So, how do we address the performance regression fixed by this patch? Olaf
Am Mon, 12 Mar 2018 10:15:08 +0100 schrieb Olaf Hering <o...@aepfle.de>: > Am Tue, 6 Mar 2018 11:07:54 +0000 > schrieb Andrew Cooper <andrew.coop...@citrix.com>: > > > > Add a new domctl XEN_DOMCTL_set_vtsc_tolerance_khz to adjust the > > > tolerance value of a running domU that is supposed to be migrated. > > Please can we not proliferate the domctls. > > This looks like it should be part of the set_tsc_info hypercall, not a > > separate hypercall. > > How should this approach be implemented? To me it looks like set_tsc_info > should be called only once for a not-yet-active domU, but I'm not familiar > with timekeeping. > If it can be just called once, and there should be a way to adjust the > tolerance value, then XEN_DOMCTL_settscinfo would need to be changed to > have subcommands.
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