benchmark: shorten pipe-to by reducing number of chunks #49577
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nodejs-github-bot
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Benchmark link (with 2 iterations to see the general time it should take): https://ci.nodejs.org/view/Node.js%20benchmark/job/benchmark-node-micro-benchmarks/1371/ Edit: each combination takes 1 second so it should now take around 15m |
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FWIW you shouldn't always reduce iterations just to make them take less time. In most cases the number of iterations is where it is for a reason, namely because V8 does not optimize code right away (or the opposite: it could eventually deoptimize code for some reason) so you can easily get misleading results if the process does not stay alive long enough. |
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Do you think it's applicable here? Because 2.5 hours is way too long |
I would say it's always applicable because it's not really safe to guess what V8 may or may not do, especially across V8 versions. |
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Landed in 7ad4c0f |
PR-URL: #49577 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Debadree Chatterjee <[email protected]>
PR-URL: nodejs#49577 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Debadree Chatterjee <[email protected]>
(this only now start taking a long time due to #49552)
without this, it takes 2.5 hours with this it should take around 15 minutes:
each iteration (single combination) takes 9 seconds (saw here).
there are 16 possible combinations.
so 9 seconds * 16 combination * 30 default runs * 2 versions = 2 hours and 24 minutes...