Scripts to determine memory usage in AIX boxes. I use there for monitoring Application Server processes (Java), to get a better idea about how much of the resources are utilized by servers. svmon, used like this, does not take into account memory used as file system buffer, so gives a better idea compared to topas.

svmon_servers.sh

# memory usage for all active processes
svmon -P

# same as above, one line for each process
svmon -P -O summary=basic,unit=MB

# Total memory used and total number of  processes
svmon -P -O summary=basic,unit=KB | tail +4 | awk '// {total+=$3} END {print "total mem=",total/1024/1024," GB, n=",NR}'

# Total memory used and total number of processes for Java processes only
svmon -P -O summary=basic,unit=KB | tail +4 | awk '/java/ {total+=$3;count++} END {print "total mem (java)=",total/1024/1024," GB, n(java)=",count}'

# Total memory used and total number of all processes, and respectively Java processes in paranthesis
# Sample output:
# mem: 21.4602 ( 8.30313 ), n: 178 ( 11 )
# this means total memory used is 21GB, 8.3GB of which is consumed by Java processes. There are a total of 178 processes, 11 of which are Java.
svmon -P -O summary=basic,unit=KB | tail +4 | awk '// {total+=$3} /java/ {jtotal+=$3;count++;} END {print "mem:",total/1024/1024,"(",jtotal/1024/1024,"), n:", NR, "(",count,")\n"}'