From: "Frank Ch. Eigler" <fche@redhat.com>
To: William Cohen <wcohen@redhat.com>
Cc: systemtap@sources.redhat.com
Subject: Re: Proposed systemtap access to perfmon hardware
Date: Mon, 20 Mar 2006 17:27:00 -0000 [thread overview]
Message-ID: <20060320172703.GA3065@redhat.com> (raw)
In-Reply-To: <441B1B5E.8090401@redhat.com>
Hi -
wcohen wrote:
> [...]
> > [...]
> > Is that sufficiently detailed to begin an implementation?
>
> Pretty close. The one thing that isn't answered is the division of
> the labor for the sampling probes, onetime setup vs sample handler.
> [...]
In other words, the issue is the desire to control sampling-event-type
counters, not just the free-running counters. In this case, one might
use both ".setup" and ".sample" probes for the same SPEC:
# probe perfctr.SPEC.setup { h = $handle }
# probe perfctr.SPEC.sample(1234) { /* like timer.profile */ }
# probe ANY { ... perfctr_{start,stop,query} (h) ... }
- FChE
next prev parent reply other threads:[~2006-03-20 17:27 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-15 16:24 William Cohen
2006-03-15 22:34 ` Frank Ch. Eigler
2006-03-17 16:20 ` William Cohen
2006-03-17 17:10 ` Bill Rugolsky Jr.
2006-03-17 17:34 ` Frank Ch. Eigler
2006-03-17 20:26 ` William Cohen
2006-03-20 17:27 ` Frank Ch. Eigler [this message]
2006-03-22 3:34 ` Maynard Johnson
2006-03-22 18:02 ` William Cohen
2006-03-22 22:16 ` Maynard Johnson
2006-03-22 18:30 ` Frank Ch. Eigler
2006-03-22 19:09 Stone, Joshua I
2006-03-22 20:04 ` Frank Ch. Eigler
2006-03-22 23:23 Stone, Joshua I
2006-03-22 23:46 Stone, Joshua I
2006-03-23 12:54 ` Maynard Johnson
2006-03-23 14:46 ` William Cohen
2006-03-23 17:09 Stone, Joshua I
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