We have just released a new RHEL6-based kernel, 042test005. It is shaping up pretty good — as you can see from the changelog, it's not just bug fixes but also performance improvements. If you haven't tried it yet, I suggest to do it today! Do not postpone this until 2011 — after all, this is what will become the next stable OpenVZ kernel.
RHEL6 kernel needs an appropriate (i.e. recent) Linux distribution. If you don't want latest Fedora releases, can't afford RHEL6, and tired of waiting for CentOS 6, I suggest you go with Scientific Linux 6 (SL6). This is yet another RHEL6 clone developed and used by CERN, Fermilabs and other similar institutions.
While SL6 is still at its infancy (they have recently released alpha 3 and plan to release beta 1 at Jan 7 2011), it it worth trying since it's based on a very stable set of sources from RHEL6. Repositories and stuff are available from http://ftp.scientificlinux.org/linux/scientific/6rolling/
RHEL6 kernel needs an appropriate (i.e. recent) Linux distribution. If you don't want latest Fedora releases, can't afford RHEL6, and tired of waiting for CentOS 6, I suggest you go with Scientific Linux 6 (SL6). This is yet another RHEL6 clone developed and used by CERN, Fermilabs and other similar institutions.
While SL6 is still at its infancy (they have recently released alpha 3 and plan to release beta 1 at Jan 7 2011), it it worth trying since it's based on a very stable set of sources from RHEL6. Repositories and stuff are available from http://ftp.scientificlinux.org/linux/scientific/6rolling/


Comments
here it says that the kernel has native cgroup support (http://wiki.openvz.org/Download/kernel/rhel6/042test003.1). I tried to use it with cpu cgroup limiting (used cpu.rt_period_us and cpu.rt_runtime_us for hard CPU limits) but it doesn't work.
Kir, did you tried it or any ETA when this will work ? OpenVZ kernel create the VID hierarchy tree with cgroup objects but as I wrote It doesn't work.
root@kvm01:/cgroup/cpu/101# ls
cgroup.procs cpu.rt_period_us cpu.rt_runtime_us cpu.shares notify_on_release self_destruction tasks
Please file a bug to http://bugzilla.openvz.org/ — this is the best way of saying to developers “guys, please take a look”