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background problem in while loop

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# 1  
Old 07-06-2005
background problem in while loop
file 005:
trap 'echo "\nInterrupcion recibida.Saliendo\n\n" ; exit 0 ' 2 9 15

while true
do
./005.aux &
done



005.aux:

trap 'exit 0' 2 9 15
sleep 30
exit 0

The error ocurrs if i try to execute 005.aux in background. How could i resolve it? Thanks Smilie
# 2  
Old 07-06-2005
What error occurs? Could you post the exact error message?
# 3  
Old 07-06-2005
this is the message:
"./005.aux: fork: Resource temporarily unavailable"
# 4  
Old 07-06-2005
That loop is attempting to create an infinite number of background jobs. Do you expect it to succeed?
# 5  
Old 07-06-2005
maybe? if it runs in foreground, there is no problem Smilie
so, how could i do for running and exiting 005.aux in bg in each iteration?


sorry.. if i have basic questions
# 6  
Old 07-06-2005
You can't create a new background process which each iteration. You will run out of resources. When you run it in the foreground, you wait for it to finish then create a new process. You can use the wait command to wait for the background process, but what is the point of that?
# 7  
Old 07-06-2005
Here's why it fails in bg:

The while loop can make 300000 in 30 seconds. That's 300000 separate processes all running AT THE SAME TIME. Your system cannot have that many processes going at the same time.

When you run it in fg, it creates one process at a time. One process vs. 300000.

To make it work try something like this
Code:
while true
do
    ./005.aux &
    sleep 30
done
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