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Welcome to the main channel on the development of MoarVM, a virtual machine for NQP and Rakudo (moarvm.org). This channel is being logged for historical purposes. Set by lizmat on 24 May 2021. |
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| MasterDuke | hm, i haven't been able to construct an example that behaves differently without the try | 14:32 | |
| timo: think you could make some more updated appimages? | 14:34 | ||
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| MasterDuke | well, at least for this example i'm working with, it looks like it's not too hard to gen better code in Actions.nqp | 16:37 | |
| not as big of a run-time difference as i'd hoped though | 16:57 | ||
| m: my $t = ("errors.md.tmpl" xx 1_000).join(" foo "); my $page; my $s = now; for ^1_000 { $page = $t.clone; $page ~~ s:g[ "foo" ] = "a" }; say now - $s; # locally this drops from ~2.60s to ~2.26s | 17:04 | ||
| camelia | 2.681882169 | ||
| MasterDuke | now down to ~2.1s | 17:15 | |
| m: my $t = ("errors.md.tmpl" xx 5).join(" foo "); my $page; my $s = now; for ^10_000 { $page = $t.clone; $page ~~ s:g[ "foo" ] = "a" }; say now - $s; # and this drops from ~0.48s to ~0.44s | 17:20 | ||
| camelia | 0.416483535 | ||
| MasterDuke | though that's with a fast path added to !APPLY-MATCHES | 17:23 | |
| ~2.03s with a slightly faster fast path | 17:33 | ||
| though i would like to know why that assignment has to happen in the loop and can't just be done at the end | 17:35 | ||
| [Coke] | so, not a lot of luck trying to golf my malloc issue; any other suggestions? Reducing nursery size, maybe? | 17:43 | |
| MasterDuke | you turned on MVM_GC_DEBUG? | 17:44 | |
| if so, then yeah, reducing the nursery might help. dogbert17 might have some other suggestions | 17:47 | ||
| afk for dinner, etc. | |||
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| [Coke] | ... oh. MVM_GC_DEBUG isn't an env var, is it | 18:19 | |
| re-re-re-compiling. :) | 18:26 | ||
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| [Coke] | I assume I can tell it's working because it's sooooo sloooow now. :) | 18:40 | |
| (maybe I shouldn't have jumped from 0 to 3) | 18:50 | ||
| dogbert17 | MVM_GC_DEBUG=3 is by far the slowest setting | 18:55 | |
| most of the time I tend to use MVM_GC_DEBUG=1 and a nursery size of a few kilobytes | 18:57 | ||
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| MasterDuke | huh, i've run into this from time to time, but why aren't private multi-methods supported? | 21:37 | |
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| [Coke] | ... crap. the debug run just finished. no output, nothing. | 22:30 | |
| (just the one line I've come to expect from the broken run) | |||
| Was I supposed to attach a debugger or something? | |||
| MasterDuke | the un-golfed version that you expected to fail? | ||
| [Coke] | y | 22:32 | |
| yes | |||
| I think I assumed I'd get debug output or a new failure mode or something. my bad, should have checked first. | 22:33 | ||
| MasterDuke | huh. MVM_SPESH_NODELAY=1 and/or MVM_SPESH_BLOCKING=1 changed anything? | 22:34 | |
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| MasterDuke | m: my $m = ("a " x 1_000) ~~ m:g/\w/; my int $a = 0; my $s = now; for ^10_000 { $a++ for flat $m }; say now - $s; say $a | 22:36 | |
| camelia | 0.938690274 10000000 |
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| MasterDuke | m: my $m = ("a " x 1_000) ~~ m:g/\w/; my int $a = 0; my $s = now; for ^10_000 { $a++ for @$m }; say now - $s; say $a | ||
| camelia | 0.206832283 10000000 |
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| MasterDuke | m: my $m = ("a " x 1_000) ~~ m:g/\w/; my int $a = 0; my $s = now; for ^10_000 { $a++ for $m.list }; say now - $s; say $a | 22:37 | |
| camelia | 0.211387123 10000000 |
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| MasterDuke | i thought `.list` instead of `flat` would be a nice change here github.com/rakudo/rakudo/pull/4807...4804R1814, but instead i get an error that i have no idea why it's happening | 22:38 | |
| during installation too, not while compiling rakudo | 22:44 | ||
| gist.github.com/MasterDuke17/e945b...5455dc5e48 if anyone is curious | 22:52 | ||
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