Re: [Xen-devel] [PATCH 1/1] xen/time: do not decrease steal time after live migration on xen

2017-10-20 Thread Boris Ostrovsky
On 10/20/2017 01:37 AM, Dongli Zhang wrote: > Hi Boris, > > - boris.ostrov...@oracle.com wrote: > >> On 10/19/2017 04:02 AM, Dongli Zhang wrote: >>> After guest live migration on xen, steal time in /proc/stat >>> (cpustat[CPUTIME_STEAL]) might decrease because steal returned by >>>

Re: [Xen-devel] [PATCH 1/1] xen/time: do not decrease steal time after live migration on xen

2017-10-19 Thread Dongli Zhang
Hi Boris, - boris.ostrov...@oracle.com wrote: > On 10/19/2017 04:02 AM, Dongli Zhang wrote: > > After guest live migration on xen, steal time in /proc/stat > > (cpustat[CPUTIME_STEAL]) might decrease because steal returned by > > xen_steal_lock() might be less than this_rq()->prev_steal_time

Re: [Xen-devel] [PATCH 1/1] xen/time: do not decrease steal time after live migration on xen

2017-10-19 Thread Boris Ostrovsky
On 10/19/2017 04:02 AM, Dongli Zhang wrote: > After guest live migration on xen, steal time in /proc/stat > (cpustat[CPUTIME_STEAL]) might decrease because steal returned by > xen_steal_lock() might be less than this_rq()->prev_steal_time which is > derived from previous return value of

[Xen-devel] [PATCH 1/1] xen/time: do not decrease steal time after live migration on xen

2017-10-19 Thread Dongli Zhang
After guest live migration on xen, steal time in /proc/stat (cpustat[CPUTIME_STEAL]) might decrease because steal returned by xen_steal_lock() might be less than this_rq()->prev_steal_time which is derived from previous return value of xen_steal_clock(). For instance, steal time of each vcpu is