Mercurial > hg
view tests/test-sparse-clone.t @ 49672:e92de86cf4f8
emitrevision: consider ancestors revision to emit as available base
This should make more delta base valid. This notably affects:
* case where we skipped some parent with empty delta to directly delta against
an ancestors
* case where an intermediate snapshots is stored.
This change means we could sent largish intermediate snapshots over the wire.
However this is actually a sub goal here. Sending snapshots over the wire means
the client have a high odd of simply storing the pre-computed delta instead of
doing a lengthy process that will… end up doing the same intermediate snapshot.
In addition the overall size of snapshot (or any level) is "only" some or the
overall delta size. (0.17% for my mercurial clone, 20% for my clone of Mozilla
try). So Sending them other the wire is unlikely to change large impact on the
bandwidth used.
If we decide that minimising the bandwidth is an explicit goal, we should
introduce new logic to filter-out snapshot as delta. The current code has no
notion explicite of snapshot so far, they just tended to fall into the wobbly
filtering options.
In some cases, this patch can yield large improvement to the bundling time:
### data-env-vars.name = mozilla-try-2019-02-18-zstd-sparse-revlog
# benchmark.name = perf-bundle
# benchmark.variants.revs = last-100000
before: 68.787066 seconds
after: 47.552677 seconds (-30.87%)
That translate to large improvement to the pull time :
### data-env-vars.name = mozilla-try-2019-02-18-zstd-sparse-revlog
# benchmark.name = pull
# benchmark.variants.issue6528 = disabled
# benchmark.variants.revs = last-100000
before: 142.186625 seconds
after: 75.897745 seconds (-46.62%)
No significant negative impact have been observed.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Sat, 12 Nov 2022 00:18:41 +0100 |
parents | 9c4204b7f3e4 |
children |
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test sparse $ cat >> $HGRCPATH << EOF > [ui] > username = nobody <no.reply@fb.com> > [extensions] > sparse= > purge= > strip= > rebase= > EOF $ hg init myrepo $ cd myrepo $ echo a > index.html $ echo x > data.py $ echo z > readme.txt $ cat > webpage.sparse <<EOF > [include] > *.html > EOF $ cat > backend.sparse <<EOF > [include] > *.py > EOF $ hg ci -Aqm 'initial' $ cd .. Verify local clone with a sparse profile works $ hg clone --enable-profile webpage.sparse myrepo clone1 updating to branch default warning: sparse profile 'webpage.sparse' not found in rev 000000000000 - ignoring it 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd clone1 $ ls -A .hg index.html $ cd .. Verify local clone with include works $ hg clone --include *.sparse myrepo clone2 updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd clone2 $ ls -A .hg backend.sparse webpage.sparse $ cd .. Verify local clone with exclude works $ hg clone --exclude data.py myrepo clone3 updating to branch default 4 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd clone3 $ ls -A .hg backend.sparse index.html readme.txt webpage.sparse $ cd .. Verify sparse clone profile over ssh works $ hg clone -q --enable-profile webpage.sparse ssh://user@dummy/myrepo clone4 warning: sparse profile 'webpage.sparse' not found in rev 000000000000 - ignoring it $ cd clone4 $ ls -A .hg index.html $ cd ..