Jmap -heap (Tomcat ID) issues

Hello,

I have created a script based off the information jmap -heap (tomcat ID)of OLD gen and Permspace. This scripts runs every minute. Developers at my company believe that Jmap is a cause of recent tomcat hangs. Tomcat is not running out of memory just non responsive. I was wondering how resource intensive jmap -heap really is? ANy know issues of jmap -heap hanging tomcat? My script is a basic script just redirecting the jmap -heap to a file gutting that file for the UESED of old gen and permspace and emailing me if they are at a certian % used.

Thanks

[581 byte] By [gotjavaa] at [2007-11-26 17:30:31]