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speed up hg log --patch Changing dodiff to read the manifest/changelog for node1 before calling repo.update allows us to take advantage of the revlog revision cache. Before this patch and my previous "speed up hg log --debug" patch, when using hg log -p to display three revisions (A, B and C), dodiff and repo.changes would end up reading the manifests in this order: B A B A C B C B With both patches, this order becomes: A A B B B B C C (This considers only dodiff and repo.changes. I'm not sure how other parts of hg log enter the picture.) The speed up will depend on the revisions being displayed. (All "before" times already have my previous "speed up hg log --debug" patch applied.) hg repo (tip = 414e81ae971f). hg log -p before after real 0m50.981s 0m45.279s user 0m47.930s 0m42.560s sys 0m2.526s 0m2.523s output size: 6917897 bytes kernel repo (tip = 9d4e135960ed). hg log -p -l64 before after real 2m14.995s 1m45.025s user 2m9.509s 1m33.900s sys 0m3.663s 0m2.942s output size: 31497621 bytes same kernel repo. hg log -p -l64 -r c84c2069592f:0 before after real 1m48.045s 1m0.076s user 1m44.094s 0m58.492s sys 0m2.603s 0m1.103s output size: 197983 bytes c84c2069592f was the tip of a 10 day old kernel repo that I had lying around and was where I first tested this patch. For some weird coincidence it's also a place where the patch makes a huge difference.
author Alexis S. L. Carvalho <alexis@cecm.usp.br>
date Sun, 26 Feb 2006 02:26:17 +0100
parents 91c56c427171
children 64df4220b349
line wrap: on
line source

# rename a single file
A d2/c
R d1/d11/a1
# rename --after a single file
A d2/c
R d1/d11/a1
# move a single file to an existing directory
A d2/a1
R d1/d11/a1
# move --after a single file to an existing directory
A d2/a1
R d1/d11/a1
# rename a file using a relative path
A d1/d11/e
R d2/b
# rename --after a file using a relative path
A d1/d11/e
R d2/b
# rename directory d1 as d3
copying d1/a to d3/a
copying d1/b to d3/b
copying d1/ba to d3/ba
copying d1/d11/a1 to d3/d11/a1
removing d1/a
removing d1/b
removing d1/ba
removing d1/d11/a1
A d3/a
A d3/b
A d3/ba
A d3/d11/a1
R d1/a
R d1/b
R d1/ba
R d1/d11/a1
# rename --after directory d1 as d3
copying d1/a to d3/a
copying d1/b to d3/b
copying d1/ba to d3/ba
copying d1/d11/a1 to d3/d11/a1
removing d1/a
removing d1/b
removing d1/ba
removing d1/d11/a1
A d3/a
A d3/b
A d3/ba
A d3/d11/a1
R d1/a
R d1/b
R d1/ba
R d1/d11/a1
# move a directory using a relative path
copying ../d1/d11/a1 to d3/d11/a1
removing ../d1/d11/a1
A d2/d3/d11/a1
R d1/d11/a1
# move --after a directory using a relative path
copying ../d1/d11/a1 to d3/d11/a1
removing ../d1/d11/a1
A d2/d3/d11/a1
R d1/d11/a1
# move directory d1/d11 to an existing directory d2 (removes empty d1)
copying d1/d11/a1 to d2/d11/a1
removing d1/d11/a1
A d2/d11/a1
R d1/d11/a1
# move directories d1 and d2 to a new directory d3
copying d1/a to d3/d1/a
copying d1/b to d3/d1/b
copying d1/ba to d3/d1/ba
copying d1/d11/a1 to d3/d1/d11/a1
copying d2/b to d3/d2/b
removing d1/a
removing d1/b
removing d1/ba
removing d1/d11/a1
removing d2/b
A d3/d1/a
A d3/d1/b
A d3/d1/ba
A d3/d1/d11/a1
A d3/d2/b
R d1/a
R d1/b
R d1/ba
R d1/d11/a1
R d2/b
# move --after directories d1 and d2 to a new directory d3
copying d1/a to d3/d1/a
copying d1/b to d3/d1/b
copying d1/ba to d3/d1/ba
copying d1/d11/a1 to d3/d1/d11/a1
copying d2/b to d3/d2/b
removing d1/a
removing d1/b
removing d1/ba
removing d1/d11/a1
removing d2/b
A d3/d1/a
A d3/d1/b
A d3/d1/ba
A d3/d1/d11/a1
A d3/d2/b
R d1/a
R d1/b
R d1/ba
R d1/d11/a1
R d2/b
# move everything under directory d1 to existing directory d2, do not
# overwrite existing files (d2/b)
d2/b: not overwriting - file exists
copying d1/d11/a1 to d2/d11/a1
removing d1/d11/a1
A d2/a
A d2/ba
A d2/d11/a1
R d1/a
R d1/ba
R d1/d11/a1
1c1
< d1/b
---
> d2/b
# attempt to move potentially more than one file into a non-existent
# directory
abort: with multiple sources, destination must be an existing directory
# move every file under d1 to d2/d21 (glob)
copying d1/a to d2/d21/a
copying d1/b to d2/d21/b
copying d1/ba to d2/d21/ba
copying d1/d11/a1 to d2/d21/a1
removing d1/a
removing d1/b
removing d1/ba
removing d1/d11/a1
A d2/d21/a
A d2/d21/a1
A d2/d21/b
A d2/d21/ba
R d1/a
R d1/b
R d1/ba
R d1/d11/a1
# move --after some files under d1 to d2/d21 (glob)
copying d1/a to d2/d21/a
copying d1/d11/a1 to d2/d21/a1
removing d1/a
removing d1/d11/a1
A d2/d21/a
A d2/d21/a1
R d1/a
R d1/d11/a1
# move every file under d1 starting with an 'a' to d2/d21 (regexp)
copying d1/a to d2/d21/a
copying d1/d11/a1 to d2/d21/a1
removing d1/a
removing d1/d11/a1
A d2/d21/a
A d2/d21/a1
R d1/a
R d1/d11/a1
# attempt to overwrite an existing file
d1/ca: not overwriting - file exists
? d1/ca
# forced overwrite of an existing file
A d1/ca
R d1/ba
# replace a symlink with a file
A d1/ca
R d1/ba
# do not copy more than one source file to the same destination file
copying d1/d11/a1 to d3/d11/a1
d3/b: not overwriting - d2/b collides with d1/b
removing d1/d11/a1
A d3/a
A d3/b
A d3/ba
A d3/d11/a1
R d1/a
R d1/b
R d1/ba
R d1/d11/a1
# move a whole subtree with "hg rename ."
copying a to ../d3/d1/a
copying b to ../d3/d1/b
copying ba to ../d3/d1/ba
copying d11/a1 to ../d3/d1/d11/a1
removing a
removing b
removing ba
removing d11/a1
A d3/d1/a
A d3/d1/b
A d3/d1/ba
A d3/d1/d11/a1
R d1/a
R d1/b
R d1/ba
R d1/d11/a1
# move a whole subtree with "hg rename --after ."
copying a to ../d3/a
copying b to ../d3/b
copying ba to ../d3/ba
copying d11/a1 to ../d3/d11/a1
removing a
removing b
removing ba
removing d11/a1
A d3/a
A d3/b
A d3/ba
A d3/d11/a1
R d1/a
R d1/b
R d1/ba
R d1/d11/a1
# move the parent tree with "hg rename .."
copying ../a to ../../d3/a
copying ../b to ../../d3/b
copying ../ba to ../../d3/ba
copying a1 to ../../d3/d11/a1
removing ../a
removing ../b
removing ../ba
removing a1
A d3/a
A d3/b
A d3/ba
A d3/d11/a1
R d1/a
R d1/b
R d1/ba
R d1/d11/a1
# skip removed files
copying d1/a to d3/a
copying d1/ba to d3/ba
copying d1/d11/a1 to d3/d11/a1
removing d1/a
removing d1/ba
removing d1/d11/a1
A d3/a
A d3/ba
A d3/d11/a1
R d1/a
R d1/b
R d1/ba
R d1/d11/a1
# transitive rename
A d1/bc
R d1/b
# transitive rename --after
A d1/bc
R d1/b