On 01/15/2014 10:36 PM, Piotr Karbowski wrote:
Hello,
On 01/15/2014 11:03 AM, Michael S. Tsirkin wrote:
Could you explain how you measure that exactly?
I check the resident memory (RES) of qemu-system-x86_64 proces.
Yes, this should not happen.
One interesting thing to try would be switching device type from
virtio-net to e1000.
This means vhost will be initialized but not started.
So with virtio-net-pci + vhost=on I have VM process on 580-590 MB of RES
memory, if I disable vhost OR set e1000 NIC and leave vhost enabled, its
take just 109-120 MB of resident memory.
The memory usage check is done after few minutes after VM start, and the
vm have minimal debian7 system without even single additional service.
Quick note, the test was done on VM with 512 MB memory set, if I test it
on the 2 GB one, RES with vhost-enabled virtio-net-pci goes a bit above
2 GB shortly after start.
-- Piotr.
