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)
#require fuzzywuzzy
$ cat >> $HGRCPATH << EOF
> [extensions]
> releasenotes=
> EOF
$ hg init simple-repo
$ cd simple-repo
A fix directive from commit message is added to release notes
$ touch fix1
$ hg -q commit -A -l - << EOF
> commit 1
>
> .. fix::
>
> Fix from commit message.
> EOF
$ cat >> $TESTTMP/single-fix-bullet << EOF
> Bug Fixes
> =========
>
> * Fix from release notes.
> EOF
$ hg releasenotes -r . $TESTTMP/single-fix-bullet
$ cat $TESTTMP/single-fix-bullet
Bug Fixes
=========
* Fix from release notes.
* Fix from commit message.
Processing again ignores the already added bullet.
$ hg releasenotes -r . $TESTTMP/single-fix-bullet
$ cat $TESTTMP/single-fix-bullet
Bug Fixes
=========
* Fix from release notes.
* Fix from commit message.
$ cd ..
Sections are unioned
$ hg init subsections
$ cd subsections
$ touch fix1
$ hg -q commit -A -l - << EOF
> Commit 1
>
> .. feature:: Commit Message Feature
>
> This describes a feature from a commit message.
> EOF
$ cat >> $TESTTMP/single-feature-section << EOF
> New Features
> ============
>
> Notes Feature
> -------------
>
> This describes a feature from a release notes file.
> EOF
$ hg releasenotes -r . $TESTTMP/single-feature-section
$ cat $TESTTMP/single-feature-section
New Features
============
Notes Feature
-------------
This describes a feature from a release notes file.
Commit Message Feature
----------------------
This describes a feature from a commit message.
Doing it again won't add another section
$ hg releasenotes -r . $TESTTMP/single-feature-section
Commit Message Feature already exists in feature section; ignoring
$ cat $TESTTMP/single-feature-section
New Features
============
Notes Feature
-------------
This describes a feature from a release notes file.
Commit Message Feature
----------------------
This describes a feature from a commit message.
$ cd ..
Bullets from rev merge with those from notes file.
$ hg init bullets
$ cd bullets
$ touch fix1
$ hg -q commit -A -l - << EOF
> commit 1
>
> .. fix::
>
> this is fix1.
> EOF
$ touch fix2
$ hg -q commit -A -l - << EOF
> commit 2
>
> .. fix::
>
> this is fix2.
> EOF
$ hg releasenotes -r 'all()' $TESTTMP/relnotes-bullet-problem
$ cat $TESTTMP/relnotes-bullet-problem
Bug Fixes
=========
* this is fix1.
* this is fix2.
$ touch fix3
$ hg -q commit -A -l - << EOF
> commit 3
>
> .. fix::
>
> this is fix3.
> EOF
$ hg releasenotes -r . $TESTTMP/relnotes-bullet-problem
$ cat $TESTTMP/relnotes-bullet-problem
Bug Fixes
=========
* this is fix1.
* this is fix2.
* this is fix3.
$ cd ..
Ignores commit messages containing issueNNNN based on issue number.
$ hg init simple-fuzzrepo
$ cd simple-fuzzrepo
$ touch fix1
$ hg -q commit -A -l - << EOF
> commit 1
>
> .. fix::
>
> Resolved issue4567.
> EOF
$ cat >> $TESTTMP/issue-number-notes << EOF
> Bug Fixes
> =========
>
> * Fixed issue1234 related to XYZ.
>
> * Fixed issue4567 related to ABC.
>
> * Fixed issue3986 related to PQR.
> EOF
$ hg releasenotes -r . $TESTTMP/issue-number-notes
"issue4567" already exists in notes; ignoring
$ cat $TESTTMP/issue-number-notes
Bug Fixes
=========
* Fixed issue1234 related to XYZ.
* Fixed issue4567 related to ABC.
* Fixed issue3986 related to PQR.
$ cd ..
Adds short commit messages (words < 10) without
comparison unless there is an exact match.
$ hg init tempdir
$ cd tempdir
$ touch feature1
$ hg -q commit -A -l - << EOF
> commit 1
>
> .. feature::
>
> Adds a new feature 1.
> EOF
$ hg releasenotes -r . $TESTTMP/short-sentence-notes
$ touch feature2
$ hg -q commit -A -l - << EOF
> commit 2
>
> .. feature::
>
> Adds a new feature 2.
> EOF
$ hg releasenotes -r . $TESTTMP/short-sentence-notes
$ cat $TESTTMP/short-sentence-notes
New Features
============
* Adds a new feature 1.
* Adds a new feature 2.
$ cd ..
Ignores commit messages based on fuzzy comparison.
$ hg init fuzznotes
$ cd fuzznotes
$ touch fix1
$ hg -q commit -A -l - << EOF
> commit 1
>
> .. fix::
>
> This is a fix with another line.
> And it is a big one.
> EOF
$ cat >> $TESTTMP/fuzz-ignore-notes << EOF
> Bug Fixes
> =========
>
> * Fixed issue4567 by improving X.
>
> * This is the first line. This is next line with one newline.
>
> This is another line written after two newlines. This is going to be a big one.
>
> * This fixes another problem.
> EOF
$ hg releasenotes -r . $TESTTMP/fuzz-ignore-notes
"This is a fix with another line. And it is a big one." already exists in notes file; ignoring
$ cat $TESTTMP/fuzz-ignore-notes
Bug Fixes
=========
* Fixed issue4567 by improving X.
* This is the first line. This is next line with one newline.
This is another line written after two newlines. This is going to be a big
one.
* This fixes another problem.