Mercurial > hg
annotate tests/test-bad-pull.t @ 47120:7109a38830c9
dirstate-tree: Fold "tracked descendants" counter update in main walk
For the purpose of implementing `has_tracked_dir` (which means "has tracked
descendants) without an expensive sub-tree traversal, we maintaing a counter
of tracked descendants on each "directory" node of the tree-shaped dirstate.
Before this changeset, mutating or inserting a node at a given path would
involve:
* Walking the tree from root through ancestors to find the node or the spot
where to insert it
* Looking at the previous node if any to decide what counter update is needed
* Performing any node mutation
* Walking the tree *again* to update counters in ancestor nodes
When profiling `hg status` on a large repo, this second walk takes times
while loading a the dirstate from disk.
It turns out we have enough information to decide before he first tree walk
what counter update is needed. This changeset merges the two walks, gaining
~10% of the total time for `hg update` (in the same hyperfine benchmark as
the previous changeset).
---
Profiling was done by compiling with this `.cargo/config`:
[profile.release]
debug = true
then running with:
py-spy record -r 500 -n -o /tmp/hg.json --format speedscope -- \
./hg status -R $REPO --config experimental.dirstate-tree.in-memory=1
then visualizing the recorded JSON file in https://www.speedscope.app/
Differential Revision: https://phab.mercurial-scm.org/D10554
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Fri, 30 Apr 2021 14:22:14 +0200 |
parents | ebee234d952a |
children |
rev | line source |
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37845
b4b7427b5786
tests: remove #require killdaemons
Gregory Szorc <gregory.szorc@gmail.com>
parents:
32940
diff
changeset
|
1 #require serve |
15446
c5c9ca3719f9
tests: use 'hghave serve' to guard tests that requires serve daemon management
Mads Kiilerich <mads@kiilerich.com>
parents:
12376
diff
changeset
|
2 |
17019
5d0538599428
test-bad-pull: partially adjust for Windows
Adrian Buehlmann <adrian@cadifra.com>
parents:
16496
diff
changeset
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3 $ hg clone http://localhost:$HGPORT/ copy |
5d0538599428
test-bad-pull: partially adjust for Windows
Adrian Buehlmann <adrian@cadifra.com>
parents:
16496
diff
changeset
|
4 abort: * (glob) |
45839
ebee234d952a
errors: set detailed exit code to 100 for some remote errors
Martin von Zweigbergk <martinvonz@google.com>
parents:
39707
diff
changeset
|
5 [100] |
395 | 6 |
15515
21766d5531cb
tests: remove hacks for testing if file or directory exists
Mads Kiilerich <mads@kiilerich.com>
parents:
15446
diff
changeset
|
7 $ test -d copy |
21766d5531cb
tests: remove hacks for testing if file or directory exists
Mads Kiilerich <mads@kiilerich.com>
parents:
15446
diff
changeset
|
8 [1] |
395 | 9 |
39707
5abc47d4ca6b
tests: quote PYTHON usage
Matt Harbison <matt_harbison@yahoo.com>
parents:
37845
diff
changeset
|
10 $ "$PYTHON" "$TESTDIR/dumbhttp.py" -p $HGPORT --pid dumb.pid |
22959
10116463b0b1
tests: pull common http server setup out of individual tests
Mike Hommey <mh@glandium.org>
parents:
22046
diff
changeset
|
11 $ cat dumb.pid >> $DAEMON_PIDS |
16334
b9bd95e61b49
tests: fix shutdown race in test-bad-pull
Matt Mackall <mpm@selenic.com>
parents:
16296
diff
changeset
|
12 $ hg clone http://localhost:$HGPORT/foo copy2 |
b9bd95e61b49
tests: fix shutdown race in test-bad-pull
Matt Mackall <mpm@selenic.com>
parents:
16296
diff
changeset
|
13 abort: HTTP Error 404: * (glob) |
45839
ebee234d952a
errors: set detailed exit code to 100 for some remote errors
Martin von Zweigbergk <martinvonz@google.com>
parents:
39707
diff
changeset
|
14 [100] |
25474
8c14f87bd0ae
tests: drop DAEMON_PIDS from killdaemons calls
Matt Mackall <mpm@selenic.com>
parents:
25472
diff
changeset
|
15 $ killdaemons.py |