BSO Agg Times Drastically Increases After Increasing CPU

Question

Hello All,
I will make a long story short and then explain more if you guys need more information.
We are running 11.1.1.3 64-bit Essbase with 1 Planning application.
We were running load tests with 150 users, where users are running an Aggregation Business Rule. The Business Rule would run in about 7 seconds until all 150 users were in the system. Once the users were loaded the Agg Times increased to about a minute and eventually were timing out. At this point, the Essbase server had 16GB RAM and 4CPU, and the CPU's were pegging at 100%.
We increased CPU count to 8, and now we can not get the Agg to run in less than two minutes. We did not change any of the Config settings, but could not get back to the original performance.
We then tried tweaking the CFG, such as enabling CALCPARALLEL 7, but this seems to have no affect.
This is a very small BSO app at this point,.
Any Ideas?
Thanks,
Nick

Answer 1

What are the test parameters for your 150 users e.g. how frequently does a given "user" perform an action? How are these actions unique per user e.g. is each user user a specific entity, department, or other member in their rule? Please provide as much detail as you can about how the users is simulated and what calculations are running.
Testing when performed improperly or simulating a behavior that makes no sense e.g. running an aggregation that is on the same exact data set will run very poorly. For example Essbase has a lock timeout and if you run say the exact same calculation which has an aggregation that takes 20 seconds and you run that 3 times with a 2 second lag between the executions that locking behavior will kick in and all three calculations which are competing for the same blocks will now run in a very very much slower time frame.
Regards,
John A. Booth
http://www.metavero.com