search for: elementsmemorytuning

...qemu/i-000009fa: > memory.limit_in_bytes: 13215727616 > memory.usage_in_bytes: 12998287360 > You can get rid of these problems by setting your own memory limits. The defaults limit get set only if there is no <memtune> setting in the domain XML: http://libvirt.org/formatdomain.html#elementsMemoryTuning > The 4G difference is the cache. That's why I'm so interested in what > is consuming the cache on a VM which should be caching in guest only. > > Regards, > > Brano Zarnovican > Hope this helps, Martin

Hello, iam currently trying to run LXC Containers with libvirt but the memory limit doesn't want to work in the container i see the full 32GB from the Host OS iam pretty sure that iam missing a configline in the xml lxc-template ~ # free -m total used free shared buff/cache available Mem: 32108 626 31396 249 85

...the guest and host. Load on the server is regularly above 20, yet the processors generally are idle and the host is still responsive. Should the concentration of the performance tuning be done on the guest or the host? I've read through the information at http://libvirt.org/formatdomain.html#elementsMemoryTuning but I don't know how the settings apply to my configuration and which ones apply to my hardware. I've included my libvirt xml config below. It was built using virt-manager on fedora15. There appears to be quite a few other options that are available and not provided by virt-manager that I...

On Thu, Aug 8, 2013 at 9:39 AM, Martin Kletzander <mkletzan@redhat.com> wrote: > At first let me explain that libvirt is not ignoring the cache=none. > This is propagated to qemu as a parameter for it's disk. From qemu's > POV (anyone feel free to correct me if I'm mistaken) this means the file > is opened with O_DIRECT flag; and from the open(2) manual, the O_DIRECT