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Can I use pmap to find out Memory utilization?

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linux-howto

http://unix.stackexchange.com – I want to measure memory utilization of my Apache Server. Can I use pmap command and pass all the process ID of 'httpd' and take that as total utilization ? pmap PID1 PID2 .... It seems that pmap give more info rather than RAM utilization. Any command in Unix/Perl through I get the correct info of memory utilization ? (HowTos)