answering politely phrased questions for guidance. Though the
intersection of users between cpusets and desktop systems seems small
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