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tests/test-rebase-dry-run.t
author Pierre-Yves David <pierre-yves.david@octobus.net>
Sat, 13 Apr 2024 23:40:28 +0200
changeset 51592 24844407fa0d
parent 50396 9f33d12f6f48
permissions -rw-r--r--
perf: clear vfs audit_cache before each run When generating a stream clone, we spend a large amount of time auditing path. Before this changes, the first run was warming the vfs cache for the other runs, leading to a large runtime difference and a "faulty" reported timing for the operation. We now clear this important cache between run to get a more realistic timing. Below are some example of median time change when clearing these cases. The maximum time for a run did not changed significantly. ### data-env-vars.name = mozilla-central-2018-08-01-zstd-sparse-revlog # benchmark.name = hg.perf.exchange.stream.generate # bin-env-vars.hg.flavor = default # bin-env-vars.hg.py-re2-module = default # benchmark.variants.version = latest no-clearing: 17.289905 cache-clearing: 21.587965 (+24.86%, +4.30) ## data-env-vars.name = mozilla-central-2024-03-22-zstd-sparse-revlog no-clearing: 32.670748 cache-clearing: 40.467095 (+23.86%, +7.80) ## data-env-vars.name = mozilla-try-2019-02-18-zstd-sparse-revlog no-clearing: 37.838858 cache-clearing: 46.072749 (+21.76%, +8.23) ## data-env-vars.name = mozilla-unified-2024-03-22-zstd-sparse-revlog no-clearing: 32.969395 cache-clearing: 39.646209 (+20.25%, +6.68) In addition, this significantly reduce the timing difference between the performance command, from the perf extensions and a `real `hg bundle` call producing a stream bundle. Some significant differences remain especially on the "mozilla-try" repositories, but they are now smaller. Note that some of that difference will actually not be attributable to the stream generation (like maybe phases or branch map computation). Below are some benchmarks done on a currently draft changeset fixing some unrelated slowness in `hg bundle` (34a78972af409d1ff37c29e60f6ca811ad1a457d) ### data-env-vars.name = mozilla-central-2018-08-01-zstd-sparse-revlog # bin-env-vars.hg.flavor = default # bin-env-vars.hg.py-re2-module = default hg.perf.exchange.stream.generate: 21.587965 hg.command.bundle: 24.301799 (+12.57%, +2.71) ## data-env-vars.name = mozilla-central-2024-03-22-zstd-sparse-revlog hg.perf.exchange.stream.generate: 40.467095 hg.command.bundle: 44.831317 (+10.78%, +4.36) ## data-env-vars.name = mozilla-unified-2024-03-22-zstd-sparse-revlog hg.perf.exchange.stream.generate: 39.646209 hg.command.bundle: 45.395258 (+14.50%, +5.75) ## data-env-vars.name = mozilla-try-2019-02-18-zstd-sparse-revlog hg.perf.exchange.stream.generate: 46.072749 hg.command.bundle: 55.882608 (+21.29%, +9.81) ## data-env-vars.name = mozilla-try-2023-03-22-zlib-general-delta hg.perf.exchange.stream.generate: 334.716708 hg.command.bundle: 377.856767 (+12.89%, +43.14) ## data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog hg.perf.exchange.stream.generate: 302.972301 hg.command.bundle: 326.098755 (+7.63%, +23.13)

======================
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
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