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annotate tests/test-diffdir @ 2577:fa76c5d609c9

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bdiff: improve worst case behavior by 100x. on 5.8MB (244.000 lines) text file with similar lines, hash before this change made diff against empty file take 75 seconds. this change improves performance to 0.6 seconds. result is that clone of smallish repo (137MB) with some files like this takes 1 minute instead of 10 minutes. common case of diff is 10% slower now, probably because of worse cache locality. but diff does not affect overall performance in common case (less than 1% of runtime is in diff when it is working ok), so this tradeoff looks good.
author Vadim Gelfer <vadim.gelfer@gmail.com>
date Fri, 07 Jul 2006 15:02:55 -0700
parents 7544700fd931
children 096f1c73cdc3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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536
c15b4bc0a11c Refactor diffrevs/diffdir into changes
mpm@selenic.com
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1 #!/bin/sh
c15b4bc0a11c Refactor diffrevs/diffdir into changes
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2
c15b4bc0a11c Refactor diffrevs/diffdir into changes
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3 hg init
c15b4bc0a11c Refactor diffrevs/diffdir into changes
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4 touch a
c15b4bc0a11c Refactor diffrevs/diffdir into changes
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5 hg add a
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7544700fd931 Use 'hg ci -d "1000000 0"' in tests to circumvent problem with leading zero.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 1723
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6 hg ci -m "a" -d "1000000 0"
536
c15b4bc0a11c Refactor diffrevs/diffdir into changes
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7
c15b4bc0a11c Refactor diffrevs/diffdir into changes
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8 echo 123 > b
c15b4bc0a11c Refactor diffrevs/diffdir into changes
mpm@selenic.com
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9 hg add b
949
d997148155f2 test fixes for Solaris 2.6
TK Soh <teekaysoh@yahoo.com>
parents: 814
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10 hg diff | sed -e "s/\(+++ [a-zA-Z0-9_/.-]*\).*/\1/" \
d997148155f2 test fixes for Solaris 2.6
TK Soh <teekaysoh@yahoo.com>
parents: 814
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11 -e "s/\(--- [a-zA-Z0-9_/.-]*\).*/\1/"
536
c15b4bc0a11c Refactor diffrevs/diffdir into changes
mpm@selenic.com
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12
949
d997148155f2 test fixes for Solaris 2.6
TK Soh <teekaysoh@yahoo.com>
parents: 814
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13 hg diff -r tip | sed -e "s/\(+++ [a-zA-Z0-9_/.-]*\).*/\1/" \
d997148155f2 test fixes for Solaris 2.6
TK Soh <teekaysoh@yahoo.com>
parents: 814
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14 -e "s/\(--- [a-zA-Z0-9_/.-]*\).*/\1/"
1723
fde8fb2cbede Fix diff against an empty file (issue124) and add a test for this.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 981
diff changeset
15
fde8fb2cbede Fix diff against an empty file (issue124) and add a test for this.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 981
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16 echo foo > a
fde8fb2cbede Fix diff against an empty file (issue124) and add a test for this.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 981
diff changeset
17 hg diff | sed -e "s/\(+++ [a-zA-Z0-9_/.-]*\).*/\1/" \
fde8fb2cbede Fix diff against an empty file (issue124) and add a test for this.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 981
diff changeset
18 -e "s/\(--- [a-zA-Z0-9_/.-]*\).*/\1/"