From: Lee Revell <rlrevell@joe-job.com>
To: John Richard Moser <nigelenki@comcast.net>
Cc: Sven-Thorsten Dietrich <sdietrich@mvista.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Alexander Batyrshin <abatyrshin@ru.mvista.com>,
"Amakarov@Ru. Mvista. Com" <amakarov@ru.mvista.com>,
Daniel Walker <dwalker@mvista.com>,
"Eugeny S. Mints" <emints@ru.mvista.com>,
"Ext-Rt-Dev@Mvista. Com" <ext-rt-dev@mvista.com>,
New Zhang Haitao <hzhang@ch.mvista.com>,
"Yyang@Ch. Mvista. Com" <yyang@ch.mvista.com>
Subject: Re: [ANNOUNCE] Linux 2.6 Real Time Kernel
Date: Sun, 10 Oct 2004 13:26:55 -0400 [thread overview]
Message-ID: <1097429214.1427.14.camel@krustophenia.net> (raw)
In-Reply-To: <4169293B.3020502@comcast.net>
On Sun, 2004-10-10 at 08:21, John Richard Moser wrote:
> Does any of this 'work' on x86_64 yet? I heard that Ingo's voluntary
> pre-empt was x86 only and didn't work on amd64; this stuff's kinda new,
> does it work outside x86 yet?
>
> I'd like to see what these kinds of things do. :)
The VP patches currently work on x86, x64, amd64, and ppc AFAIK. As
stated in the docs, the MontaVista stuff is x86 only right now.
My tests show the worst case latency with the MontaVista patches is
about twice that of the VP patches. Probably due to debug overhead and
a bug or two. But, as expected, the average case latency is _much_
better.
Here's the top of the VP histogram, delay is in usecs:
Delay #
0 5764433
1 3154867
2 461521
3 332445
4 403847
5 320120
6 237955
7 152418
8 94274
9 66496
10 52976
11 44605
12 38437
13 31620
14 27816
15 26845
16 23743
17 20648
18 21611
19 24853
20 30352
21 50046
22 101989
23 24843
24 28829
25 56247
26 42408
27 28228
28 20773
29 19521
Here's the top of the Mvista histogram:
Delay #
0 6771692
1 26
2 29
3 12
4 15
5 15
6 15
7 18
8 19
9 10
10 15
11 10
12 19
13 12
14 15
15 11
16 13
17 13
18 11
19 13
20 12
21 9
22 11
23 13
24 17
25 10
26 9
27 11
28 8
29 12
Lee
next prev parent reply other threads:[~2004-10-10 17:32 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-09 5:59 [ANNOUNCE] Linux 2.6 Real Time Kernel Sven-Thorsten Dietrich
2004-10-09 6:40 ` Lee Revell
2004-10-09 7:33 ` Daniel Walker
2004-10-09 7:42 ` Lee Revell
2004-10-09 23:40 ` Matthias Urlichs
2004-10-09 8:52 ` Lee Revell
2004-10-09 23:20 ` Dave Hansen
2004-10-09 23:24 ` Lee Revell
2004-10-09 10:51 ` Måns Rullgård
2004-10-09 13:15 ` Måns Rullgård
2004-10-09 21:20 ` Lee Revell
2004-10-09 21:35 ` Måns Rullgård
2004-10-09 21:37 ` Lee Revell
2004-10-09 21:45 ` Måns Rullgård
2004-10-09 21:55 ` Lee Revell
2004-10-09 22:21 ` Måns Rullgård
2004-10-09 23:52 ` Lee Revell
2004-10-10 0:05 ` Måns Rullgård
2004-10-10 0:45 ` Lee Revell
2004-10-10 1:05 ` Måns Rullgård
2004-10-10 1:09 ` Lee Revell
2004-10-10 0:43 ` Micha Feigin
2004-10-10 1:08 ` Måns Rullgård
2004-10-09 17:41 ` Karim Yaghmour
2004-10-09 18:30 ` Lee Revell
2004-10-09 21:26 ` stefan.eletzhofer
2004-10-09 19:30 ` Lee Revell
2004-10-09 19:38 ` Måns Rullgård
2004-10-09 21:38 ` stefan.eletzhofer
2004-10-09 19:47 ` Lee Revell
2004-10-09 20:11 ` Karim Yaghmour
2004-10-09 20:14 ` Lee Revell
2004-10-09 20:53 ` Karim Yaghmour
2004-10-09 20:59 ` Lee Revell
2004-10-09 20:20 ` Robert Love
2004-10-09 20:25 ` Lee Revell
2004-10-10 1:15 ` Lee Revell
2004-10-10 8:46 ` Ingo Molnar
2004-10-10 19:41 ` Daniel Walker
2004-10-10 19:46 ` Ingo Molnar
2004-10-10 21:20 ` Andrew Morton
2004-10-10 21:59 ` Ingo Molnar
2004-10-11 17:53 ` Daniel Walker
2004-10-11 20:49 ` Ingo Molnar
2004-10-11 21:44 ` Sven Dietrich
2004-10-11 21:54 ` Ingo Molnar
2004-10-11 23:05 ` Sven Dietrich
2004-10-12 5:50 ` Ingo Molnar
2004-10-14 5:09 ` Dipankar Sarma
2004-10-14 7:18 ` Ingo Molnar
2004-10-15 14:59 ` Paul E. McKenney
2004-10-15 15:45 ` Ingo Molnar
2004-10-15 16:40 ` Paul E. McKenney
2004-10-15 16:45 ` Paul E. McKenney
2004-10-17 17:12 ` Ingo Molnar
2004-10-12 18:50 ` Daniel Walker
2004-10-12 19:46 ` [Ext-rt-dev] " Thomas Gleixner
2004-10-12 20:31 ` Sven Dietrich
2004-10-12 20:37 ` Thomas Gleixner
2004-10-13 0:30 ` George Anzinger
2004-10-12 21:12 ` Bill Huey
2004-10-12 21:24 ` Bill Huey
2004-10-12 21:32 ` Thomas Gleixner
2004-10-12 23:13 ` Bill Huey
2004-10-12 21:41 ` Sven Dietrich
2004-10-12 22:57 ` Bill Huey
2004-10-12 23:17 ` Adam Heath
2004-10-12 23:36 ` Lee Revell
2004-10-12 23:25 ` Thomas Gleixner
2004-10-13 2:02 ` K.R. Foley
2004-10-13 13:39 ` Martijn Sipkema
2004-10-13 13:26 ` La Monte H.P. Yarroll
2004-10-13 15:04 ` Martijn Sipkema
2004-10-13 14:55 ` Kurt Wall
2004-10-13 14:52 ` Christoph Hellwig
2004-10-13 15:56 ` Lee Revell
2004-10-13 16:13 ` Robert Love
2004-10-13 17:14 ` Martijn Sipkema
2004-10-13 3:55 ` Bill Huey
2004-10-12 22:00 ` Thomas Gleixner
2004-10-12 22:36 ` Bill Huey
2004-10-12 23:10 ` Thomas Gleixner
2004-10-12 23:33 ` Bill Huey
2004-10-12 23:37 ` Thomas Gleixner
2004-10-12 23:52 ` Bill Huey
2004-10-13 0:59 ` Valdis.Kletnieks
2004-10-10 12:21 ` John Richard Moser
2004-10-10 17:26 ` Lee Revell [this message]
2004-10-10 18:45 ` John Richard Moser
2004-10-10 20:20 ` Ingo Molnar
2004-10-10 20:44 ` John Richard Moser
2004-10-10 17:29 ` Daniel Walker
-- strict thread matches above, loose matches on Subject: below --
2004-10-09 11:38 John Hedditch
2004-10-09 22:54 Sven Dietrich
2004-10-11 15:28 Vadim Lebedev
2004-10-11 15:50 ` Eugeny S. Mints
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