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RE: [Xen-devel] [RFC] [PATCH] use "reliable" tsc properly when available

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, "Xen-Devel (E-mail)" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] [RFC] [PATCH] use "reliable" tsc properly when available, but verify
From: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
Date: Tue, 29 Sep 2009 12:34:47 -0700 (PDT)
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> Who's actually going to go looking for this data in their 
> logs and report it to you?

I was thinking about posting an appeal on xen-devel
and xen-users asking anyone using a recent xen-unstable
hypervisor to run

# xm debug-key s
# xm dmesg | tail
# cat /proc/cpuinfo | grep "model name"

and post or send the results.

And of course I was going to do the same on any
machines I can get my hands on.

> I think we should leave this until plans are more 
> fully formed.

OK, then I will move forward with the assumption that
what the processor and server vendors say is correct
(that tsc IS really reliable if the cpuid bit says
it is) and ignore Jeremy's cautions and my own
paranoia.

Thanks,
Dan

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