primeJava/solution_4 showing about 10 seconds of run time on core2 duo about primes

[rbergen]

@KipRM I understand the apparent discrepancy you're flagging, but as @sonicrules1234 points out, this is actually completely logical as documented in code and README.md. I'm going to close this for that reason.

[sonicrules1234]

If you look in the README.md file you'll see that it says that -warmup tells the program to run the sieve for a few seconds before running the benchmark to warm the JVM. I was surprised at first how long the benchmarks took for the Primes project, but when I started looking at the code, I saw that many of the solutions had more than one algorithm being run. That's not the issue in your case, but just remember to look a little closer next time please.

[KipRM]

I didn't see any way to report an observation. What percent of the audience out there is going to know the warm up will double the time ?
this is ran on a much better machine

Processors:                8
Processor speed:           2.5 GHz
Processor type:            Intel(R) Core(TM) i7-4720HQ CPU @

Tue Dec 14 09:38:58 MST 2021
java -cp src PrimeSieveI32C -warmup
chrvanorleI32C;4586;5.000000;1;algorithm=base,faithful=yes,bits=1
Tue Dec 14 09:38:58 MST 2021  <----Started
09_39_08        <====Finished (10)sec 1639499938 - 1639499948


Tue Dec 14 09:39:08 MST 2021
java -cp src PrimeSieveI32C
chrvanorleI32C;4468;5.001000;1;algorithm=base,faithful=yes,bits=1
Tue Dec 14 09:39:08 MST 2021  <----Started
09_39_14        <====Finished (6)sec 1639499948 - 1639499954

[rbergen]

The README does literally state that "-warmup: Runs the sieve a few seconds to warmup the JVM". I think it makes sense that 5 + "a few seconds" gets you in the 9 to 10 second range.
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Observations can be reported in a Discussion.