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[rtl] switching pb with release 0.9H
- To: rtl@rtlinux.org
- Subject: [rtl] switching pb with release 0.9H
- From: S ANCELOT <sancelot@usa.net>
- Date: Mon, 11 Jan 1999 14:14:08 +0100
- Organization: MACSOFT SA (http://www.macsoft-sa.com)
1. I wanted to try RT linux 0.9H with linux 2.0.35 but task switching
problem have happened
To perform tests, I installed and boot rtlinux 0.9h on a gateway
p5/90Mhz
I tried frank example : it worked fine.
Then, I modified parallel/sched_toggle.c example program to make a
similar periodic task which must start each 10 ms .
I ran the program and looked at LPT output port with scopemeter to look
at its state :
each 10 ms, my output is changing state : ok
But, when I want to sea what happens with some other functions as disk
access or graphic display ,
my rt task do not follow the timing of 10 ms as expected !!!
if I run X thanks to startx, I can sea the LPT output switch 200 ms
later !! I am no more in a RT context !!!
can somebody tell me if there is something wrong working with RT linux .
Does it mean RT linux can not accomplish this task ?
2.
cat /proc/rtlinux returns following information :
RTLinux release 9G (I think it should be 9H)
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