On 11/27/2012 01:32 PM, Mike wrote:
Hi all
Now I try to test the KSM case in my machine.
the path: virt/kvm/tests/ksm_overcommit.py
It has two cases , one is in serial mode other one is parallel mode
for parallel mode it just create one VM and test KSM.
this shouldn't be a fault????
KSM should work for more than one VM,
I don't know if the author of this case has other aims? or there are
some basic knowledge about ksm I don't know? That means I make a mistake
of the meaning of the KSM????
Hi Mike,
Actually KSM is a kind of kernel feature. So for ksmd qemu-kvm is just a
normal process. ksmd can not tell which memory belongs to which guests.
It only scan the memory in the host and do merge and split. So in the
ksm overcommit cases. the words parallel and serial only means the merge
and split will start at the same time or not. So those words not
directly connect with the number of guests that start in the test. Even
you only start one guest, you can also do memory allocate in it with
host ksmd start, you will see the page merge and split.
Best regards
Yiqiao Pu
Thanks
Mike
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