stream-clone: disable gc for the entry listing section for the v2 format
This is similar to the change we did for the v3 format in 6e4c8366c5ce.
The benchmark bellow show this gives us a notable gains, especially on larger
repositories.
### benchmark.name = hg.perf.stream-locked-section
# benchmark.name = hg.perf.stream-locked-section
# bin-env-vars.hg.flavor = default
# bin-env-vars.hg.py-re2-module = default
# benchmark.variants.version = v2
## data-env-vars.name = pypy-2018-08-01-zstd-sparse-revlog
5e931bf8707c: 0.503820 ~~~~~
1106d1bf695e: 0.470078 (-6.70%, -0.03)
## data-env-vars.name = pypy-2024-03-22-zstd-sparse-revlog
5e931bf8707c: 0.535756 ~~~~~
1106d1bf695e: 0.490249 (-8.49%, -0.05)
## data-env-vars.name = heptapod-public-2024-03-25-zstd-sparse-revlog
5e931bf8707c: 1.327041 ~~~~~
1106d1bf695e: 1.174636 (-11.48%, -0.15)
## data-env-vars.name = netbeans-2018-08-01-zstd-sparse-revlog
5e931bf8707c: 2.439158 ~~~~~
1106d1bf695e: 2.220515 (-8.96%, -0.22)
## data-env-vars.name = netbeans-2019-11-07-zstd-sparse-revlog
5e931bf8707c: 2.630794 ~~~~~
1106d1bf695e: 2.261473 (-14.04%, -0.37)
## data-env-vars.name = mozilla-central-2018-08-01-zstd-sparse-revlog
5e931bf8707c: 5.769002 ~~~~~
1106d1bf695e: 5.062000 (-12.26%, -0.71)
## data-env-vars.name = mozilla-try-2019-02-18-zstd-sparse-revlog
5e931bf8707c: 13.351750 ~~~~~
1106d1bf695e: 12.346655 (-7.53%, -1.01)
## data-env-vars.name = mozilla-central-2024-03-22-zstd-sparse-revlog
5e931bf8707c: 10.772939 ~~~~~
1106d1bf695e: 9.495407 (-11.86%, -1.28)
## data-env-vars.name = mozilla-unified-2024-03-22-zstd-sparse-revlog
5e931bf8707c: 10.864297 ~~~~~
1106d1bf695e: 9.475597 (-12.78%, -1.39)
## data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog
5e931bf8707c: 17.448335 ~~~~~
1106d1bf695e: 16.027474 (-8.14%, -1.42)
test sparse
$ hg init myrepo
$ cd myrepo
$ cat >> $HGRCPATH <<EOF
> [extensions]
> sparse=
> purge=
> strip=
> rebase=
> EOF
$ echo a > index.html
$ echo x > data.py
$ echo z > readme.txt
$ cat > base.sparse <<EOF
> [include]
> *.sparse
> EOF
$ hg ci -Aqm 'initial'
$ cat > webpage.sparse <<EOF
> %include base.sparse
> [include]
> *.html
> EOF
$ hg ci -Aqm 'initial'
Import a rules file against a 'blank' sparse profile
$ cat > $TESTTMP/rules_to_import <<EOF
> [include]
> *.py
> EOF
$ hg debugsparse --import-rules $TESTTMP/rules_to_import
$ ls -A
.hg
data.py
$ hg debugsparse --reset
$ rm .hg/sparse
$ cat > $TESTTMP/rules_to_import <<EOF
> %include base.sparse
> [include]
> *.py
> EOF
$ hg debugsparse --import-rules $TESTTMP/rules_to_import
$ ls -A
.hg
base.sparse
data.py
webpage.sparse
$ hg debugsparse --reset
$ rm .hg/sparse
Start against an existing profile; rules *already active* should be ignored
$ hg debugsparse --enable-profile webpage.sparse
$ hg debugsparse --include *.py
$ cat > $TESTTMP/rules_to_import <<EOF
> %include base.sparse
> [include]
> *.html
> *.txt
> [exclude]
> *.py
> EOF
$ hg debugsparse --import-rules $TESTTMP/rules_to_import
$ ls -A
.hg
base.sparse
index.html
readme.txt
webpage.sparse
$ cat .hg/sparse
%include webpage.sparse
[include]
*.py
*.txt
[exclude]
*.py
$ hg debugsparse --reset
$ rm .hg/sparse
Same tests, with -Tjson enabled to output summaries
$ cat > $TESTTMP/rules_to_import <<EOF
> [include]
> *.py
> EOF
$ hg debugsparse --import-rules $TESTTMP/rules_to_import -Tjson
[
{
"exclude_rules_added": 0,
"files_added": 0,
"files_conflicting": 0,
"files_dropped": 4,
"include_rules_added": 1,
"profiles_added": 0
}
]
$ hg debugsparse --reset
$ rm .hg/sparse
$ cat > $TESTTMP/rules_to_import <<EOF
> %include base.sparse
> [include]
> *.py
> EOF
$ hg debugsparse --import-rules $TESTTMP/rules_to_import -Tjson
[
{
"exclude_rules_added": 0,
"files_added": 0,
"files_conflicting": 0,
"files_dropped": 2,
"include_rules_added": 1,
"profiles_added": 1
}
]
$ hg debugsparse --reset
$ rm .hg/sparse
$ hg debugsparse --enable-profile webpage.sparse
$ hg debugsparse --include *.py
$ cat > $TESTTMP/rules_to_import <<EOF
> %include base.sparse
> [include]
> *.html
> *.txt
> [exclude]
> *.py
> EOF
$ hg debugsparse --import-rules $TESTTMP/rules_to_import -Tjson
[
{
"exclude_rules_added": 1,
"files_added": 1,
"files_conflicting": 0,
"files_dropped": 1,
"include_rules_added": 1,
"profiles_added": 0
}
]
If importing results in no new rules being added, no refresh should take place!
$ cat > $TESTTMP/trap_sparse_refresh.py <<EOF
> from mercurial import error, sparse
> def extsetup(ui):
> def abort_refresh(*args, **kwargs):
> raise error.Abort(b'sparse._refresh called!')
> sparse.refreshwdir = abort_refresh
> EOF
$ cat >> $HGRCPATH <<EOF
> [extensions]
> trap_sparse_refresh=$TESTTMP/trap_sparse_refresh.py
> EOF
$ cat > $TESTTMP/rules_to_import <<EOF
> [include]
> *.py
> EOF
$ hg debugsparse --import-rules $TESTTMP/rules_to_import
If an exception is raised during refresh, restore the existing rules again.
$ cat > $TESTTMP/rules_to_import <<EOF
> [exclude]
> *.html
> EOF
$ hg debugsparse --import-rules $TESTTMP/rules_to_import
abort: sparse._refresh called!
[255]
$ cat .hg/sparse
%include webpage.sparse
[include]
*.py
*.txt
[exclude]
*.py