On Tue, Nov 10, 2009 at 09:27:45AM -0600, Adam Litke wrote: > I am working on a feature that enables virtual machines to report memory > statistics to the host. Examples include: free memory, number of pages > swapped out/in, number of page faults, etc. This information is useful > to a virtual machine manager which can use it to make memory ballooning > or VM migration decisions. My implementation uses the virtio-balloon > driver as a conduit for the memory info. > > What is the best way to expose these memory stats in libvirt? I see two > possibilities. The dominfo command already queries the balloon driver > so I could easily extend this command to report the additional fields. > The second, and better IMO, option is to introduce a new command > (dommemstat) with output similar to domblkstat. > > What do you think? The libvirt API guarentee requires that we don't make any changes to the virDomainInfo struct. So adding a new API & virsh dommemstat command would be the logical way forward Regards, Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :| -- Libvir-list mailing list Libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list