Re: Measuring performance of GHC

Joachim Breitner writes:

Hi,

Am Dienstag, den 06.12.2016, 17:14 -0500 schrieb Ben Gamari:

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Joachim Breitner writes:

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Hi,

Am Dienstag, den 06.12.2016, 19:27 +0000 schrieb Michal Terepeta:

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(isn't that's what perf.haskell.org is doing?)

for compiler performance, it only reports the test suite perf test number so far.

If someone modifies the nofib runner to give usable timing results for the compiler, I can easily track these numbers as well.

I have a module [1] that does precisely this for the PITA project (which I still have yet to put up on a public server; I'll try to make time for this soon).

Are you saying that the compile time measurements of a single run of the compiler are actually useful?

Not really, I generally ignore the compile times. However, knowing compiler allocations on a per-module basis is quite nice.

I’d expect we first have to make nofib call the compiler repeatedly.

This would be a good idea though.

Also, shouldn’t this then become part of nofib-analye?

The logic for producing these statistics is implemented by nofib-analyse's Slurp module today. All the script does is produce the statistics in a more consistent format. Cheers, - Ben