On Tue, 3 Mar 2020 at 15:47, mabi <[email protected]> wrote: > It looks like there is a time issue on that VM although I am running the > default ntpd of OpenBSD 6.6 and I have added the following parameter into my > /etc/sysctl.conf on that VM: > > kern.timecounter.hardware=tsc
I've had similar issues with timekeeping within guests of VMM, although there are improvements in -current with the pvclock time source. Since the fix below I now see occasional instances of the clock stepping by a few whole seconds (typically less than 8s) but it's much less frequent and the magnitude is within the bounds of what ntpd can correct. See http://openbsd-archive.7691.n7.nabble.com/pvclock-stability-tp376946p377922.html for some backstory (aside: I see similar small occasional clock jumps of an integer number of seconds on OpenBSD-6.6 guests using tsc running on a VMware ESXi host) Regards Ian
