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Benchmark shall loop correctly #7781

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merged 1 commit into from
Sep 11, 2023

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JaroslavTulach
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@JaroslavTulach JaroslavTulach commented Sep 11, 2023

Pull Request Description

Many ListBenchmarks were wrong. They were looping to sum instead of sum_xyz. Expect regressions, but more truthful results.

Checklist

Please ensure that the following checklist has been satisfied before submitting the PR:

  • All code follows the
    Java,
  • All code has been tested:

@JaroslavTulach JaroslavTulach added the CI: No changelog needed Do not require a changelog entry for this PR. label Sep 11, 2023
@JaroslavTulach JaroslavTulach self-assigned this Sep 11, 2023
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Nice observation. I haven't noticed that at all. By the way, this is precisely the use-case, where versioning of benchmarks (mentioned in #5714) would be beneficial.

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Nice observation. I haven't noticed that at all. By the way, this is precisely the use-case, where versioning of benchmarks (mentioned in #5714) would be beneficial.

At the end the slowdown doesn't seem that bad.
ListBenchmarks.pdf
We don't need to rename then as the result seem to be similar.

Maybe I skewed measurements on my local computer earlier today.


sum_multi list (acc:Text|Decimal|Integer|Any) =
case list of
Nil -> acc
Cons x xs -> @Tail_Call sum xs acc+x
Cons x xs -> @Tail_Call sum_multi xs acc+x
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Bench runs in between 140-150ms per operation.


sum_int list (acc:Integer) =
case list of
Nil -> acc
Cons x xs -> @Tail_Call sum xs acc+x
Cons x xs -> @Tail_Call sum_int xs acc+x
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Bench runs in between 140-150ms per operation.

@@ -104,17 +104,17 @@ sum_conv list (acc:V) =
sum_any list (acc:Any) =
case list of
Nil -> acc
Cons x xs -> @Tail_Call sum xs acc+x
Cons x xs -> @Tail_Call sum_any xs acc+x
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Bench runs in between 140-150ms per operation.

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ListBenchmarks_mapOverList also runs in between 140-150ms. Let's integrate.

@JaroslavTulach JaroslavTulach merged commit a42850f into develop Sep 11, 2023
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@JaroslavTulach JaroslavTulach deleted the wip/jtulach/LoopCorrectlyBenchmark branch September 11, 2023 12:04
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3 participants