Re: [PATCH] mm: Implement Swap Prefetching v25

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Hello,

Con Kolivas wrote:
Everything is working nicely now, surviving a serious thrashing.
Overall the behaviour I would say has improved as a result of all the
modifications.

Many thanks go to Nick and Andrew for suggestions.

Andrew please consider this version for -mm.

Cheers,
Con

I'm what one would call a typical desktop user. I also very much a layman with kernels. The layman is very interested in believing, if not knowing, that the kernel is doing everything within its power to provide application responsiveness, especially during heavy application loads.

Swap Prefetch has quantifiable and visible results when an application is swapped out and then swapped back in after a idle period (a very logical time to do things). That /is/ an obvious interaction benefit.

I play World of Warcraft daily and it forces many applications into swap. That said, I now regularly experience desktop conditions that are _very_ favorable with the Swap Prefetch patch soon as WoW is cleared out and resources are regained for productive desktop use (browser, email, chat, media, etc). Hard disk activity, after an idle period, almost never get in the way of interactivity (likely due to swapping out) -- because they're back in physical memory. That is _very_ good use of time and resources.

I'm very interested in seeing this patch applied to MM for major testing, so that others with typical desktop demands can get an idea of how this patch is beneficial.

Thanks for your attention,

Best of regards,
Ryan M.


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