Mercurial > hg
view tests/test-absorb-edit-lines.t @ 52060:8b7123c8947b
update: add a Rust fast-path when updating from null (and clean)
This case is easy to detect and we have all we need to generate a valid
working copy and dirstate entirely in Rust, which speeds things up
considerably:
On my machine updating a repo of ~300k files goes from 10.00s down to 4.2s,
all while consuming 50% less system time, with all caches hot.
Something to note is that further improvements will probably happen
with the upcoming `InnerRevlog` series that does smarter
mmap hanlding, especially for filelogs.
Here are benchmark numbers on a machine with only 4 cores (and no SMT enabled)
```
### data-env-vars.name = heptapod-public-2024-03-25-ds2-pnm
# benchmark.name = hg.command.update
# bin-env-vars.hg.py-re2-module = default
# bin-env-vars.hg.changeset.node = <this change>
# benchmark.variants.atomic-update = no
# benchmark.variants.scenario = null-to-tip
# benchmark.variants.worker = default
default: 5.328762 ~~~~~
rust: 1.308654 (-75.44%, -4.02)
### data-env-vars.name = mercurial-devel-2024-03-22-ds2-pnm
# benchmark.name = hg.command.update
# bin-env-vars.hg.py-re2-module = default
# bin-env-vars.hg.changeset.node = <this change>
# benchmark.variants.atomic-update = no
# benchmark.variants.scenario = null-to-tip
# benchmark.variants.worker = default
default: 1.693271 ~~~~~
rust: 1.151053 (-32.02%, -0.54)
### data-env-vars.name = mozilla-unified-2024-03-22-ds2-pnm
# benchmark.name = hg.command.update
# bin-env-vars.hg.py-re2-module = default
# bin-env-vars.hg.changeset.node = <this change>
# benchmark.variants.atomic-update = no
# benchmark.variants.scenario = null-to-tip
# benchmark.variants.worker = default
default: 38.901613 ~~~~~
rust: 11.637880 (-70.08%, -27.26)
### data-env-vars.name = netbsd-xsrc-public-2024-09-19-ds2-pnm
# benchmark.name = hg.command.update
# bin-env-vars.hg.py-re2-module = default
# bin-env-vars.hg.changeset.node = <this change>
# benchmark.variants.atomic-update = no
# benchmark.variants.scenario = null-to-tip
# benchmark.variants.worker = default
default: 4.793727 ~~~~~
rust: 1.505905 (-68.59%, -3.29)
```
author | Raphaël Gomès <rgomes@octobus.net> |
---|---|
date | Tue, 01 Oct 2024 13:49:11 +0200 |
parents | 3cd57e2be49b |
children |
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$ cat >> $HGRCPATH << EOF > [extensions] > absorb= > EOF $ hg init repo1 $ cd repo1 Make some commits: $ for i in 1 2 3; do > echo $i >> a > hg commit -A a -m "commit $i" -q > done absorb --edit-lines will run the editor if filename is provided: $ hg absorb --edit-lines nothing applied [1] $ HGEDITOR=cat hg absorb --edit-lines a HG: editing a HG: "y" means the line to the right exists in the changeset to the top HG: HG: /---- 4ec16f85269a commit 1 HG: |/--- 5c5f95224a50 commit 2 HG: ||/-- 43f0a75bede7 commit 3 HG: ||| yyy : 1 yy : 2 y : 3 nothing applied [1] Edit the file using --edit-lines: $ cat > editortext << EOF > y : a > yy : b > y : c > yy : d > y y : e > y : f > yyy : g > EOF $ HGEDITOR='cat editortext >' hg absorb -q --edit-lines a $ hg cat -r 0 a d e f g $ hg cat -r 1 a b c d g $ hg cat -r 2 a a b e g