On Thu, Apr 21, 2016 at 9:13 AM, Maryam Masoudian <maryammasoud...@gmail.com > wrote:
> > > On Thu, Apr 21, 2016 at 5:17 PM, Dario Faggioli <dario.faggi...@citrix.com > > wrote: > >> On Wed, 2016-04-20 at 13:01 -0600, Tamas K Lengyel wrote: >> > On Apr 20, 2016 12:34, "Dario Faggioli" <dario.faggi...@citrix.com> >> > wrote: >> > > On Wed, 2016-04-20 at 10:25 -0600, Tamas K Lengyel wrote: >> > > > On Wed, Apr 20, 2016 at 7:24 AM, Wei Liu <wei.l...@citrix.com> >> > wrote: >> > > > > Not sure. You can check xl manpage for those commands. >> > > > xl doesn't have any command that shows you a breakdown of sharing >> > > > among VMs, >> > > Well, I didn't find any useful description for xl sharing : it just shows > the shared memory. > What I really want is seeing the deduplicated memory among VMs. > I ran two windows VMs and thought of the kernel memory to be shared among > them if the memory de-duplication is enabled in Xen. > But the result of xl sharing for these VMs was 0 . > Xen won't magically share memory across VMs for you, you need to decide what pages want to share and among what VMs. Take a look at https://github.com/tklengyel/drakvuf/blob/master/src/xen_helper/xen_helper.c#L197 for an example on how you can dedup the entire memory of two identical VMs. And as I already mentioned, you can see memory shared across VMs by using the libxc library, as you can see at https://github.com/tklengyel/drakvuf/blob/master/src/xen_helper/xen_helper.c#L245 . Tamas
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