Add more CPU threads
Another way to get a large system to work harder is to add more worker threads to IPA. By default, IPA node has only two threads. These threads run in parallel with each thread, processing one workunit at a time. This means IPA will process two workunits in parallel. If one of those workunits complete, it will then pick up the next workunit, but only two workunits will be actively processing at any given time. You can change this setting in the IPA Configuration Parameters stored in the gen data area. It is recommended to set this equal to the number of cores you have in your system as base setting, then increase the setting as you test to find the optimal setting for your environment. Testing should be done with the maximum load on the system to see how many threads are needed to achieve the optimal performance.