ticksize and timer_create()

Hi…

i have the follow problem:

my requirements:

  • x86 computer 400 MHz
  • QNX 6.2 (momentics)

now, i change the ticksize from 1 milli to 0.01 milli., the smallest
ticksize, and i
have create a timer for impulse. so the timer should be give one impulse
per
0,01 milli seconds.
my problem is, when i use this timer my computer crashed very often!!!
is reason for this problem that the ticksize is to small or the timerimpulse
is to small??
when i change the timer interval to 20 micro or 30 micro the computer
crashed!

my target is, to trigger a muliti I/O-card in realtime with the impulse
from the timer!!

where is the problem?

can someone help me???

thanks :slight_smile:

S. Kehrein

“stefan” <stefankehrein@lycos.de> wrote in message
news:aq9aku$3rt$1@inn.qnx.com

Hi…

i have the follow problem:

my requirements:

  • x86 computer 400 MHz
  • QNX 6.2 (momentics)

now, i change the ticksize from 1 milli to 0.01 milli., the smallest
ticksize, and i
have create a timer for impulse. so the timer should be give one impulse
per
0,01 milli seconds.
my problem is, when i use this timer my computer crashed very often!!!
is reason for this problem that the ticksize is to small or the
timerimpulse
is to small??
when i change the timer interval to 20 micro or 30 micro the computer
crashed!

10 us that means 100000 hardware interrupt per seconds. IMHO that’s too
much for a 400Mzh machine.

my target is, to trigger a muliti I/O-card in realtime with the impulse
from the timer!!

where is the problem?

can someone help me???

thanks > :slight_smile:

S. Kehrein