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m:i// on large chunk of text uses up huge amounts of RAM #5548

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p6rt opened this issue Aug 8, 2016 · 5 comments
Closed

m:i// on large chunk of text uses up huge amounts of RAM #5548

p6rt opened this issue Aug 8, 2016 · 5 comments
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perf regex Regular expressions, pattern matching, user-defined grammars, tokens and rules

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@p6rt
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p6rt commented Aug 8, 2016

Migrated from rt.perl.org#128873 (status was 'resolved')

Searchable as RT128873$
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p6rt commented Aug 8, 2016

From @zoffixznet

See the attached file or the same file in this gist​: https://gist.github.com/zoffixznet/df3287bcd6baf7e83ad8b6fad16b146e

When run, it consumed 4GB of RAM, before I forcefully killed it.

If the :i flag is removed from m​:i// then the match returns fast and does not consume a lot of RAM.

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p6rt commented Aug 8, 2016

From @zoffixznet

log.p6

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p6rt commented Mar 5, 2017

From @MasterDuke17

On Mon, 08 Aug 2016 09​:35​:06 -0700, cpan@​zoffix.com wrote​:

See the attached file or the same file in this gist​:
https://gist.github.com/zoffixznet/df3287bcd6baf7e83ad8b6fad16b146e

When run, it consumed 4GB of RAM, before I forcefully killed it.

If the :i flag is removed from m​:i// then the match returns fast and
does not consume a lot of RAM.

I don't see this behavior now.

This is Rakudo version 2017.02-167-ge114d5204 built on MoarVM version 2017.02-24-gd9e0b4e2

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p6rt commented Mar 5, 2017

The RT System itself - Status changed from 'new' to 'open'

@p6rt p6rt closed this as completed Mar 5, 2017
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p6rt commented Mar 5, 2017

@zoffixznet - Status changed from 'open' to 'resolved'

@p6rt p6rt added perf regex Regular expressions, pattern matching, user-defined grammars, tokens and rules labels Jan 5, 2020
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