>Kamble, Nitin A wrote:
>> Hi Avi,
>>  I am noticing that with SL 10.1 The QEMU process memory consumption
>> steadily increases, up the the guest memory size and then the guest
dies
>> with unhandled vmexit. If I change the guest memory size I can see
the
>> qemu process dies accordingly, after reaching the size of allotted
guest
>> memory.
>>   Does this hint you to any issues?
>>
>>
>
>Are you talking about RSS?  That's normal behavior (except for the
>untimely death).  kvm allocates memory on demand, like regular Linux
>processes.
>

Yes, the RES column in the TOP. Why is it normal behavior? I see the
guest is looping in the boot-loader switching between real mode and
protected mode without make any progress, and at the same time the
residential memory consumption of the qemu process is steadily
increasing, and once it crosses the amount of physical memory configured
for the guest, the KVM driver gets the invalid vmexit.
  The interesting part is if I change the amount of physical memory to
the guest, the time when the guest dies changes accordingly, and looking
at the top output one can predict when it is going to crash.
  Where is that memory getting consumed in the qemu process? Why is it
affecting the KVM driver?

Thanks & Regards
Nitin

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