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Re: systemtap probe points for Xen hypervisor

From: fche at redhat dot com (Frank Ch. Eigler)
To: "Peter Teoh" <htmldeveloper at gmail dot com>
Cc: systemtap at sources dot redhat dot com, xen-devel <xen-devel at lists dot xensource dot com>
Date: Mon, 21 Apr 2008 22:27:54 -0400
Subject: Re: systemtap probe points for Xen hypervisor
References: <804dabb00804211804q6aeaaff8sf495328ba162550@mail.gmail.com> <804dabb00804211855h768cc202i42a2c616e0dfe28b@mail.gmail.com>

"Peter Teoh" <htmldeveloper@gmail.com> writes:

>>  My target of interest will be to trace/analyze  the behavior of the
>>  Xen hypervisor, and the domX guest as well.
>
> Ooops....I just saw this in Usenix 2007 paper: Xenprobes: userspace
> probing framework.  So far, no download yet.  but I don't see much
> of a difference in feature from systemtap [...]

The xenprobes paper doesn't cite systemtap, only kprobes, which sounds
appropriate.  Xenprobes does not appear to probe the hypervisor per se
either.  It simply uses hypervisor-provided shortcuts to permit dom0
to probe domU siblings/subordinates, using algorithms and API styles
right out of k*probes.

- FChE

References:
- systemtap probe points for Xen hypervisor
  - From: Peter Teoh
- Re: systemtap probe points for Xen hypervisor
  - From: Peter Teoh

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