* [ANNOUNCE] LTT 0.9.6pre2: Per-CPU buffers, TSC timestamps, etc.
@ 2002-10-18 3:50 Karim Yaghmour
2002-10-18 16:00 ` [ltt-dev] " Takeharu Kato
2002-10-18 18:32 ` Frank Rowand
0 siblings, 2 replies; 6+ messages in thread
From: Karim Yaghmour @ 2002-10-18 3:50 UTC (permalink / raw)
To: linux-kernel; +Cc: LTT-Dev
A new development version of LTT is now available, 0.9.6pre2.
Here's what's new:
- Per-CPU buffering
- TSC timestamping
- Use of syscall interface instead of char dev abstraction
The release includes a patch for 2.5.43 which is pretty much ready
for inclusion. I will be posting this patch raw ot the LKML with
a more verbose description.
You will find 0.9.6pre2 here:
http://www.opersys.com/ftp/pub/LTT/
LTT's web site is here:
http://www.opersys.com/LTT
Karim
===================================================
Karim Yaghmour
karim@opersys.com
Embedded and Real-Time Linux Expert
===================================================
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ltt-dev] [ANNOUNCE] LTT 0.9.6pre2: Per-CPU buffers, TSC timestamps, etc.
2002-10-18 3:50 [ANNOUNCE] LTT 0.9.6pre2: Per-CPU buffers, TSC timestamps, etc Karim Yaghmour
@ 2002-10-18 16:00 ` Takeharu Kato
2002-10-18 16:19 ` Karim Yaghmour
2002-10-18 18:32 ` Frank Rowand
1 sibling, 1 reply; 6+ messages in thread
From: Takeharu Kato @ 2002-10-18 16:00 UTC (permalink / raw)
To: karim; +Cc: linux-kernel, LTT-Dev
Dear Yaghmour:
Karim Yaghmour wrote:
>
> A new development version of LTT is now available, 0.9.6pre2.
> Here's what's new:
> - Per-CPU buffering
> - TSC timestamping
> - Use of syscall interface instead of char dev abstraction
>
As long as I think, 0.9.6pre2 has called CHAR DEV in LibUserTrace.
Should I apply the patch which you send before?
--
---------------------------
Takeharu KATO
E-mail: tk1219@alles.or.jp
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ltt-dev] [ANNOUNCE] LTT 0.9.6pre2: Per-CPU buffers, TSC timestamps, etc.
2002-10-18 16:00 ` [ltt-dev] " Takeharu Kato
@ 2002-10-18 16:19 ` Karim Yaghmour
2002-10-18 16:20 ` Takeharu Kato
0 siblings, 1 reply; 6+ messages in thread
From: Karim Yaghmour @ 2002-10-18 16:19 UTC (permalink / raw)
To: Takeharu Kato; +Cc: linux-kernel, LTT-Dev
Takeharu Kato wrote:
> Karim Yaghmour wrote:
> >
> > A new development version of LTT is now available, 0.9.6pre2.
> > Here's what's new:
> > - Per-CPU buffering
> > - TSC timestamping
> > - Use of syscall interface instead of char dev abstraction
> >
> As long as I think, 0.9.6pre2 has called CHAR DEV in LibUserTrace.
> Should I apply the patch which you send before?
0.9.6pre2 is a development version, it's expected to have rough
spots. If you need a stable version use 0.9.5a. That said, yes
LibUserTrace hasn't been modified yet for the syscall interface,
but this is really a minor issue which will be fixed.
Karim
===================================================
Karim Yaghmour
karim@opersys.com
Embedded and Real-Time Linux Expert
===================================================
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ltt-dev] [ANNOUNCE] LTT 0.9.6pre2: Per-CPU buffers, TSC timestamps, etc.
2002-10-18 16:19 ` Karim Yaghmour
@ 2002-10-18 16:20 ` Takeharu Kato
0 siblings, 0 replies; 6+ messages in thread
From: Takeharu Kato @ 2002-10-18 16:20 UTC (permalink / raw)
To: karim; +Cc: linux-kernel, LTT-Dev
Dear Yaghmour:
Thank you for your quick response.
> 0.9.6pre2 is a development version, it's expected to have rough
> spots. If you need a stable version use 0.9.5a. That said, yes
> LibUserTrace hasn't been modified yet for the syscall interface,
> but this is really a minor issue which will be fixed.
>
I see.
I tried to compile the tarcedaemon
with UserTrace.c which you sent before, and
it work properly.
--
---------------------------
Takeharu KATO
E-mail: tk1219@alles.or.jp
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ltt-dev] [ANNOUNCE] LTT 0.9.6pre2: Per-CPU buffers, TSC timestamps, etc.
2002-10-18 3:50 [ANNOUNCE] LTT 0.9.6pre2: Per-CPU buffers, TSC timestamps, etc Karim Yaghmour
2002-10-18 16:00 ` [ltt-dev] " Takeharu Kato
@ 2002-10-18 18:32 ` Frank Rowand
2002-10-18 19:00 ` Karim Yaghmour
1 sibling, 1 reply; 6+ messages in thread
From: Frank Rowand @ 2002-10-18 18:32 UTC (permalink / raw)
To: karim; +Cc: linux-kernel, LTT-Dev
Karim Yaghmour wrote:
>
> A new development version of LTT is now available, 0.9.6pre2.
> Here's what's new:
> - Per-CPU buffering
> - TSC timestamping
> - Use of syscall interface instead of char dev abstraction
>
> The release includes a patch for 2.5.43 which is pretty much ready
> for inclusion. I will be posting this patch raw ot the LKML with
> a more verbose description.
>
> You will find 0.9.6pre2 here:
> http://www.opersys.com/ftp/pub/LTT/
I noticed that the Linux 2.4.19 patch is not carried forward from
pre1 to pre2. Are you planning to no longer maintain support for
LTT in the Linux 2.4 line?
-Frank
--
Frank Rowand <frank_rowand@mvista.com>
MontaVista Software, Inc
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ltt-dev] [ANNOUNCE] LTT 0.9.6pre2: Per-CPU buffers, TSC timestamps, etc.
2002-10-18 18:32 ` Frank Rowand
@ 2002-10-18 19:00 ` Karim Yaghmour
0 siblings, 0 replies; 6+ messages in thread
From: Karim Yaghmour @ 2002-10-18 19:00 UTC (permalink / raw)
To: frowand; +Cc: linux-kernel, LTT-Dev
Frank Rowand wrote:
> I noticed that the Linux 2.4.19 patch is not carried forward from
> pre1 to pre2. Are you planning to no longer maintain support for
> LTT in the Linux 2.4 line?
The problem is that the kernel patch is highly dependent on the kernel's
own development. The tracing infrastructure has to change as the kernel
changes. Incidently, the user tools also have to change to accomodate
the newer kernels. There's a point where keeping compatibility with
older kernels becomes increasingly difficult and would entail one of
two things:
- Burden the user tools with legacy support.
- Backport all new features to older kernels.
Neither of these is really interesting. Of course, if someone wants to
take the time to backport some of the new features to older kernels
I would gladly publish their patch with the tools. The time it takes
to work out an LTT patch is non-negligeable and I don't have the
bandwidth to maintain multiple kernel patches in parallel. This is
why I'm concentrating on getting LTT to work with the latest and
greatest.
Obviously things will be much simpler once the LTT patch is included
in the kernel.
Karim
===================================================
Karim Yaghmour
karim@opersys.com
Embedded and Real-Time Linux Expert
===================================================
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2002-10-18 18:51 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2002-10-18 3:50 [ANNOUNCE] LTT 0.9.6pre2: Per-CPU buffers, TSC timestamps, etc Karim Yaghmour
2002-10-18 16:00 ` [ltt-dev] " Takeharu Kato
2002-10-18 16:19 ` Karim Yaghmour
2002-10-18 16:20 ` Takeharu Kato
2002-10-18 18:32 ` Frank Rowand
2002-10-18 19:00 ` Karim Yaghmour
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