[Xenomai-help] LATENCIES > 100 us or CRASH WITH X

[Jean-Luc Pamart <jlpamart@domain.hid>]

Hello

I am a newbie with Xeno. My goal for the beginning of 2007 is to launch 
a project for 4 french studiants : a box with Linux embedded and a usb 
camera. The embedded application will analyse the movies in Real time 
and lead a mobile machine with CAN-BUS.
Now i play with Xeno for my knowledge (without specific hardware) :  a 
little linux installed in a usb key with a little embedded distrib  

- vanilla kernel 2.6.16 with patch for usb [.config is joint]
- Xenomai 2.1.2
- essentially BusyBox
- for xenomai : only "latency" directory and libs in usr/libs
I have checked "SMI woraround" for the kernel.
In BIOS I have UNchecked  "legacy usb".

 
my Desktop PC (a AMD ATHLON) can boot with this little vanilla kernel and
1/ a little embedded distrib of my own

OR

2/ a complete mandrake 9.1 on a partition of a classic hard disk

I have 2 differents problems when I lauch this :

1/ with the linux embedded directories on the usb key
high latency > 100 us are ok ? perhaps usb work is not compatible with RT ?


2/ with the complete mandrake 9.1 :
it crashes X after 1 or few minutes.
What is the relation between X and Xenomai ?
Is Xenomai compatible with X ?


Best Regards
    
joint : the complete list of the directories

	

	
		
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