| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
Re: [Xen-devel] Copy-on-write memory to allow many more xenU domains per
Ian Pratt wrote:
Hello
Some time ago Michael Vrable talked about copy-on-write memory to enable
large numbers of nearly identical machines to run on the same physical
hardware. Is this a feasible proposition? I asked a few days ago in the
original thread, but no-one seems to have noticed. It seems to me that
it would be a very significant feature to offer.
It's useful for honeypots and other situations where you want
very large numbers of VMs, but isn't generally a huge win.
When I was doing the live migration work I recorded fingerprints
of all VM pages that were on several systems, and didn't find a
whole lot of commonality between VMs.
I thought the idea would be to have a 'clone' primitive that would work
in a similar way to Unix fork? The clone would start off sharing all
pages, although a lot of them would get copied fairly quickly. Does
anyone have an idea of what proportion or number of pages in a Linux
system stay constant (and are not paged out) after boot?
--
David Hopwood <david.nospam.hopwood@xxxxxxxxxxxxxxxx>
-------------------------------------------------------
This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
Use IT products in your business? Tell us what you think of them. Give us
Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
http://productguide.itmanagersjournal.com/guidepromo.tmpl
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/xen-devel
|
|
|
| |
|
Home