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Published 20 hours ago • verified publisher icon ionspin

[PERF] longValue(exactRequired = true) is very slow

Open glureau opened this issue 8 months ago • 1 comments

Describe the bug No problem with the returned value, but the cost of using exactRequired = true is order of magnitude more costly than using exactRequired = false.

To Reproduce I was working on some load tests on our mathematical library, so a lot of calls were involved (BD creation, addition, multiplication, ...). In my case the BigDecimal was always rounded just before the call to longValue(exactRequired = true).

With the exactRequired = true this test was taking 7.5 minutes, when I just changed the boolean to false, it took 1.4 seconds.

Sorry that's maybe not clear to reproduce, but I believe any attempts should show a similarly high impact. In my case, I'd prefer to use exactRequired = true as I'm actually expecting an exact value, but the performance wasn't explicit.

Platform

  • Reproduced on JVM (maybe other platforms impacted)

glureau avatar Jun 05 '24 17:06 glureau