Hi All

Is there a tool to monitor qemu-kvm guest vm memory usage ( free in guest vm)?

Nowadays, I have already researched some methods:

1. qemu-kvm process memory usage.

     Since qemu-kvm process memory usage always increases as time goes on, it will not reflect the memory usage in vm.

2. virsh dommemstat

     Just as method 1.

3. virsh qemu-monitor-command --hmp [domain name] "info mem"

     (1) when guest vm memory size less than 4Gbytes, it will output something like this:

            7f882000-7f883000 00001000 urw

            7fbf8000-7fbf9000 00001000 urw

            88000000-88001000 00001000 -rw

            88002000-88003000 00001000 urw

            88004000-88005000 00001000 urw

            c9000000-c9001000 00001000 urw

            e8bfe000-e8bff000 00001000 urw

            ea000000-ea001000 00001000 urw

            ffbfc000-ffbfd000 00001000 -rw

            ffbfe000-ffbff000 00001000 urw

           it shows pde info of PG_PRESENT_MASK, maybe has some relation with guest vm memory usage.

      (2) when guest vm memory size larger than 4Gbytes, it will output noting.

Please help!!