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Re: [Qemu-devel] [RFC] virtio: Report new guest memory statistics pertin

From: Anthony Liguori
Subject: Re: [Qemu-devel] [RFC] virtio: Report new guest memory statistics pertinent to memory ballooning
Date: Mon, 09 Nov 2009 07:59:21 -0600
User-agent: Thunderbird (X11/20090825)

Avi Kivity wrote:

         (qemu) info balloon
         balloon: actual=1024 MB
         balloon: pswapin=0 pages
         balloon: pswapout=0 pages
         balloon: panon=3928 KB
         balloon: pgmajfault=0
         balloon: pgminfault=247914
         balloon: memfree=987032 KB
         balloon: memtot=1020812 KB

        Is this agreeable?

It's important that these statistics be cross platform. Can you (or someone knowledgeable in Windows) verify that all of these are meaningful there? I'd expect it to be so with the possible exception of panon.

They don't have to all be cross platform. We can expose platform specific metrics via feature bits. We should only disable features that the guest has acknowledged.

But of course, whenever possible, we want metrics to be meaningful cross platform.


Anthony Liguori

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