Re: how to refrain only use certain number of processors

[Chen Wei <weichen302@gmx.com>]

On Mon, Jan 30, 2012 at 06:06:06PM +0800, lina wrote:
> I have a script like
> 
> #!/bin/bash
> for i in {0..108}
> do
> 
> some job will run for mins &
> done
> 
> Here I used & for some kinda of parallel.
> but there is a problem,
> I wished at most it only run 8 jobs simultantly, no more than 8, once
> finished, a new job can continue,
> Some suggestions?

how about instead of one script, running 8 scripts from cron, each has
its own lock file:

------------------------------------
#!/bin/sh
#script no.1

LOCKFILE="$HOME/lockfiles/lock_1"
if [ -f $LOCKFILE ]; then
   exit 1
else
   echo "green light .."
fi

date -u > $LOCKFILE
do something
rm $LOCKFILE
------------------------------------

-- 
Chen Wei