* how can I find out the free pages in a guest OS?
@ 2009-07-16 9:38 刘海坤
0 siblings, 0 replies; only message in thread
From: 刘海坤 @ 2009-07-16 9:38 UTC (permalink / raw)
To: xen-devel@lists.xensource.com
[-- Attachment #1.1: Type: text/plain, Size: 621 bytes --]
Hi, all
I want to reduce the checkpoint size of a VM by memory exclusion. I try to find out all the free pages by reference count at VMM-level, As they declared that:
/* Page is on a free list: ((count_info & PGC_count_mask) == 0). */ , in struct page_info which is defined in /xen/include/asm-x86/mm.h, but unfortunately, all the pages in a idle VM accords with this condition. I prints out the reference count of all memory pages, all of them are equal to or bigger than 2. Anyone can tell me the reason? and how can I find out the free pages in a guest OS?
Best regards
haikun liu
2009-07-16
[-- Attachment #1.2: Type: text/html, Size: 1938 bytes --]
[-- Attachment #2: Type: text/plain, Size: 138 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2009-07-16 9:38 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-07-16 9:38 how can I find out the free pages in a guest OS? 刘海坤
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.