[Xen-devel] Re: Tmem [PATCH 0/5] (Take 3): Transcendent memory

[Pavel Machek <pavel@xxxxxx>]

On Wed 2009-12-23 09:15:27, Dan Magenheimer wrote:
> > As I mentioned, I really like the idea behind tmem. All I am proposing
> > is that we should probably explore some alternatives to achive this using
> > some existing infrastructure in kernel.
> 
> Hi Nitin --
> 
> Sorry if I sounded overly negative... too busy around the holidays.
> 
> I'm definitely OK with exploring alternatives.  I just think that
> existing kernel mechanisms are very firmly rooted in the notion
> that either the kernel owns the memory/cache or an asynchronous
> device owns it.  Tmem falls somewhere in between and is very

Well... compcache seems to be very similar to preswap: in preswap case
you don't know if hypervisor will have space, in ramzswap you don't
know if data are compressible.

                                                                        Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) 
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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