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Date:      Sat, 25 Mar 2023 22:05:13 +0000
From:      Jamie Landeg-Jones <jamie@catflap.org>
To:        jamie@catflap.org, freebsd-current@FreeBSD.org
Subject:   Re: diff(1) goes into cpu-hogging endless loop
Message-ID:  <202303252205.32PM5DoW073709@donotpassgo.dyslexicfish.net>
In-Reply-To: <202303252155.32PLtEPF072349@donotpassgo.dyslexicfish.net>
References:  <202303252155.32PLtEPF072349@donotpassgo.dyslexicfish.net>

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Just to add, that whilst the "diff" succeeded with the files
split into 10Mb chunks, the time taken to run was really high, up
to 10 times longer than gnu diff:

+ /usr/bin/time diff 1.aa 2.aa 16.74 real        16.70 user         0.03 sys
+ /usr/bin/time diff 1.ab 2.ab 16.53 real        16.45 user         0.07 sys
+ /usr/bin/time diff 1.ac 2.ac 21.58 real        21.51 user         0.06 sys
+ /usr/bin/time diff 1.ad 2.ad 22.37 real        22.25 user         0.11 sys
+ /usr/bin/time diff 1.ae 2.ae 25.93 real        25.81 user         0.11 sys
+ /usr/bin/time diff 1.af 2.af 26.63 real        26.53 user         0.09 sys
+ /usr/bin/time diff 1.ag 2.ag  0.98 real         0.96 user         0.02 sys

+ /usr/bin/time gdiff 1.aa 2.aa 2.44 real         2.37 user         0.06 sys
+ /usr/bin/time gdiff 1.ab 2.ab 4.09 real         4.06 user         0.03 sys
+ /usr/bin/time gdiff 1.ac 2.ac 2.24 real         2.22 user         0.01 sys
+ /usr/bin/time gdiff 1.ad 2.ad 1.99 real         1.98 user         0.00 sys
+ /usr/bin/time gdiff 1.ae 2.ae 2.63 real         2.60 user         0.02 sys
+ /usr/bin/time gdiff 1.af 2.af 2.62 real         2.59 user         0.03 sys
+ /usr/bin/time gdiff 1.ag 2.ag 0.12 real         0.11 user         0.00 sys




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