[Issue 9584] Exceptions in D are ludicrously slow (far worse than Java)

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=9584


bearophile_hugs at eml.cc changed:

           What    |Removed                     |Added
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                 CC|                            |bearophile_hugs at eml.cc


--- Comment #1 from bearophile_hugs at eml.cc 2013-02-24 16:35:02 PST ---
> So, I think that it's clear that we need to take steps to improve the
> performance of throwing and catching exceptions.

I agree.

My timings on Windows 32 bit:

D (latest DMD, -O -release -inline -noboundscheck):

1542590
154 ms and 259 us

69839
6 ms, 983 us, and 9 hnsecs

69741
6 ms, 974 us, and 1 hnsec

70468
7 ms, 46 us, and 8 hnsecs

70793
7 ms, 79 us, and 3 hnsecs

70539
7 ms, 53 us, and 9 hnsecs

69626
6 ms, 962 us, and 6 hnsecs


Java (version 1.7.0_13), same system:

260
0ms 26us 0hnsecs

243
0ms 24us 3hnsecs

241
0ms 24us 1hnsecs

241
0ms 24us 1hnsecs

235
0ms 23us 5hnsecs

231
0ms 23us 1hnsecs

250
0ms 25us 0hnsecs

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