Hi, Another quick question. Is there any benchmark that is used to measure the performance of a VM scheduler? 2013/10/30 R <19890121wr@xxxxxxxxx>: > Hi > Not only lock waiter preemption, but the scheduler may affect VMs' IO > throughput. > Experiments must be taken to figure out the reason. > > I am trying to use preempt_notifier and vmexit handler to build a more > efficient scheduler. > Something like priority boosting. > > 2013/10/29 Gleb Natapov <gleb@xxxxxxxxxx>: >> On Tue, Oct 29, 2013 at 10:20:37AM +0800, R wrote: >>> Hi, everyone >>> >>> I am a graduate student. And now I have some spare time. >>> I notice that KVM uses kernel scheduler to schedule VCPUs. >>> But there exists many problem beyond the capability of current >>> scheduler. (e.g. Lock Waiter Preemption problem) >>> >>> And I don't want to reinvent the wheel. So I want to implement a >>> module which can be used by the scheduler to schedule VCPUs more >>> efficient. >>> >>> Is there any documentation about any problem that I should pay attention to? >>> Any comment is welcome. >>> >> If you are thinking about gang scheduler it was done before, but it will >> never be accepted upstream. And IIRC pvticketlock result was close if >> not better than gang scheduling. If you are thinking about something >> else then implement it in Linux scheduler directly. Linux scheduler is >> not pluggable, so you cannot change it from a module. >> >> -- >> Gleb. > > > > -- > Thanks > Rui Wu -- Thanks Rui Wu -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
