On 2013/04/10 18:08, Daniel P. Berrange wrote: > This is an update of > > https://www.redhat.com/archives/libvir-list/2013-April/msg00352.html > > Currently libvirt creates a cgroups hiearchy at > > $LOCATION-OF-LIBVIRTD/libvirt/{qemu,lxc}/$GUEST-NAME > > eg > > /sys/fs/cgroup > ├── blkio > │ └── libvirt > │ ├── lxc > │ │ └── busy > │ └── qemu > │ └── vm1 > ├── cpu,cpuacct > │ ├── libvirt > │ │ ├── lxc > │ │ │ └── busy > │ │ └── qemu > │ │ └── vm1 > │ │ ├── emulator > │ │ └── vcpu0 > │ └── system > │ ├── abrtd.service > │ ....snip.... > │ └── upower.service > ├── cpuset > │ └── libvirt > │ ├── lxc > │ │ └── busy > │ └── qemu > │ └── vm1 > │ ├── emulator > │ └── vcpu0 > ├── devices > │ └── libvirt > │ ├── lxc > │ │ └── busy > │ └── qemu > │ └── vm1 > ├── freezer > │ └── libvirt > │ ├── lxc > │ │ └── busy > │ └── qemu > │ └── vm1 > ├── memory > │ └── libvirt > │ ├── lxc > │ │ └── busy > │ └── qemu > │ └── vm1 > ├── net_cls > ├── perf_event > > > This series changes it so that libvirt creates cgroups at > > /system/$VMNAME.{qemu,lxc}.libvirt > > and allows configuration of the "resource partition" (ie the > "/system" bit) via the XML. So we get a layout like this: > > /sys/fs/cgroup > ├── blkio > │ └── system > │ ├── demo.lxc.libvirt > │ └── vm1.qemu.libvirt > ├── cpu,cpuacct > │ └── system > │ ├── abrtd.service > │ ....snip.... > │ ├── demo.lxc.libvirt > │ ....snip.... > │ └── vm1.qemu.libvirt > │ ├── emulator > │ └── vcpu0 > ├── cpuset > │ └── system > │ ├── demo.lxc.libvirt > │ └── vm1.qemu.libvirt > │ ├── emulator > │ └── vcpu0 > ├── devices > │ └── system > │ ├── demo.lxc.libvirt > │ └── vm1.qemu.libvirt > ├── freezer > │ └── system > │ ├── demo.lxc.libvirt > │ └── vm1.qemu.libvirt > ├── memory > │ └── system > │ ├── demo.lxc.libvirt > │ └── vm1.qemu.libvirt > ├── net_cls > ├── perf_event > > > Flattening out the libvirt created hiearchy has serious > performance wins, due to poor kernel scalability with > deep hierarchies. It also makes it easier to configure > system wide policy for resource usage across system > services and virtual machines / containers, since they > all live at the top level in comon resource partitions. > > Changes since v2: > > - Merge previously ACKed patches > - Incorporate Gao Feng's changes to LXC cgroup mount setup > I will review this patchset and do some simple test in this week. Thanks for your great work :) -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list