commit: improve the files field of changelog for merges
Currently, the files list of merge commits repeats all the deletions
(either actual deletions, or files that got renamed) that happened
between base and p2 of the merge. If p2 is the main branch, the list
can easily be much bigger than the change being merged.
This results in various problems worth improving:
- changelog is bigger than necessary
- `hg log directory` lists many unrelated merge commits, and `hg log
-v -r commit` frequently fills multiple screens worth of files
- it possibly slows down adjustlinkrev, by forcing it to read more
manifests, and that function can certainly be a bottleneck
- the server side of pulls can waste a lot of time simply opening the
filelogs for pointless files (the constant factors for opening even
a tiny filelog is apparently pretty bad)
So stop listing such files as described in the code. Impacted merge
commits and their descendants get a different hash than they would
have without this. This doesn't seem problematic, except for
convert. The previous commit helped with that in the hg->hg case (but
if you do svn->hg twice from scratch, hashes can still change).
The rest of the description is numbers. I don't have much to report,
because recreating the files list of existing repositories is not
easy:
- debugupgradeformat and bundle/unbundle don't recreate the list
- export/import tends to choke quickly applying patches or on
description that contain diffs,
- merge commits from the convert extension don't have the right files
list for reasons orthogonal to the current commit
- replaying the merge with hg update/hg merge/hg revert --all/hg
commit can end up failing in hg revert
- I wasn't sure that using debugsetparents + debugrebuilddirstate
would really build the right thing
I measured commit time before and after this change, in a case with no
files filtered out, several files filtered out (no difference) and 5k
files filtered out (+1% time).
Recreating the 100 more recent merges in a private repo, the
concatenated uncompressed files lists goes from 1.12MB to
0.52MB. Excluding 3 merges that are not representative, then the size
goes from 570k to 15k.
I converted part of mozilla-central, and observed file list shrinking
quite a bit too, starting at the very first merge,
733641d9feaf, going
from 550 files to 10 files (although they have relatively few merges,
so they probably wouldn't care).
Differential Revision: https://phab.mercurial-scm.org/D6613
Testing the functionality to pull remotenames
=============================================
$ cat >> $HGRCPATH << EOF
> [ui]
> ssh = "$PYTHON" "$TESTDIR/dummyssh"
> [alias]
> glog = log -G -T '{rev}:{node|short} {desc}'
> [extensions]
> remotenames =
> show =
> EOF
Making a server repo
--------------------
$ hg init server
$ cd server
$ for ch in a b c d e f g h; do
> echo "foo" >> $ch
> hg ci -Aqm "Added "$ch
> done
$ hg glog
@ 7:ec2426147f0e Added h
|
o 6:87d6d6676308 Added g
|
o 5:825660c69f0c Added f
|
o 4:aa98ab95a928 Added e
|
o 3:62615734edd5 Added d
|
o 2:28ad74487de9 Added c
|
o 1:29becc82797a Added b
|
o 0:18d04c59bb5d Added a
$ hg bookmark -r 3 foo
$ hg bookmark -r 6 bar
$ hg up 4
0 files updated, 0 files merged, 3 files removed, 0 files unresolved
$ hg branch wat
marked working directory as branch wat
(branches are permanent and global, did you want a bookmark?)
$ echo foo >> bar
$ hg ci -Aqm "added bar"
Making a client repo
--------------------
$ cd ..
$ hg clone ssh://user@dummy/server client
requesting all changes
adding changesets
adding manifests
adding file changes
added 9 changesets with 9 changes to 9 files (+1 heads)
new changesets 18d04c59bb5d:3e1487808078
updating to branch default
8 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd client
$ cat .hg/logexchange/bookmarks
0
87d6d66763085b629e6d7ed56778c79827273022\x00default\x00bar (esc)
62615734edd52f06b6fb9c2beb429e4fe30d57b8\x00default\x00foo (esc)
$ cat .hg/logexchange/branches
0
ec2426147f0e39dbc9cef599b066be6035ce691d\x00default\x00default (esc)
3e1487808078543b0af6d10dadf5d46943578db0\x00default\x00wat (esc)
$ hg show work
o 3e14 (wat) (default/wat) added bar
~
@ ec24 (default/default) Added h
~
$ hg update "default/wat"
1 files updated, 0 files merged, 3 files removed, 0 files unresolved
$ hg identify
3e1487808078 (wat) tip
Making a new server
-------------------
$ cd ..
$ hg init server2
$ cd server2
$ hg pull ../server/
pulling from ../server/
requesting all changes
adding changesets
adding manifests
adding file changes
added 9 changesets with 9 changes to 9 files (+1 heads)
adding remote bookmark bar
adding remote bookmark foo
new changesets 18d04c59bb5d:3e1487808078
(run 'hg heads' to see heads)
Pulling form the new server
---------------------------
$ cd ../client/
$ hg pull ../server2/
pulling from ../server2/
searching for changes
no changes found
$ cat .hg/logexchange/bookmarks
0
62615734edd52f06b6fb9c2beb429e4fe30d57b8\x00default\x00foo (esc)
87d6d66763085b629e6d7ed56778c79827273022\x00default\x00bar (esc)
87d6d66763085b629e6d7ed56778c79827273022\x00$TESTTMP/server2\x00bar (esc)
62615734edd52f06b6fb9c2beb429e4fe30d57b8\x00$TESTTMP/server2\x00foo (esc)
$ cat .hg/logexchange/branches
0
3e1487808078543b0af6d10dadf5d46943578db0\x00default\x00wat (esc)
ec2426147f0e39dbc9cef599b066be6035ce691d\x00default\x00default (esc)
ec2426147f0e39dbc9cef599b066be6035ce691d\x00$TESTTMP/server2\x00default (esc)
3e1487808078543b0af6d10dadf5d46943578db0\x00$TESTTMP/server2\x00wat (esc)
$ hg log -G
@ changeset: 8:3e1487808078
| branch: wat
| tag: tip
| remote branch: $TESTTMP/server2/wat
| remote branch: default/wat
| parent: 4:aa98ab95a928
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: added bar
|
| o changeset: 7:ec2426147f0e
| | remote branch: $TESTTMP/server2/default
| | remote branch: default/default
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | summary: Added h
| |
| o changeset: 6:87d6d6676308
| | bookmark: bar
| | remote bookmark: $TESTTMP/server2/bar
| | remote bookmark: default/bar
| | hoisted name: bar
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | summary: Added g
| |
| o changeset: 5:825660c69f0c
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: Added f
|
o changeset: 4:aa98ab95a928
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: Added e
|
o changeset: 3:62615734edd5
| bookmark: foo
| remote bookmark: $TESTTMP/server2/foo
| remote bookmark: default/foo
| hoisted name: foo
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: Added d
|
o changeset: 2:28ad74487de9
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: Added c
|
o changeset: 1:29becc82797a
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: Added b
|
o changeset: 0:18d04c59bb5d
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Added a
Testing the templates provided by remotenames extension
`remotenames` keyword
$ hg log -G -T "{rev}:{node|short} {remotenames}\n"
@ 8:3e1487808078 $TESTTMP/server2/wat default/wat
|
| o 7:ec2426147f0e $TESTTMP/server2/default default/default
| |
| o 6:87d6d6676308 $TESTTMP/server2/bar default/bar
| |
| o 5:825660c69f0c
|/
o 4:aa98ab95a928
|
o 3:62615734edd5 $TESTTMP/server2/foo default/foo
|
o 2:28ad74487de9
|
o 1:29becc82797a
|
o 0:18d04c59bb5d
`remotebookmarks` and `remotebranches` keywords
$ hg log -G -T "{rev}:{node|short} [{remotebookmarks}] ({remotebranches})"
@ 8:3e1487808078 [] ($TESTTMP/server2/wat default/wat)
|
| o 7:ec2426147f0e [] ($TESTTMP/server2/default default/default)
| |
| o 6:87d6d6676308 [$TESTTMP/server2/bar default/bar] ()
| |
| o 5:825660c69f0c [] ()
|/
o 4:aa98ab95a928 [] ()
|
o 3:62615734edd5 [$TESTTMP/server2/foo default/foo] ()
|
o 2:28ad74487de9 [] ()
|
o 1:29becc82797a [] ()
|
o 0:18d04c59bb5d [] ()
The `hoistednames` template keyword
$ hg log -GT "{rev}:{node|short} ({hoistednames})"
@ 8:3e1487808078 ()
|
| o 7:ec2426147f0e ()
| |
| o 6:87d6d6676308 (bar)
| |
| o 5:825660c69f0c ()
|/
o 4:aa98ab95a928 ()
|
o 3:62615734edd5 (foo)
|
o 2:28ad74487de9 ()
|
o 1:29becc82797a ()
|
o 0:18d04c59bb5d ()
Testing the revsets provided by remotenames extension
`remotenames` revset
$ hg log -r "remotenames()" -GT "{rev}:{node|short} {remotenames}\n"
@ 8:3e1487808078 $TESTTMP/server2/wat default/wat
:
: o 7:ec2426147f0e $TESTTMP/server2/default default/default
: |
: o 6:87d6d6676308 $TESTTMP/server2/bar default/bar
:/
o 3:62615734edd5 $TESTTMP/server2/foo default/foo
|
~
`remotebranches` revset
$ hg log -r "remotebranches()" -GT "{rev}:{node|short} {remotenames}\n"
@ 8:3e1487808078 $TESTTMP/server2/wat default/wat
|
~
o 7:ec2426147f0e $TESTTMP/server2/default default/default
|
~
`remotebookmarks` revset
$ hg log -r "remotebookmarks()" -GT "{rev}:{node|short} {remotenames}\n"
o 6:87d6d6676308 $TESTTMP/server2/bar default/bar
:
o 3:62615734edd5 $TESTTMP/server2/foo default/foo
|
~
Updating to revision using hoisted name
---------------------------------------
Deleting local bookmark to make sure we update to hoisted name only
$ hg bookmark -d bar
$ hg up bar
2 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg log -r .
changeset: 6:87d6d6676308
remote bookmark: $TESTTMP/server2/bar
remote bookmark: default/bar
hoisted name: bar
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Added g
When both local bookmark and hoisted name exists but on different revs
$ hg up 8
1 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ hg bookmark foo
moving bookmark 'foo' forward from 62615734edd5
Local bookmark should take precedence over hoisted name
$ hg up foo
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg log -r .
changeset: 8:3e1487808078
branch: wat
bookmark: foo
tag: tip
remote branch: $TESTTMP/server2/wat
remote branch: default/wat
parent: 4:aa98ab95a928
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: added bar
$ hg bookmarks
$TESTTMP/server2/bar 6:87d6d6676308
$TESTTMP/server2/foo 3:62615734edd5
default/bar 6:87d6d6676308
default/foo 3:62615734edd5
* foo 8:3e1487808078
Testing the remotenames sychronization during `hg push`
-------------------------------------------------------
$ cd ../server/
$ hg bookmark foo
moving bookmark 'foo' forward from 62615734edd5
After the push, default/foo should move to rev 8
$ cd ../client/
$ hg push
pushing to ssh://user@dummy/server
searching for changes
no changes found
[1]
$ hg log -Gr 'remotenames()'
@ changeset: 8:3e1487808078
: branch: wat
: bookmark: foo
: tag: tip
: remote bookmark: default/foo
: hoisted name: foo
: remote branch: $TESTTMP/server2/wat
: remote branch: default/wat
: parent: 4:aa98ab95a928
: user: test
: date: Thu Jan 01 00:00:00 1970 +0000
: summary: added bar
:
: o changeset: 7:ec2426147f0e
: | remote branch: $TESTTMP/server2/default
: | remote branch: default/default
: | user: test
: | date: Thu Jan 01 00:00:00 1970 +0000
: | summary: Added h
: |
: o changeset: 6:87d6d6676308
:/ remote bookmark: $TESTTMP/server2/bar
: remote bookmark: default/bar
: hoisted name: bar
: user: test
: date: Thu Jan 01 00:00:00 1970 +0000
: summary: Added g
:
o changeset: 3:62615734edd5
| remote bookmark: $TESTTMP/server2/foo
~ user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Added d
$ hg bookmarks
$TESTTMP/server2/bar 6:87d6d6676308
$TESTTMP/server2/foo 3:62615734edd5
default/bar 6:87d6d6676308
default/foo 8:3e1487808078
* foo 8:3e1487808078
Testing the names argument to remotenames, remotebranches and remotebookmarks revsets
--------------------------------------------------------------------------------------
$ cd ..
$ hg clone ssh://user@dummy/server client2
requesting all changes
adding changesets
adding manifests
adding file changes
added 9 changesets with 9 changes to 9 files (+1 heads)
new changesets 18d04c59bb5d:3e1487808078
updating to branch default
8 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd server2
$ hg up wat
6 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo foo > watwat
$ hg ci -Aqm "added watwat"
$ hg bookmark bar
abort: bookmark 'bar' already exists (use -f to force)
[255]
$ hg up ec24
3 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ echo i > i
$ hg ci -Aqm "added i"
$ cd ../client2
$ echo "[paths]" >> .hg/hgrc
$ echo "server2 = $TESTTMP/server2" >> .hg/hgrc
$ hg pull server2
pulling from $TESTTMP/server2
searching for changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
new changesets f34adec73c21:bf433e48adea
(run 'hg update' to get a working copy)
$ hg log -Gr 'remotenames()' -T '{rev}:{node|short} {desc}\n({remotebranches}) [{remotebookmarks}]\n\n'
o 10:bf433e48adea added i
| (server2/default) []
|
| o 9:f34adec73c21 added watwat
| | (server2/wat) []
| |
| o 8:3e1487808078 added bar
| : (default/wat) [default/foo]
| :
@ : 7:ec2426147f0e Added h
| : (default/default) []
| :
o : 6:87d6d6676308 Added g
:/ () [default/bar server2/bar]
:
o 3:62615734edd5 Added d
| () [server2/foo]
~
Testing for a single remote name which exists
$ hg log -r 'remotebranches("default/wat")' -GT "{rev}:{node|short} {remotebranches}\n"
o 8:3e1487808078 default/wat
|
~
$ hg log -r 'remotebookmarks("server2/foo")' -GT "{rev}:{node|short} {remotebookmarks}\n"
o 3:62615734edd5 server2/foo
|
~
$ hg log -r 'remotenames("re:default")' -GT "{rev}:{node|short} {remotenames}\n"
o 10:bf433e48adea server2/default
|
| o 8:3e1487808078 default/foo default/wat
| |
| ~
@ 7:ec2426147f0e default/default
|
o 6:87d6d6676308 default/bar server2/bar
|
~
Testing for a literal name which does not exists, which should fail.
$ hg log -r 'remotebranches(def)' -GT "{rev}:{node|short} {remotenames}\n"
abort: remote name 'def' does not exist!
[255]
$ hg log -r 'remotebookmarks("server3")' -GT "{rev}:{node|short} {remotenames}\n"
abort: remote name 'server3' does not exist!
[255]
$ hg log -r 'remotenames("server3")' -GT "{rev}:{node|short} {remotenames}\n"
abort: remote name 'server3' does not exist!
[255]
Testing for a pattern which does not match anything, which shouldn't fail.
$ hg log -r 'remotenames("re:^server3$")'
Testing for multiple names, which is not supported.
$ hg log -r 'remotenames("re:default", "re:server2")' -GT "{rev}:{node|short} {remotenames}\n"
hg: parse error: only one argument accepted
[255]
$ hg log -r 'remotebranches("default/wat", "server2/wat")' -GT "{rev}:{node|short} {remotebranches}\n"
hg: parse error: only one argument accepted
[255]
$ hg log -r 'remotebookmarks("default/foo", "server2/foo")' -GT "{rev}:{node|short} {remotebookmarks}\n"
hg: parse error: only one argument accepted
[255]
Testing pattern matching
$ hg log -r 'remotenames("re:def")' -GT "{rev}:{node|short} {remotenames}\n"
o 10:bf433e48adea server2/default
|
| o 8:3e1487808078 default/foo default/wat
| |
| ~
@ 7:ec2426147f0e default/default
|
o 6:87d6d6676308 default/bar server2/bar
|
~
$ hg log -r 'remotebranches("re:ser.*2")' -GT "{rev}:{node|short} {remotebranches}\n"
o 10:bf433e48adea server2/default
|
~
o 9:f34adec73c21 server2/wat
|
~