Running command simultaneously, please help 3

[h3nd]

Hi guys,

I really need a favour here.
Currently I have 4 CPUs in my server,

I need to load the 144 data, if I load the data sequencially. It takes about 2.5 hours which is not good.

So I need to load the data 3 data at a time assign to each CPU,

Here's roughly my script atm :

for file in `ls`
do
    [load command] $file > log$file
done

what I want is roughly like this

for file in `ls`
do
  [load command] $file > log$file & [load command] $file > log$file & [load command] $file > log$file
done

And I need that 3 loading working independently, so whenever loading finish it doesnt have to wait for other to finish but continue loading the next one.

Can you guys shed some light here ?

Any input will be much appreciated.

 

[Annihilannic]

No, the wait command will simply wait for all background processes running under the current shell to end.

Your code looks okay to me, it must be a problem matching the correct processes in the ps listing? Why not add, for example ps -fu adm | grep "loadcommand" | grep "market" inside the until loop as well so you can see from the output which processes it is matching (or not matching)?

Annihilannic.

 

[h3nd]

Thanks Anni,

But dont worry then, I run out the time to test it ..

If I use this script to load it takes 27 mnts.
But if I use wait it loads around 51 mts.

So, there's something wrong with that matching command...

Anyway, could you please help me in my new thread thanks ...