Re: [Users] Ovirt Memory Page Sharing or to less memory

On Wed, Oct 17, 2012 at 5:02 PM, Mathok <mathok1(a)googlemail.com&gt; wrote: > Same here with ovirt 3.1.0-2 i can't see a change in the UI. But i'm able > to start more VMs and hava a higher usag of my swap partiotion so i think > the change had the desired effect > Oh, does this take advantage of host swap space as well? I thought I had read oVirt could do that somewhere, but I have been reading about so many different virtualization systems over the last few months that when the RHEV 3.1 Admin Guide<https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterpris... not mention swap space in section "4.2.2.2. Memory Optimization Settings Explained", I was not sure if it applied here. This is all it says at the moment: "Memory page sharing allows virtual machines to use up to 200% of their allocated memory by utilizing unused memory in other virtual machines. This process is based on the assumption that the virtual machines in your Red Hat Enterprise Virtualization environment will not all be running at full capacity at the same time, allowing unused memory to be temporarily allocated to a particular virtual machine." Do you have a reference handy that confirms and explains this? I put some speedy SSDs in my hosts to hopefully take advantage of this (and maybe run gluster), so I am hoping to see that in print somewhere. I'll dig it up if you don't have it handy, but a confirmation that this is your experience and understanding would make me feel better in the mean time.