Performance improvements to the name equality check when finding a repository index.

[jonathan-aotearoa]

Check List:

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

• Execution time:
• Execution time of reference implementation:

[jonathan-aotearoa]

See line 544 for relevant changes

[gunnarmorling]

I'm afraid that this is not valid, as it isn't guaranteed to resolve all potential conflicts.

[gunnarmorling]

A tad slower actually than before:

Benchmark 1: timeout -v 300 ./calculate_average_jonathan-aotearoa.sh 2>&1
Time (mean ± σ): 5.103 s ± 0.015 s [User: 32.934 s, System: 0.715 s]
Range (min … max): 5.091 s … 5.128 s 5 runs

Summary
jonathan-aotearoa: trimmed mean 5.098993353046667, raw times 5.09063945838,5.09602143738,5.10543017038,5.09552845138,5.128256689380001

Leaderboard
grep: ./src/main/java*/dev/morling/onebrc/CalculateAverage_jonathan-aotearoa.java: No such file or directory

#	Result (m:s.ms)	Implementation	JDK	Submitter	Notes
	00:05.098	link	21.0.2-graal	Jonathan Wright	GraalVM native binary

[jonathan-aotearoa]

I did some benchmarking on that method and the results weren't conclusive, so I'm not entirely surprised to see it ran fractionally slower. The issue I'm finding with micro-benchmarking methods in isolation is that the results don't always apply when the method is run in the context of the whole application. It's a great learning experience though. I haven't had an excuse to dive into Linux tools like perf before :)

[gunnarmorling]

Nice to hear :) Wanna close this one then?

[gunnarmorling]

Hey @jonathan-aotearoa, I am gonna close this one, as we're after the cut-off time, and this one didn't yield an improvement. Thanks a lot for participating in 1BRC!

[jonathan-aotearoa]

Hey @jonathan-aotearoa, I am gonna close this one, as we're after the cut-off time, and this one didn't yield an improvement. Thanks a lot for participating in 1BRC!

Hi @gunnarmorling, thanks for closing the issue, and thanks again for taking the time to setup and and administer this challenge. Very much appreciated.