[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [RFC] Buffers/caches in VirtIO Balloon driver stats
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [RFC] Buffers/caches in VirtIO Balloon driver stats |
Date: |
Tue, 29 Aug 2017 10:57:26 +0100 |
User-agent: |
Mutt/1.8.3 (2017-05-23) |
On Sun, Aug 27, 2017 at 11:30:33PM +0200, Tomáš Golembiovský wrote:
> Hi,
I have CCed the relevant mailing lists and people most recently involved
in virtio-balloon discussions. Hopefully this will help get the right
people to see your questions.
> We'd like to include information about reclaimable memory into the
> statistics in VirtiO Balloon driver. Namely, we'd like to include
> counters for bufferes and caches of Linux kernel. The patch itself is
> pretty trivial -- no problem there. But before we do that I'd like to
> get some input from the QEMU community.
>
> 1) Is there any reason not to have the stats there?
>
> 2) Considering the balloon device is multiplatform (Linux, BSD,
> Windows), is there a problem with including buffers/caches? These seem
> to be specific to the Linux virtual memory subsystem. Of course, other
> OSes could just report zeros. Are there some internal stats on those
> OSes that could be filled in? I don't now if such or similar statistic
> are available on BSD. On Windows only SystemCache stat looks like
> something relevant. Anyone familiar with those OSes has any suggestions?
>
> Tomas
>
> --
> Tomáš Golembiovský <address@hidden>
>