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Groups > linux.debian.bugs.dist > #771479

Bug#839600: perl: concatenating string instead of sprintf takes all computation power of server

From Niko Tyni <ntyni@debian.org>
Newsgroups linux.debian.bugs.dist
Subject Bug#839600: perl: concatenating string instead of sprintf takes all computation power of server
Date 2016-10-03 22:30 +0200
Message-ID <soi25-1b8-3@gated-at.bofh.it> (permalink)
References <snShj-11m-31@gated-at.bofh.it> <snUVQ-2Gn-7@gated-at.bofh.it> <snVRT-3e4-7@gated-at.bofh.it> <snWbf-3zE-5@gated-at.bofh.it> <soh62-z2-61@gated-at.bofh.it>
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Control: forwarded -1 https://rt.perl.org/Ticket/Display.html?id=129802

On Mon, Oct 03, 2016 at 10:23:51PM +0300, Niko Tyni wrote:
> On Sun, Oct 02, 2016 at 11:59:12PM +0300, Niko Tyni wrote:
> 
> > It seems to have to do with the size of the input file rather
> > than its contents, but I'm not quite sure yet.
> 
> It looks like none of the gory regexps are necessary to trigger it.

> I'll test/bisect this on upstream code next and try to find out if it's
> really copy-on-write related or something else.

I've bisected that it regressed with 5.19.7, more precisely
 http://perl5.git.perl.org/perl.git/commit/9ffd39ab75dd662df22fcdafbf7f740838acc898

and filed upstream ticket [perl #129802] about it.
-- 
Niko Tyni   ntyni@debian.org

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Thread

Bug#839600: perl: concatenating string instead of sprintf takes all computation power of server Leszek Dubiel <leszek.dubiel@dubielvitrum.pl> - 2016-10-02 19:00 +0200
  Bug#839600: perl: concatenating string instead of sprintf takes all computation power of server Niko Tyni <ntyni@debian.org> - 2016-10-02 21:50 +0200
    Bug#839600: perl: concatenating string instead of sprintf takes all computation power of server gregor herrmann <gregoa@debian.org> - 2016-10-02 22:50 +0200
      Bug#839600: perl: concatenating string instead of sprintf takes all computation power of server Niko Tyni <ntyni@debian.org> - 2016-10-02 23:10 +0200
        Bug#839600: perl: concatenating string instead of sprintf takes all computation power of server gregor herrmann <gregoa@debian.org> - 2016-10-02 23:20 +0200
        Bug#839600: perl: concatenating string instead of sprintf takes all computation power of server Niko Tyni <ntyni@debian.org> - 2016-10-03 21:30 +0200
          Bug#839600: perl: concatenating string instead of sprintf takes all computation power of server Niko Tyni <ntyni@debian.org> - 2016-10-03 22:30 +0200
    Bug#839600: perl: concatenating string instead of sprintf takes all computation power of server Leszek Dubiel <leszek.dubiel@dubielvitrum.pl> - 2016-10-02 23:30 +0200

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