Guidelines to consider when using the rmss command
No matter which rmss invocation style you are using, it is important to re-create the end-user environment as closely as possible.
For instance, are you using the same model CPU, the same model disks, the same network? Will the users have application files mounted from a remote node via NFS or some other distributed file system? This last point is particularly important, because pages from remote files are treated differently by the VMM than pages from local files.
Likewise, it is best to eliminate any system activity that is not related
to the desired system configuration or the application you are measuring.
For instance, you do not want to have people working on the same machine as
the rmss command unless they are running part of the workload
you are measuring.
Note: You cannot run multiple invocations of the rmss command
simultaneously.
When you have completed all runs of the rmss command, it is best to shut down and reboot the system. This will remove all changes that the rmss command has made to the system and will restore the VMM memory load control parameters to their typical settings.