[Bug 578930] Re: Lucid qemu-kvm: ksmd default config is CPU hog

[Thierry Carrez]

@Nullzone: that's some very good input, thanks. Looking at your
conclusions:

> ksm is good but need some tweaks to doesnt become a problem more than a help
Right, if there is a saner default we should use it, and if there is no sane default we should consider disabling it by default, with strong pointers on how to enable it with the right sleep_millisecs value.

> I'd consider to off ksm in /etc/default/qemu-kvm for desktop versions of Ubuntu (availabe but off by default)
That's difficult to do, since packages have no way to tell if they are on a "server".

> I'd consider to switch default value of sleep_millisecs: 120 even a bit higher in the ubuntu server version. More conservative...
+1 on choosing a less aggressive setting. Ideally upstream would also change its default setting.

CCing Serge Hallyn since he now owns that stack, for his input.

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Lucid qemu-kvm: ksmd default config is CPU hog
https://bugs.launchpad.net/bugs/578930
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