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view tests/test-copy2.out @ 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 19b048da4da9
children f4dece0f7016
line wrap: on
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# should show copy
copy: foo -> bar
# shouldn't show copy
# should match
   rev    offset  length   base linkrev nodeid       p1           p2
     0         0       5      0       0 2ed2a3912a0b 000000000000 000000000000
renamed from foo:2ed2a3912a0b24502043eae84ee4b279c18b90dd
# should not be renamed
not renamed
# should show copy
copy: foo -> bar
# should show no parents for tip
   rev    offset  length   base linkrev nodeid       p1           p2
     0         0      69      0       1 6ca237634e1f 000000000000 000000000000
     1        69       6      1       2 7a1ff8e75f5b 6ca237634e1f 000000000000
     2        75      82      1       3 243dfe60f3d9 000000000000 000000000000
# should match
   rev    offset  length   base linkrev nodeid       p1           p2
     0         0       5      0       0 2ed2a3912a0b 000000000000 000000000000
     1         5       7      1       2 dd12c926cf16 2ed2a3912a0b 000000000000
renamed from foo:dd12c926cf165e3eb4cf87b084955cb617221c17
# should show no copies