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

[Niko Tyni]

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 at debian.org