From: "Paul E. McKenney" <paulmck@us.ibm.com>
To: Karim Yaghmour <karim@opersys.com>
Cc: Kristian Benoit <kbenoit@opersys.com>,
linux-kernel@vger.kernel.org, bhuey@lnxw.com, andrea@suse.de,
tglx@linutronix.de, mingo@elte.hu, pmarques@grupopie.com,
bruce@andrew.cmu.edu, nickpiggin@yahoo.com.au, ak@muc.de,
sdietrich@mvista.com, dwalker@mvista.com, hch@infradead.org,
akpm@osdl.org, rpm@xenomai.org
Subject: Re: PREEMPT_RT vs I-PIPE: the numbers, part 2
Date: Wed, 22 Jun 2005 14:23:54 -0700 [thread overview]
Message-ID: <20050622212354.GI1296@us.ibm.com> (raw)
In-Reply-To: <42B9B917.9010606@opersys.com>
On Wed, Jun 22, 2005 at 03:16:39PM -0400, Karim Yaghmour wrote:
>
> Paul E. McKenney wrote:
> > (And, yes, there are other CDFs lacking a 30us bulge that would be
> > consistent with a 55us "blue-moon" bulge -- so I guess I am asking
> > if you have the CDF or the raw latency measurements -- though the
> > data set might be a bit large... And I would have to think about
> > how one goes about deriving individual-latency CDF(s) given a single
> > dual-latency CDF, assuming that this is even possible...)
>
> This is a bandwidth issue. The compressed archive containing the
> interrupt latencies of all our test runs is 100MB. I could provide
> a URL _privately_ to a handful of individuals, but beyond that
> someone's going to have to host it.
>
> Let me know if you want this.
The approach of measuring the target's and the logger's latencies
separately is a -much- better approach than using strange mathematical
techniques with strange mathematical assumptions. So please don't
waste any further time on my misguided request for the full data set!
> Of course, now that LRTBF is out there, others can generate their
> own data sets.
True enough!
Thanx, Paul
next prev parent reply other threads:[~2005-06-22 21:27 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-20 17:13 PREEMPT_RT vs I-PIPE: the numbers, part 2 Kristian Benoit
2005-06-20 18:31 ` Bill Huey
2005-06-22 16:00 ` Karim Yaghmour
2005-06-22 19:29 ` Bill Huey
2005-06-22 20:05 ` Ingo Molnar
2005-06-22 20:39 ` Karim Yaghmour
2005-06-22 22:04 ` Ingo Molnar
2005-06-22 23:03 ` Lee Revell
2005-06-22 23:52 ` Karim Yaghmour
2005-06-22 23:38 ` Karim Yaghmour
2005-06-22 23:57 ` Andrea Arcangeli
2005-06-23 0:05 ` Daniel Walker
2005-06-23 0:48 ` Karim Yaghmour
2005-06-23 0:06 ` Ingo Molnar
2005-06-23 0:47 ` Karim Yaghmour
2005-06-23 0:55 ` Bill Huey
2005-06-23 1:09 ` Karim Yaghmour
2005-06-23 1:15 ` Bill Huey
2005-06-23 1:47 ` Karim Yaghmour
2005-06-23 0:59 ` David Lang
2005-06-23 1:22 ` Karim Yaghmour
2005-06-23 1:42 ` David Lang
2005-06-23 2:09 ` Karim Yaghmour
2005-06-23 2:15 ` David Lang
2005-06-23 1:34 ` Ingo Molnar
2005-06-23 2:02 ` Karim Yaghmour
2005-06-23 3:57 ` Lee Revell
2005-06-23 4:13 ` Karim Yaghmour
2005-06-22 20:10 ` Karim Yaghmour
2005-06-22 20:15 ` Bill Huey
2005-06-21 1:55 ` Paul E. McKenney
2005-06-21 2:29 ` Karim Yaghmour
2005-06-22 1:19 ` Paul E. McKenney
2005-06-22 15:31 ` Karim Yaghmour
2005-06-22 15:27 ` Kristian Benoit
2005-06-22 16:27 ` Paul E. McKenney
2005-06-22 17:20 ` Kristian Benoit
2005-06-22 17:34 ` Ingo Molnar
2005-06-22 17:40 ` Ingo Molnar
2005-06-22 18:12 ` Karim Yaghmour
2005-06-22 18:14 ` Ingo Molnar
2005-06-22 19:04 ` Karim Yaghmour
2005-06-22 18:50 ` Paul E. McKenney
2005-06-22 19:04 ` Ingo Molnar
2005-06-22 20:17 ` Karim Yaghmour
2005-06-22 20:22 ` Ingo Molnar
2005-06-22 21:03 ` Karim Yaghmour
2005-06-22 21:10 ` Ingo Molnar
2005-06-22 21:32 ` Karim Yaghmour
2005-06-22 22:41 ` Ingo Molnar
2005-06-22 23:02 ` Karim Yaghmour
2005-06-22 21:20 ` Paul E. McKenney
2005-06-22 19:08 ` Karim Yaghmour
2005-06-23 14:48 ` Paulo Marques
2005-06-22 17:58 ` Karim Yaghmour
2005-06-22 18:47 ` Paul E. McKenney
2005-06-22 19:16 ` Karim Yaghmour
2005-06-22 21:23 ` Paul E. McKenney [this message]
2005-06-22 17:17 ` Lee Revell
2005-06-22 17:32 ` Karim Yaghmour
2005-06-29 7:43 ` PREEMPT_RT & threading IRQ 0 Ingo Molnar
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