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[Qemu-devel] Kvm qemu dirty page log facility
From: |
hellen maziku |
Subject: |
[Qemu-devel] Kvm qemu dirty page log facility |
Date: |
Sun, 13 Oct 2013 19:04:54 -0700 (PDT) |
Greetings!
I am new to kvm qemu and are writing a python script to get the number of
pre-copy cycles during a remote vm migration given memory size M of a VM in
MB, the page dirty rate R of a vm in MB/s. My question is on
how to get the page dirty rate. Does kvm qemu provide a dirty page
log facility that provides user space with a bitmap of modified pages
since the last call? And if yes, please kindly direct me on how to get
started. I have searched and come across things like
kvm_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log, int *is_dirty),
I do not know if this is the one and if yes how I can use it or ways to
implement it.
Thank you very much
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