[Qemu-discuss] Get real time dirtying memory ratio

[Joaquim Barrera]

Hello guys,

As part of a project I am working on, I would like to obtain how "busy" 
is the guest memory. More precisely, I would like to know how many 
memory pages are being dirtied per time unit (second, ...).

In a migration process I am aware that this parameter, aka the dirtying 
ratio, is well known and used to control the downtime, and that a bitmap 
is used to map the dirty pages, etc.

My point is, there is any chance to, by a little mod or something, to 
have this dirtying ratio available all the time? I think about something 
that even libvirt can query as an additional parameter, just to monitor 
the guest health.

Thank you for all the time spent.

Joaquim