Filtered by Tag: CPU options

Repeatable performance tests: CPU options are best disabled

| | performance testing EC2 CPU options performance profiling

In an effort to improve repeatability, the MongoDB Performance team set out to reduce noise on several performance test suites run on EC2 instances. After thinking about our assumptions and the experiment setup, we began by recording data about our current setup and found no evidence of particularly good or bad EC2 instances. In the next step, we investigated IO and found that EBS instances are the stable option for us. Having found a very stable behavior as far as disks were concerned, this third and final experiment turns to tuning CPU related knobs to minimize noise from this part of the system.