On 05/16/2016 05:38 PM, Tony S wrote: > The issue behind it is that the process execution calculation(e.g., > delta_exec) in virtualized environment should not be calculated as it > did in physical enviroment. > > Here are two solutions to fix it: > > 1) Based on the vcpu->runstate.time(running/runnable/block/offline) > changes, to determine how much time the process on this VCPU is > running, instead of just "delta_exec = now - exec_start"; > > 2) Build another clock inside the guest OS which records the exect > time that the VCPU runs. All vruntime calculation is based on this > clock, instead of hyperivosr clock/time(real clock).
Looks like CONFIG_PARAVIRT_TIME_ACCOUNTING is used for adjusting process times. KVM uses it but Xen doesn't. -boris _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
