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Re: [Qemu-devel] Monitoring Screen Activity in QEMU/KVM
From: |
Claudio Fontana |
Subject: |
Re: [Qemu-devel] Monitoring Screen Activity in QEMU/KVM |
Date: |
Thu, 27 Jun 2013 16:09:31 +0200 |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/20130620 Thunderbird/17.0.7 |
Shehbaz Jaffer wrote:
> I want to determine the amount of screen activity taking place on VGA
> monitor/ Screen for different applications (eg. playing vlc video, normal
> typing.)
>
> When I do not start the X server, I can easily determine the screen activity
> by counting the number of pages accessed in the region 0xA0000 - 0xBffff
> (This is the VGA Monitor region in boot screen).
>
> However when I start the X Server, A diffrent set of pages are hit. Could
> anyone please explain how the VGA Monitor works in QEMU? Or if someone could
> suggest an alternate solution to determine amount of screen activity while
> playing diffrent applications?
>
> [NOTE : I have already checked for the region where X server pages are mapped
> using cat /proc/iomem. But pages are not getting written to the "possible" X
> server mmapped region.]
>
> Regards,
If you define "screen activity" = "number of pages accessed in the range
0xa0000-0xbffff per unit of time", you could keep your thing going by just
using the generic "vga" driver in your Xorg configuration, and that would keep
your model valid I think.
Claudio