Quoting Serge Hallyn (serge.hallyn(a)ubuntu.com):
Hi,
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1201938 documents
a memory leak we're seeing in libvirt. I've reproduced it in 1.0.2,
1.0.6, and an hourly snapshot from yesterday morning (which is built
at
https://launchpad.net/~serge-hallyn/+archive/libvirt-mav)
To reproduce it, I define and start one domain and run virt-manager
locally (just leaving it running in a vnc server). The RSS as observed
by top grows over time, starting at 10M and becoming 87M in about 12
hours.
When I stop the running vm, the memleak does seem to stop. Presumably
having >1 domain would speed up the memleak (explaining the original
bug reporter's woes)
No, the memory leak did not stop altogether with the VM stopped. Since
sending that email RSS has gone up by about 2M.