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Re: [fedora-virt] disabling ksm by default



On Tue, Oct 27, 2009 at 03:55:16PM +0000, Mark McLoughlin wrote:
> On Tue, 2009-10-27 at 10:46 -0500, Justin M. Forbes wrote:
> > On Tue, 2009-10-27 at 17:31 +0200, Izik Eidus wrote:
> > > On 10/27/2009 04:42 PM, Justin M. Forbes wrote:
> For Fedora 13, it'll be off by default in the kernel and the recommended
> way of switching it on is with 'chkconfig ksm on'
> 
> For Fedora 12, it's on by default in the kernel, 'chkconfig ksm on' just
> changes max pages and the only way of disabling it is by manually
> writing zero to /sys/kernel/mm/ksm/run
> 
> IMHO, if we are to change anything for Fedora 12, we should move closer
> to Fedora 13 behaviour, not further away from it - i.e. make it off by
> default in the kernel, but I'm fine with delaying that until post GA
> 
> We'll probably end up with this behaviour in F12 updates at some point
> anyway when 2.6.32 is pulled in

Agreed, we should change our custom patches to match upstream, so its
off by default.

Daniel
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