problem with Runtime.exec()

[prashanthNair]

I have a process monitoring program in linux which
executes the class through Runtime.exec()
and monitors the status of the child processes
periodically from a Thread.i am looking up
the processes from an rmi registry and will
write the status periodically.


when a "ps -ef | grep java" is done from the
terminal,it was showing 3 process ids.One for
the monitoring Main class,another for rmiregistry
and the third for the program which is being monitored

If i start this monitoring program ,its
observed that the system becomes slow.
I am not able to find out why is this happening
Is it because i am starting another jvm instance?

cheers
prashanth

[William Brogden]

Is it because i am starting another jvm instance?

Starting another jvm instance would only cause a temporary pause.
I suspect your problem lies elsewhere - how frequently does your monitoring program run?
Bill

[Stefan Wagner]

Just by the way:
ps -C java is more efficient than ps -ef | grep java - i.e. the grep java might find itself.

[prashanthNair]

The montoring program will run in a while loop and will check the status every 60 secs

[Bear Bibeault]

"prasanthNair",

There aren't many rules that you need to worry about here on the Ranch, but one that we take very seriously regards the use of proper names. Please take a look at the JavaRanch Naming Policy and adjust your display name to match it.

In particular, your display name must be a first and a last name separated by a space character, and must not be obviously fictitious.

Thanks!
bear
JavaRanch Sheriff