[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] S3 sleep in dom0 breaks dom0<->domU wallclock synchronization
On 01/07/2010 15:50, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote: > On 01/07/2010 04:04, "Rafal Wojtczuk" <rafal@xxxxxxxxxxxxxxxxxxxxxx> wrote: > >> Hello, >> xen-3.4.3 x86_64, dom0 2.6.34-9.xenlinux as dom0, >> 2.6.32.14-1.2.105.pvops0 in PV domU. /proc/sys/xen/independent_wallclock is >> 0. >> After resume from S3 sleep in dom0, the wall clock in domU is >> desynchronized from dom0's one (the delta is the length of S3 sleep). It >> does not seem that adj_timex is in progress (the delta is constant in time). >> >> Is it a known issue ? If so, could someone point me to a solution ? > > I think that pv_ops domU kernels pick up Xen's wallclock at boot time, but > won't listen for updates thereafter. So if you ran a non-pv_ops domU, you'd > probably find that its wallclock would be correctly updated after S3. Cc'ing > Jeremy as he'll be able to confirm this. I think his answer will be that you > should run ntp in every guest, but I'm not sure how that will react to > unexpected warps in time. Actually cc'ing Jeremy this time... > -- Keir > >> Regards, >> Rafal Wojtczuk >> >> _______________________________________________ >> Xen-devel mailing list >> Xen-devel@xxxxxxxxxxxxxxxxxxx >> http://lists.xensource.com/xen-devel > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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