[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Re: [Xen-users] Re: Xen 3.1 released!
Keir Fraser schrieb: On 25/5/07 14:20, "Tomasz Chmielewski" <mangoo@xxxxxxxx> wrote:Hmmm... That's not so explicable. Obviously something in save/restore is causing unpageable allocations to happen. Could be pagetables for mappings of HVM guest memory, or something like that. Needs investigating further, I think.Could be. Now that I repeated the save/restore a couple of times, total RAM usage for dom0 jumps to ~700 MB sometimes during domain save (dom0 has now about 2.3 GB RAM, domU has 1.7 GB RAM; 4 GB RAM installed now in the machine).The only thing I would expect could so dramatically inflate dom0's memory usage would be caching of disc blocks from the saved image file. But we added explicit cache flushing to both domain-save and domain-restore before releasing 3.1. The flushes are only advisory though, so perhaps they are getting ignored for some reason. For your notice, I just saw 1.3 GB RAM usage when doing a 1.7 GB HVM domain save :) -- Tomasz Chmielewski http://wpkg.org _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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