Thanks. But I am using XEN. And I also don't want to go inside guest. I mean I want to get memory usage at the same level I am getting max memory and total memory.
I have another question. If Memory attribute of GetDomainInfo gives total memory I.e. memory in use plus remaining memory than what is the use of Max Memory? I also programmatically updated Memory using libvirt function I.e. 1GB to 512mb. When tried to get domain statistics again I got Max Memory 512mb and Memory 1GB. How is this possible? On Aug 5, 2016 6:36 PM, "Andrea Bolognani" <abolo...@redhat.com> wrote: > On Fri, 2016-08-05 at 17:45 +0500, Aleem Akhtar wrote: > > Ok. So that's why I was getting 1 GB as a result. > > So is there any way I can get memory in used > programmatically? > > I mean without going inside guest domain. > > The only way I can come up with at the moment relies on > qemu-guest-agent: > > $ virsh qemu-agent-command guest \ > '{"execute": "guest-exec", > "arguments": {"path": "/usr/bin/free", > "capture-output": true}}' > {"return":{"pid":1425}} > > $ virsh qemu-agent-command guest \ > '{"execute": "guest-exec-status", > "arguments": {"pid": 1425}}' > {"return":{"exitcode":0,"out-data":"ICA...zIK","exited":true}} > > $ echo 'ICA...zIK' | base64 -d > total used free > Mem: 4020408 97244 3359560 > Swap: 1048572 0 1048572 > > Of course you'll need to have qemu-guest-agent running > inside the guest and process all the resulting information > yourself. > > See the virDomainQemuAgentCommand() API. > > -- > Andrea Bolognani / Red Hat / Virtualization >
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