Hello, Kame. On Tue, Aug 25, 2015 at 11:36:25AM +0900, Kamezawa Hiroyuki wrote: > I think I should explain my customer's use case of qemu + cpuset/cpu (via > libvirt) > > (1) Isolating hypervisor thread. > As already discussed, hypervisor threads are isolated by cpuset. But their > purpose > is to avoid _latency_ spike caused by hypervisor behavior. So, "nice" > cannot be solution > as already discussed. > > (2) Fixed rate vcpu service. > With using cpu controller's quota/period feature, my customer creates > vcpu models like > Low(1GHz), Mid(2GHz), High(3GHz) for IaaS system. > > To do this, each vcpus should be quota-limited independently, with > per-thread cpu control. > > Especially, the method (1) is used in several enterprise customers for > stabilizing their system. > > Sub-process control should be provided by some way.
Can you please take a look at the proposal on my reply to Paul's email? AFAICS, both of above cases should be fine with that. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
