Report for a 16 MB remote copy
The following example illustrates a report that was generated (on a client machine) by running the rmss command on a command that copied a 16 MB file from a remote (server) machine through NFS.
Hostname: aixhost2.austin.ibm.com
Real memory size: 48.00 Mb
Time of day: Mon Mar 22 18:16:42 2004
Command: cp /mnt/a16Mfile /dev/null
Simulated memory size initialized to 48.00 Mb.
Number of iterations per memory size = 1 warm-up + 4 measured = 5.
Memory size Avg. Pageins Avg. Response Time Avg. Pagein Rate
(megabytes) (sec.) (pageins / sec.)
-----------------------------------------------------------------
48.00 0.0 2.7 0.0
40.00 0.0 2.7 0.0
32.00 0.0 2.7 0.0
24.00 1520.8 26.9 56.6
16.00 4104.2 67.5 60.8
8.00 4106.8 66.9 61.4The response time and page-in rate in this report start relatively low, rapidly increase at a memory size of 24 MB, and then reach a plateau at 16 and 8 MB. This report shows the importance of choosing a wide range of memory sizes when you use the rmss command. If this user had only looked at memory sizes from 24 MB to 8 MB, he or she might have missed an opportunity to configure the system with enough memory to accommodate the application without page-ins.