From: William Cohen <wcohen@redhat.com>
To: "Frank Ch. Eigler" <fche@redhat.com>
Cc: systemtap@sources.redhat.com
Subject: Re: tutorial draft checked in
Date: Fri, 03 Mar 2006 21:50:00 -0000 [thread overview]
Message-ID: <4408BA15.2010406@redhat.com> (raw)
In-Reply-To: <1141420594.3595.46.camel@dragon>
Thanks for the tutorial.
The counters used by get_cycles() ? are not synced between processors
this is likely to give wrong results on smp machines, particularly now
with variable clockspeeds. So the examples at the bottom of page 7 are
misleading.
-Will
next prev parent reply other threads:[~2006-03-03 21:50 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-03 17:56 Frank Ch. Eigler
2006-03-03 21:16 ` Martin Hunt
2006-03-03 21:50 ` William Cohen [this message]
2006-03-10 0:51 ` Frank Ch. Eigler
2006-03-10 9:32 ` Martin Hunt
2006-03-10 12:50 ` Frank Ch. Eigler
2006-03-07 0:47 ` Jim Keniston
2006-03-10 17:55 ` Frank Ch. Eigler
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