[Bug 212681] I/O is slow for FreeBSD DOMu on XenServer

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212681

--- Comment #41 from Roger Pau Monné <royger at freebsd.org> ---
Can you try to change the event timer and the time counter to a different one
than the Xen one:

# sysctl -w kern.timecounter.hardware=ACPI-fast
# sysctl -w kern.eventtimer.timer=LAPIC

And finally I'm also attaching a patch that actually disables all the fancy PV
stuff completely, could you also patch your kernel with it (if the above things
don't make a difference) and see if that makes a difference?

Thanks, Roger.

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