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view tests/test-empty-group.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 11422943cf72
children b2d9e553cdc8
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adding init
adding x
adding y
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
adding x
adding y
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
requesting all changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 3 changes to 3 files
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
requesting all changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 3 changes to 3 files
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
searching for changes
changeset:   4:fdb3c546e859
tag:         tip
parent:      1:1f703b3fcbc6
parent:      2:de997049e034
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     m2

searching for changes
changeset:   3:f40f830c0024
parent:      2:de997049e034
parent:      1:1f703b3fcbc6
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     m1

searching for changes
changeset:   3:f40f830c0024
tag:         tip
parent:      2:de997049e034
parent:      1:1f703b3fcbc6
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     m1

searching for changes
changeset:   3:fdb3c546e859
tag:         tip
parent:      1:1f703b3fcbc6
parent:      2:de997049e034
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     m2

pulling from a
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files (+1 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)
pulling from a
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files (+1 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)