From: Martin Schwidefsky <schwidefsky@de.ibm.com>
To: Mike Grundy <grundym@us.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>,
Jan Glauber <jan.glauber@de.ibm.com>,
linux-kernel@vger.kernel.org, systemtap@sources.redhat.com
Subject: Re: [PATCH] kprobes for s390 architecture
Date: Tue, 11 Jul 2006 16:13:18 +0200 [thread overview]
Message-ID: <1152627198.18034.19.camel@localhost> (raw)
In-Reply-To: <20060711135430.GA5070@localhost.localdomain>
On Tue, 2006-07-11 at 09:54 -0400, Mike Grundy wrote:
> I did a little measuring. On average stop_machine_run() adds 8.7 msec of
> overhead on a 4-way config. Of that %57 was sub-msec overhead. For the times
> where overhead was measurable, the average was 20.2 msec, lowest at 10msec
> highest at 100msec. That's on a z800 under vm and I have no idea how many real
> cpus the machine has :-)
So adding 100 probes will roughly take 1 second. Not too bad, I expected it
to take longer.
--
blue skies,
Martin.
Martin Schwidefsky
Linux for zSeries Development & Services
IBM Deutschland Entwicklung GmbH
"Reality continues to ruin my life." - Calvin.
next prev parent reply other threads:[~2006-07-11 14:13 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20060623150344.GL9446@osiris.boeblingen.de.ibm.com>
2006-06-23 22:53 ` [heiko.carstens@de.ibm.com: Re: [PATCH] kprobes for s390 architecture] Michael Grundy
2006-06-23 22:21 ` [PATCH] kprobes for s390 architecture Heiko Carstens
2006-06-24 11:36 ` Heiko Carstens
2006-06-24 12:15 ` Heiko Carstens
2006-06-25 13:31 ` Mike Grundy
2006-06-26 8:09 ` Heiko Carstens
2006-06-26 10:49 ` Mike Grundy
2006-06-26 11:19 ` Heiko Carstens
2006-06-27 15:23 ` Martin Schwidefsky
2006-06-28 5:58 ` Heiko Carstens
2006-07-07 17:23 ` Mike Grundy
2006-07-07 17:25 ` Heiko Carstens
2006-07-08 18:54 ` Mike Grundy
2006-07-08 19:58 ` Mike Grundy
2006-07-10 9:28 ` Heiko Carstens
2006-07-10 22:20 ` Mike Grundy
2006-07-11 13:54 ` Mike Grundy
2006-07-11 14:13 ` Martin Schwidefsky [this message]
2006-06-12 13:15 Mike Grundy
2006-06-12 19:40 ` Martin Schwidefsky
2006-06-21 4:28 ` Mike Grundy
2006-06-21 16:38 ` Martin Schwidefsky
2006-06-21 17:15 ` Mike Grundy
2006-06-27 11:56 ` Martin Schwidefsky
2006-06-21 17:34 ` Mike Grundy
2006-06-22 11:28 ` Jan Glauber
2006-06-22 16:36 ` Mike Grundy
2006-06-23 8:50 ` Jan Glauber
2006-06-23 14:38 ` Heiko Carstens
2006-06-22 1:38 ` Mike Grundy
2006-06-21 9:40 ` Jan Glauber
2006-06-21 16:23 ` Jan Glauber
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