[Pkg-xen-devel] Bug#880554: xen domu freezes with kernel linux-image-4.9.0-4-amd64

[Valentin Vidic]

On Mon, Jan 15, 2018 at 11:12:03AM +0100, Christian Schwamborn wrote:
> Is there a easy way to get/monitor the used 'grants' frames? As I understand
> it, the xen-diag tool you mentioned doesn't compile in xen 4.8?

Here is a status from another host:

domid=0: nr_frames=4, max_nr_frames=256
domid=487: nr_frames=6, max_nr_frames=256
domid=488: nr_frames=5, max_nr_frames=256
domid=489: nr_frames=4, max_nr_frames=256
domid=490: nr_frames=6, max_nr_frames=256
domid=491: nr_frames=7, max_nr_frames=256
domid=492: nr_frames=4, max_nr_frames=256
domid=493: nr_frames=4, max_nr_frames=256
domid=494: nr_frames=29, max_nr_frames=256
domid=495: nr_frames=4, max_nr_frames=256
domid=496: nr_frames=4, max_nr_frames=256
domid=497: nr_frames=5, max_nr_frames=256
domid=498: nr_frames=4, max_nr_frames=256
domid=499: nr_frames=4, max_nr_frames=256
domid=500: nr_frames=4, max_nr_frames=256
domid=501: nr_frames=4, max_nr_frames=256
domid=503: nr_frames=5, max_nr_frames=256
domid=572: nr_frames=13, max_nr_frames=256
domid=575: nr_frames=7, max_nr_frames=256

Most of the hosts have older kernels and nr_frames < 10.

And than 494 has a stretch kernel and only 4 vcpus but is quite close to
the current default of 32.  Maybe it just depends on the amount of disk IO?

-- 
Valentin