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[Gordan Bobic <question208063@xxxxxxxxxxxxxxxxxxxxx>]

Question #208063 on AC100_enablement changed:
https://answers.launchpad.net/ac100/+question/208063

Gordan Bobic proposed the following answer:
On 09/09/2012 11:01 AM, turbooster wrote:
> Question #208063 on AC100_enablement changed:
> https://answers.launchpad.net/ac100/+question/208063
>
> turbooster proposed the following answer:
> Also for reducing memory pressure is UKSM (Ultra Kernel Samepage Merging) http://kerneldedup.org/ (site is in Chinese, some parts are translated), video http://www.youtube.com/watch?v=tQr0LQVn1os .
> I've compiled a kernel with it but am not too sure how to meassure the usefulness. All I can say for now is that it's stable and doesn't use too much CPU. Also see http://www.phoronix.com/scan.php?page=news_item&px=MTEzMTI
> (If anybody happens to know how to read the statistics at /sys/kernel/mm/uksm/ be sure to contact me :P)

Sounds similar to what I was thinking about when I proposed this:

http://www.mail-archive.com/kvm@xxxxxxxxxxxxxxx/msg35817.html

Only what I proposed was simpler and non-intrusive, just would require 
setting a LD_PRELOAD as the first line of rc.sysinit.

Benefit of it is somewhat questionable, though, unless you have a big 
system. In reality, zram for swap will give you most of the benefit. The 
big thing is going to be 0-filled pages, and as they are likely to never 
be accessed, they'll get swapped out first, and zram will just throw 
them away.

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