revset: stop serializing node when using "%ln"
Turning hundred of thousand of node from node to hex and back can be slow… what
about we stop doing it?
In many case were we are using node id we should be using revision id. However
this is not a good reason to have a stupidly slow implementation of "%ln".
This caught my attention again because the phase discovery during push make an
extensive use of "%ln" or huge set. In absolute, that phase discovery probably
should use "%ld" and need to improves its algorithmic complexity, but improving
"%ln" seems simple and long overdue. This greatly speeds up `hg push` on
repository with many drafts.
Here are some relevant poulpe benchmarks:
### data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog
# benchmark.name = hg.command.push
# bin-env-vars.hg.flavor = default
# bin-env-vars.hg.py-re2-module = default
# benchmark.variants.explicit-rev = all-out-heads
# benchmark.variants.issue6528 = disabled
# benchmark.variants.protocol = ssh
# benchmark.variants.reuse-external-delta-parent = default
## benchmark.variants.revs = any-1-extra-rev
before: 44.235070
after: 20.416329 (-53.85%, -23.82)
## benchmark.variants.revs = any-100-extra-rev
before: 49.234697
after: 26.519829 (-46.14%, -22.71)
### benchmark.name = hg.command.bundle
# bin-env-vars.hg.flavor = default
# bin-env-vars.hg.py-re2-module = default
# benchmark.variants.revs = all
# benchmark.variants.type = none-streamv2
## data-env-vars.name = heptapod-public-2024-03-25-zstd-sparse-revlog
before: 10.138396
after: 7.750458 (-23.55%, -2.39)
## data-env-vars.name = mercurial-public-2024-03-22-zstd-sparse-revlog
before: 1.263859
after: 0.700229 (-44.60%, -0.56)
## data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog
before: 399.484481
after: 346.5089 (-13.26%, -52.98)
## data-env-vars.name = pypy-2024-03-22-zstd-sparse-revlog
before: 4.540080
after: 3.401700 (-25.07%, -1.14)
## data-env-vars.name = tryton-public-2024-03-22-zstd-sparse-revlog
before: 2.975765
after: 1.870798 (-37.13%, -1.10)
============================================
Tests for the admin::chainsaw-update command
============================================
setup
=====
$ hg init src
$ cd src
$ echo 1 > root
$ hg add root
$ hg ci -Am R_0
$ hg branch A
marked working directory as branch A
(branches are permanent and global, did you want a bookmark?)
$ echo 42 > bar
$ hg add bar
$ hg ci -Am A_0
$ echo 1337 > bar
$ hg ci -Am A_1
$ hg update 'desc(R_0)'
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo 1 > foo
$ hg add foo
$ hg ci -Am B_0
$ hg log -G
@ changeset: 3:bfcb8e629987
| tag: tip
| parent: 0:06f48e4098b8
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: B_0
|
| o changeset: 2:7fd8de258aa4
| | branch: A
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | summary: A_1
| |
| o changeset: 1:ae1692b8aadb
|/ branch: A
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A_0
|
o changeset: 0:06f48e4098b8
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: R_0
$ cd ..
Actual tests
============
Initial cloning if needed
-------------------------
$ hg admin::chainsaw-update --dest repo --rev default --source ./src
no such directory: "repo"
creating repository at "repo"
recovering after interrupted transaction, if any
no interrupted transaction available
pulling from ./src
updating to revision 'default'
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
chainsaw-update to revision 'default' for repository at '$TESTTMP/repo' done
$ cd repo
$ hg log -G
@ changeset: 3:bfcb8e629987
| tag: tip
| parent: 0:06f48e4098b8
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: B_0
|
| o changeset: 2:7fd8de258aa4
| | branch: A
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | summary: A_1
| |
| o changeset: 1:ae1692b8aadb
|/ branch: A
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A_0
|
o changeset: 0:06f48e4098b8
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: R_0
$ hg status -A
C foo
C root
$ cat foo
1
Test lock breacking capabilities
--------------------------------
Demonstrate lock-breaking capabilities with locks that regular Mercurial
operation would not break, because the hostnames registered in locks differ
from the current hostname (happens a lot with succesive containers):
$ ln -s invalid.host.test/effffffc:171814 .hg/store/lock
$ ln -s invalid.host.test/effffffc:171814 .hg/wlock
$ hg debuglock
lock: (.*?), process 171814, host invalid.host.test/effffffc \((\d+)s\) (re)
wlock: (.*?), process 171814, host invalid.host.test/effffffc \((\d+)s\) (re)
[2]
$ hg admin::chainsaw-update --no-purge-ignored --dest . --rev default --source ../src
loaded repository at "."
had to break store lock
had to break working copy lock
recovering after interrupted transaction, if any
no interrupted transaction available
pulling from ../src
updating to revision 'default'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
chainsaw-update to revision 'default' for repository at '$TESTTMP/repo' done
Test file purging capabilities
------------------------------
Let's also add local modifications (tracked and untracked) to demonstrate the
purging.
$ echo untracked > bar
$ echo modified > foo
$ hg status -A
M foo
? bar
C root
$ echo 2 > ../src/foo
$ hg -R ../src commit -mB_1
$ hg admin::chainsaw-update --dest . --rev default --source ../src -q
no interrupted transaction available
$ hg log -G
@ changeset: 4:973ab81c95fb
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: B_1
|
o changeset: 3:bfcb8e629987
| parent: 0:06f48e4098b8
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: B_0
|
| o changeset: 2:7fd8de258aa4
| | branch: A
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | summary: A_1
| |
| o changeset: 1:ae1692b8aadb
|/ branch: A
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A_0
|
o changeset: 0:06f48e4098b8
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: R_0
$ hg status -A
C foo
C root
$ cat foo
2
Now behaviour with respect to ignored files: they are not purged if
the --no-purge-ignored flag is passed, but they are purged by default
$ echo bar > .hgignore
$ hg ci -Aqm hgignore
$ echo ignored > bar
$ hg status --all
I bar
C .hgignore
C foo
C root
$ hg admin::chainsaw-update --no-purge-ignored --dest . --rev default --source ../src -q
no interrupted transaction available
$ hg status --all
I bar
C .hgignore
C foo
C root
$ cat bar
ignored
$ hg admin::chainsaw-update --dest . --rev default --source ../src -q
no interrupted transaction available
$ hg status --all
C .hgignore
C foo
C root
$ test -f bar
[1]
test --minimal-initial-cloning variant
--------------------------------------
With `--minimal-initial-cloning`, there is no "requesting all changes"
message. Hence clone bundles would be bypassed (TODO test both cases
# with an actual clone-bundle)
$ cd ..
$ hg admin::chainsaw-update --dest repo2 --rev default --source src --initial-clone-minimal
no such directory: "repo2"
creating repository at "repo2"
recovering after interrupted transaction, if any
no interrupted transaction available
pulling from src
updating to revision 'default'
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
chainsaw-update to revision 'default' for repository at '$TESTTMP/repo2' done
$ cd repo2
$ hg log -G
@ changeset: 2:973ab81c95fb
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: B_1
|
o changeset: 1:bfcb8e629987
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: B_0
|
o changeset: 0:06f48e4098b8
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: R_0
$ hg status -A
C foo
C root
$ cat foo
2