Re: [PATCH 0/4] ksm - dynamic page sharing driver for linux v3

Nick Piggin
2009-04-21T03:00:45Z

On Friday 17 April 2009 17:08:07 Jared Hulbert wrote:
> > As everyone knows, my favourite thing is to say nasty things about any
> > new feature that adds complexity to common code. I feel like crying to
> > hear about how many more instances of MS Office we can all run, if only
> > we apply this patch. And the poorly written HPC app just sounds like
> > scrapings from the bottom of justification barrel.
> >
> > I'm sorry, maybe I'm way off with my understanding of how important
> > this is. There isn't too much help in the changelog. A discussion of
> > where the memory savings comes from, and how far does things like
> > sharing of fs image, or ballooning goes and how much extra savings we
> > get from this... with people from other hypervisors involved as well.
> > Have I missed this kind of discussion?
>
> Nick,
>
> I don't know about other hypervisors, fs and balloonings, but I have
> tried this out. It works. It works on apps I don't consider, "poorly
> written". I'm very excited about this. I got >10% saving in a
> roughly off the shelf embedded system. No user noticeable performance
> impact.

OK well that's what I want to hear. Thanks, that means a lot to me.