Time for another try, this time with perf

[royvanrijn]

Started running perf, perhaps this helps. No idea how to use it yet; but I guess lower is better and hope for the best?

Line numbers for hash collisions: 388 onwards, the matchers* methods.

Check List:

• 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:

[gunnarmorling]

Nice! Triple-shared 3rd place now!

Benchmark 1: timeout -v 300 ./calculate_average_royvanrijn.sh 2>&1
  Time (mean ± σ):      2.571 s ±  0.023 s    [User: 17.311 s, System: 0.753 s]
  Range (min … max):    2.535 s …  2.608 s    10 runs

Summary
  royvanrijn: trimmed mean 2.571436178635, raw times 2.55616404126,2.54775638326,2.5975356672600003,2.5718475612600002,2.5348511522600004,2.60803711526,2.55915286826,2.57750082626,2.57017819426,2.59135388726

Leaderboard

| # | Result (m:s.ms) | Implementation     | JDK | Submitter     | Notes     |
|---|-----------------|--------------------|-----|---------------|-----------|
|   | 00:02.571 | [link](https://github.com/gunnarmorling/1brc/blob/main/src/main/java/dev/morling/onebrc/CalculateAverage_royvanrijn.java)| 21.0.1-graal | [Roy van Rijn](https://github.com/royvanrijn) | GraalVM native binary |