[debbugs-tracker] bug#24715: closed (Massive performance regression makes diff unusable)

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Your message dated Tue, 25 Oct 2016 23:13:21 -0700
with message-id <address@hidden>
and subject line Re: [bug-diffutils] bug#24715: Massive performance regression 
makes diff unusable
has caused the debbugs.gnu.org bug report #24715,
regarding Massive performance regression makes diff unusable
to be marked as done.

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24715: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=24715
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> --- Begin Message ---
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> Subject: 
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> Massive performance regression makes diff unusable
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> Date: 
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> Mon, 17 Oct 2016 15:03:05 +0200
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> User-agent: 
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> Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)
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> $ wc tmp.*
>   6712297  27215448 135217073 tmp.1
>   6712247  27215244 135216202 tmp.2
>  13424544  54430692 270433275 total
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> $ diff --version | head -1
> diff (GNU diffutils) 3.3
> $ time diff -u tmp.* > xx
> 17.023user 8.246system 0m25.335selapsed 99.74%CPU
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> $ diff --version | head -1
> diff (GNU diffutils) 3.5
> $ time diff -u tmp.* > yy
> 5020.640user 3.176system 83m50.461selapsed 99.86%CPU
>
> Andreas.
>
> -- 
> Andreas Schwab, SUSE Labs, address@hidden
> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
> "And now for something completely different."
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> --- End Message ---

--- Begin Message --- Subject: Re: [bug-diffutils] bug#24715: Massive performance regression makes diff unusable Date: Tue, 25 Oct 2016 23:13:21 -0700 User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0

Thanks for the test data. I installed a Gnulib patch, noted here:

http://lists.gnu.org/archive/html/bug-gnulib/2016-10/msg00157.html

along with the attached diffutils patches. This fixed the problem for me, so I am closing the bug report.

0001-build-update-gnulib-submodule-to-latest.patch
Description: Text Data

0002-diff-fix-big-performance-degradation-in-3.4.patch
Description: Text Data

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