melgenek: minor improvements

[melgenek]

Check List:

• [x] You have run ./mvnw verify and the project builds successfully
• [x] Tests pass (./test.sh <username> shows no differences between expected and actual outputs)
• [x] All formatting changes by the build are committed
• [x] Your launch script is named calculate_average_<username>.sh (make sure to match casing of your GH user name) and is executable
• [x] Output matches that of calculate_average_baseline.sh
• [x] For new entries, or after substantial changes: When implementing custom hash structures, please point to where you deal with hash collisions (line number)

These changes cut ~1s out of 6s in a Lima VM with 8 cores.

[gunnarmorling]

This runs out of heap space for the 10K key set (see _create_measurements_3.sh) when testing with 32 cores:

Terminating due to java.lang.OutOfMemoryError: Java heap space

[melgenek]

Sorry, forgot to make the change to add more memory.

@gunnarmorling I was testing locally only against the 10k dataset. While you're testing 10k anyway, could you please tell me how much time it takes to process 10k on the target machine?

[gunnarmorling]

Looking good now. 00:05.167 now. 00:07.137 for the 10K key set.