Mercurial > hg
view tests/test-rebase-dry-run.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 | 9f33d12f6f48 |
children |
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====================== rebase --dry-run tests ====================== Test behavior associated with `hg rebase --dry-run` Setup ===== $ hg init r1 $ cd r1 $ echo one > f01.txt $ echo two > f02.txt $ echo three > f03.txt $ hg add adding f01.txt adding f02.txt adding f03.txt $ hg ci -m 'ci-1' f01.txt f02.txt f03.txt $ hg book base; hg book -i $ echo add-to-one >> f01.txt $ hg ci -m 'br-1' f01.txt $ hg book branch-1; hg book -i $ hg up base; hg book -i 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (activating bookmark base) $ echo add-to-two >> f02.txt $ hg ci -m 'br-2' f02.txt created new head $ hg book branch-2; hg book -i $ hg up branch-1; hg book -i 2 files updated, 0 files merged, 0 files removed, 0 files unresolved (activating bookmark branch-1) $ hg log -G o changeset: 2:d408211b0a6f | bookmark: branch-2 | tag: tip | parent: 0:99418d161ee0 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: br-2 | | @ changeset: 1:ab62441498e5 |/ bookmark: branch-1 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: br-1 | o changeset: 0:99418d161ee0 bookmark: base user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: ci-1 Check the working copy changes do not get wiped out =================================================== $ echo add-to-three >> f03.txt f03 is modified $ hg st M f03.txt $ hg diff diff -r ab62441498e5 f03.txt --- a/f03.txt Thu Jan 01 00:00:00 1970 +0000 +++ b/f03.txt Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +1,2 @@ three +add-to-three $ hg rebase -v -n -s branch-2 -d branch-1 --config extensions.rebase= starting dry-run rebase; repository will not be changed rebasing 2:d408211b0a6f branch-2 tip "br-2" resolving manifests getting f02.txt committing files: f02.txt committing manifest committing changelog rebase merging completed dry-run rebase completed successfully; run without -n/--dry-run to perform this rebase f03 changes are lost $ hg st M f03.txt $ hg diff diff -r ab62441498e5 f03.txt --- a/f03.txt Thu Jan 01 00:00:00 1970 +0000 +++ b/f03.txt Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +1,2 @@ three +add-to-three