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Date:      Fri, 10 Feb 2017 17:56:21 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-xen@FreeBSD.org
Subject:   [Bug 212681] I/O is slow for FreeBSD DOMu on XenServer
Message-ID:  <bug-212681-23905-mGg4jL1BO7@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-212681-23905@https.bugs.freebsd.org/bugzilla/>
References:  <bug-212681-23905@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D212681

--- Comment #41 from Roger Pau Monn=C3=83=C2=A9 <royger@freebsd.org> ---
Can you try to change the event timer and the time counter to a different o=
ne
than the Xen one:

# sysctl -w kern.timecounter.hardware=3DACPI-fast
# sysctl -w kern.eventtimer.timer=3DLAPIC

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 th=
ings
don't make a difference) and see if that makes a difference?

Thanks, Roger.

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