Did you dial up to run for 1 billion items?
In general I'm not a big fan of JMH for testing sustained I/O scenarios, as CPU, OS and storage behavior are extremely relevant, and JMH tends to interfere with access patterns.
In general I'm not a big fan of JMH for testing sustained I/O scenarios, as CPU, OS and storage behavior are extremely relevant, and JMH tends to interfere with access patterns.