On Thu, Jun 23, 2016 at 11:57:45AM +0200, Peter Lieven wrote: > Am 21.06.2016 um 15:18 schrieb Dr. David Alan Gilbert: > > * Peter Lieven (p...@kamp.de) wrote: > > > Hi, > > > > > > while upgrading from Qemu 2.2.0 to Qemu 2.5.1.1 I noticed that the RSS > > > memory usage has heavily increased. > > > We use hugepages so the RSS memory does not include VM memory. In Qemu > > > 2.2.0 it used to be ~30MB per vServer > > > and increased to up to 300 - 400MB for Qemu 2.5.1.1 (same with master). > > > The memory increases over time, but seems > > > not to grow indefinetly. I tried to bisect, but had no result so far that > > > made sense. I also tried valgrind / massif, but > > > valgrind does not see the allocation (at least at exit) and massif fails > > > to rund due to - so it pretends - heap corruption. > > > > > > Any help or ideas how to debug further would be appreciated. > > I think I'd try stripping devices off; can you get a similar difference > > to happen with a guest with no USB, no hugepages, no VGA and a simple > > locally stored IDE disk? > > From what I have debugged so far, it seems to be related to virtio-net. With > that knowledge I will try to bisect again. > > Peter >
Interesting. You can try attaching vhost to tap so virtio net does not process packets in qemu, for comparison. -- MST
