Re: cyclictest vs. latmus

[Robert Berger <xenomai.list@gmail.com>]

Hi,

Thanks for the explanations and sorry for the late reply.

My comments are inline.

On 07/11/2022 08:32, Philippe Gerum wrote:
> 
> The results are available from [4][5] and [6][7] respectively. To sum
> up, we have ~62 µs worst-case in non-isolated mode, 37 µs when
> isolated. Both figures are in line with the expectations on this SoM.

Yep and this is what I would expect, so most likely something is wrong 
in my configuration ;

> 
> To help figuring out the reason for this behavior with latmus on your
> test board, you may want to share your .config. However, I don't think
> the results you observed with cyclictest are relevant to EVL.
> 

Please note, that I use a multi_v7_defconfig. I guess you use something 
else.

Here[1] you can find the config.gz, which I pulled from the board.

Those are the components I use:

root@multi-v7-ml:~# cat /proc/version
Linux version 5.15.64-evl-student-g96fa4a8fcde6 
(student@HP-ZBook-15-G4-2) (arm-resy-linux-gnueabi-gcc (GCC) 12.2.0, GNU 
ld (GNU Binutils) 2.39.0.20220819) #1 SMP IRQPIPE Fri Nov 4 01:10:57
CET 2022


git show 96fa4a8fcde6d9361777daf05caaa527a44e418e
commit 96fa4a8fcde6d9361777daf05caaa527a44e418e (HEAD -> 
v5.15.64-evl3-rebase_LOCAL)
Author: student <student@ReliableEmbeddedSystems.com>
Date:   Fri Nov 4 01:10:35 2022 +0100

     commit not to be -dirty

diff --git a/arch/arm/configs/multi_v7_defconfig 
b/arch/arm/configs/multi_v7_defconfig
index 33572998dbbe..f770b9681a98 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -1187,3 +1187,8 @@ CONFIG_DEBUG_FS=y
  CONFIG_CHROME_PLATFORMS=y
  CONFIG_CROS_EC=m
  CONFIG_CROS_EC_CHARDEV=m
+CONFIG_DA9062_WATCHDOG=y
+CONFIG_MFD_DA9062=y
+CONFIG_REGULATOR_DA9062=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y

commit 5c75c622911d192dc8c2988679713576cff89d45 (HEAD -> r39_LOCAL, tag: 
r39, origin/next, origin/master, origin/HEAD, master)
Author: Philippe Gerum <rpm@xenomai.org>
Date:   Mon Oct 31 12:16:38 2022 +0100

     libevl r39

     Signed-off-by: Philippe Gerum <rpm@xenomai.org>

[1] 
https://drive.google.com/drive/folders/1yPOiKzfEgyXmdB-y4Pc4EzP15V4OtMyV?usp=sharing

Regards,

Robert

-- 
Robert Berger
Embedded Software Evangelist

Reliable Embedded Systems
Consulting Training Engineering
URL: https://www.reliableembeddedsystems.com

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