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view tests/test-rawcommit1.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 7544700fd931
children 9fe62e2db71d
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(the rawcommit command is deprecated)
05f9e54f4c9b86b09099803d8b49a50edcb4eaab 644 a
54837d97f2932a8194e69745a280a2c11e61ff9c 644 b
76d5e637cbec1bcc04a5a3fa4bcc7d13f6847c00 644 c
changeset:   2:e110db3db549
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     2

(the rawcommit command is deprecated)
05f9e54f4c9b86b09099803d8b49a50edcb4eaab 644 a
76d5e637cbec1bcc04a5a3fa4bcc7d13f6847c00 644 c
changeset:   3:0f9843914735
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     3

(the rawcommit command is deprecated)
d6e3c4976c13feb1728cd3ac851abaf7256a5c23 644 a
76d5e637cbec1bcc04a5a3fa4bcc7d13f6847c00 644 c
changeset:   4:909a3d1d3ee1
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     4

(the rawcommit command is deprecated)
05f9e54f4c9b86b09099803d8b49a50edcb4eaab 644 a
54837d97f2932a8194e69745a280a2c11e61ff9c 644 b
3570202ceac2b52517df64ebd0a062cb0d8fe33a 644 c
changeset:   4:909a3d1d3ee1
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     4

(the rawcommit command is deprecated)
d6e3c4976c13feb1728cd3ac851abaf7256a5c23 644 a
76d5e637cbec1bcc04a5a3fa4bcc7d13f6847c00 644 c
changeset:   6:725fdd0728db
tag:         tip
parent:      4:909a3d1d3ee1
parent:      5:f56d4c64ab98
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     6

(the rawcommit command is deprecated)
d6e3c4976c13feb1728cd3ac851abaf7256a5c23 644 a
76d5e637cbec1bcc04a5a3fa4bcc7d13f6847c00 644 c
changeset:   7:2c11b55105cb
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     7