hi all,
I am using red hat AS 4 linux enterprise,i need to run my application such that while its running no other process shuld run all the remaining process should be suspended ,i need to use whole of the process only for that application to run ,can anyone suggest me how to do this.

thanks u all,
lakshmi

That's a bit extreme. Why not just reschedule your app to maximum priority?
Try running your app like:
Or if it's already running, use renice.

To kill every process do To STOP every process you have to send a SIGSTOP. Although that could lead to unstable behavior for some apps.

You cannot do that safely. Some filesystems have daemons and will not work if the daemon is stopped, for example.

In general do not stop all processes, period. redoubtable gave you good advice. Run your app at higher priority. What the heck are you trying to do?

I think on one hand, he's trying to make sure that the application will have enough resources to run, and on the other hand, no other processes would interfere his application's job. But, if that's the case, just stop unused daemons, like - you don't need sendmail running, disable it, you don't need smart daemon, you don't need beagle, hwscanner, etc, etc - disable them. Making sure no other processes is messing around with yours - consider jailed environment, chroot, etc.