[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-devel] Re: [patch 0/6] Guest page hinting version 7.



Jeremy Fitzhardinge wrote:
The more complex host policy decisions of how to balance overall memory use system-wide are much in the same for both mechanisms.
Not at all.  Page hinting is just an optimization to host swapping, where
IO can be avoided on many of the pages that hit the end of the LRU.

No decisions have to be made at all about balancing memory use
between guests, it just happens through regular host LRU aging.

Automatic ballooning requires that something on the host figures
out how much memory each guest needs and sizes the guests
appropriately.  All the proposed policies for that which I have
seen have some nasty corner cases or are simply very limited
in scope.

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.