Mercurial > hg
view tests/test-resolve.t @ 30212:260af19891f2
changegroup: increase write buffer size to 128k
By default, Python defers to the operating system for choosing the
default buffer size on opened files. On my Linux machine, the default
is 4k, which is really small for 2016.
This patch bumps the write buffer size when writing
changegroups/bundles to 128k. This matches the 128k read buffer
we already use on revlogs.
It's worth noting that this only impacts when writing to an explicit
file (such as during `hg bundle`). Buffers when writing to bundle
files via the repo vfs or to a temporary file are not impacted.
When producing a none-v2 bundle file of the mozilla-unified repository,
this change caused the number of write() system calls to drop from
952,449 to 29,788. After this change, the most frequent system
calls are fstat(), read(), lseek(), and open(). There were
2,523,672 system calls after this patch (so a net decrease of
~950k is statistically significant).
This change shows no performance change on my system. But I have a
high-end system with a fast SSD. It is quite possible this change
will have a significant impact on network file systems, where
extra network round trips due to excessive I/O system calls could
introduce significant latency.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sun, 16 Oct 2016 13:35:23 -0700 |
parents | 940c05b25b07 |
children | 46ba2cdda476 |
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test that a commit clears the merge state. $ hg init repo $ cd repo $ echo foo > file1 $ echo foo > file2 $ hg commit -Am 'add files' adding file1 adding file2 $ echo bar >> file1 $ echo bar >> file2 $ hg commit -Am 'append bar to files' create a second head with conflicting edits $ hg up -C 0 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo baz >> file1 $ echo baz >> file2 $ hg commit -Am 'append baz to files' created new head create a third head with no conflicting edits $ hg up -qC 0 $ echo foo > file3 $ hg commit -Am 'add non-conflicting file' adding file3 created new head failing merge $ hg up -qC 2 $ hg merge --tool=internal:fail 1 0 files updated, 0 files merged, 0 files removed, 2 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] resolve -l should contain unresolved entries $ hg resolve -l U file1 U file2 $ hg resolve -l --no-status file1 file2 resolving an unknown path should emit a warning, but not for -l $ hg resolve -m does-not-exist arguments do not match paths that need resolving $ hg resolve -l does-not-exist tell users how they could have used resolve $ mkdir nested $ cd nested $ hg resolve -m file1 arguments do not match paths that need resolving (try: hg resolve -m path:file1) $ hg resolve -m file1 filez arguments do not match paths that need resolving (try: hg resolve -m path:file1 path:filez) $ hg resolve -m path:file1 path:filez $ hg resolve -l R file1 U file2 $ hg resolve -m filez file2 arguments do not match paths that need resolving (try: hg resolve -m path:filez path:file2) $ hg resolve -m path:filez path:file2 (no more unresolved files) $ hg resolve -l R file1 R file2 cleanup $ hg resolve -u $ cd .. $ rmdir nested don't allow marking or unmarking driver-resolved files $ cat > $TESTTMP/markdriver.py << EOF > '''mark and unmark files as driver-resolved''' > from mercurial import cmdutil, merge, scmutil > cmdtable = {} > command = cmdutil.command(cmdtable) > @command('markdriver', > [('u', 'unmark', None, '')], > 'FILE...') > def markdriver(ui, repo, *pats, **opts): > wlock = repo.wlock() > try: > ms = merge.mergestate.read(repo) > m = scmutil.match(repo[None], pats, opts) > for f in ms: > if not m(f): > continue > if not opts['unmark']: > ms.mark(f, 'd') > else: > ms.mark(f, 'u') > ms.commit() > finally: > wlock.release() > EOF $ hg --config extensions.markdriver=$TESTTMP/markdriver.py markdriver file1 $ hg resolve --list D file1 U file2 $ hg resolve --mark file1 not marking file1 as it is driver-resolved this should not print out file1 $ hg resolve --mark --all (no more unresolved files -- run "hg resolve --all" to conclude) $ hg resolve --mark 'glob:file*' (no more unresolved files -- run "hg resolve --all" to conclude) $ hg resolve --list D file1 R file2 $ hg resolve --unmark file1 not unmarking file1 as it is driver-resolved (no more unresolved files -- run "hg resolve --all" to conclude) $ hg resolve --unmark --all $ hg resolve --list D file1 U file2 $ hg --config extensions.markdriver=$TESTTMP/markdriver.py markdriver --unmark file1 $ hg resolve --list U file1 U file2 resolve the failure $ echo resolved > file1 $ hg resolve -m file1 resolve -l should show resolved file as resolved $ hg resolve -l R file1 U file2 $ hg resolve -l -Tjson [ { "path": "file1", "status": "R" }, { "path": "file2", "status": "U" } ] resolve -m without paths should mark all resolved $ hg resolve -m (no more unresolved files) $ hg commit -m 'resolved' resolve -l should be empty after commit $ hg resolve -l $ hg resolve -l -Tjson [ ] resolve --all should abort when no merge in progress $ hg resolve --all abort: resolve command not applicable when not merging [255] resolve -m should abort when no merge in progress $ hg resolve -m abort: resolve command not applicable when not merging [255] can not update or merge when there are unresolved conflicts $ hg up -qC 0 $ echo quux >> file1 $ hg up 1 merging file1 warning: conflicts while merging file1! (edit, then use 'hg resolve --mark') 1 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges [1] $ hg up 0 abort: outstanding merge conflicts [255] $ hg merge 2 abort: outstanding merge conflicts [255] $ hg merge --force 2 abort: outstanding merge conflicts [255] set up conflict-free merge $ hg up -qC 3 $ hg merge 1 2 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) resolve --all should do nothing in merge without conflicts $ hg resolve --all (no more unresolved files) resolve -m should do nothing in merge without conflicts $ hg resolve -m (no more unresolved files) get back to conflicting state $ hg up -qC 2 $ hg merge --tool=internal:fail 1 0 files updated, 0 files merged, 0 files removed, 2 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] resolve without arguments should suggest --all $ hg resolve abort: no files or directories specified (use --all to re-merge all unresolved files) [255] resolve --all should re-merge all unresolved files $ hg resolve --all merging file1 merging file2 warning: conflicts while merging file1! (edit, then use 'hg resolve --mark') warning: conflicts while merging file2! (edit, then use 'hg resolve --mark') [1] $ cat file1.orig foo baz $ cat file2.orig foo baz .orig files should exists where specified $ hg resolve --all --verbose --config 'ui.origbackuppath=.hg/origbackups' merging file1 creating directory: $TESTTMP/repo/.hg/origbackups (glob) merging file2 warning: conflicts while merging file1! (edit, then use 'hg resolve --mark') warning: conflicts while merging file2! (edit, then use 'hg resolve --mark') [1] $ ls .hg/origbackups file1.orig file2.orig $ grep '<<<' file1 > /dev/null $ grep '<<<' file2 > /dev/null resolve <file> should re-merge file $ echo resolved > file1 $ hg resolve -q file1 warning: conflicts while merging file1! (edit, then use 'hg resolve --mark') [1] $ grep '<<<' file1 > /dev/null test .orig behavior with resolve $ hg resolve -q file1 --tool "sh -c 'f --dump \"$TESTTMP/repo/file1.orig\"'" $TESTTMP/repo/file1.orig: (glob) >>> foo baz <<< resolve <file> should do nothing if 'file' was marked resolved $ echo resolved > file1 $ hg resolve -m file1 $ hg resolve -q file1 $ cat file1 resolved insert unsupported advisory merge record $ hg --config extensions.fakemergerecord=$TESTDIR/fakemergerecord.py fakemergerecord -x $ hg debugmergestate * version 2 records local: 57653b9f834a4493f7240b0681efcb9ae7cab745 other: dc77451844e37f03f5c559e3b8529b2b48d381d1 labels: local: working copy other: merge rev unrecognized entry: x advisory record file extras: file1 (ancestorlinknode = 99726c03216e233810a2564cbc0adfe395007eac) file: file1 (record type "F", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390) local path: file1 (flags "") ancestor path: file1 (node 2ed2a3912a0b24502043eae84ee4b279c18b90dd) other path: file1 (node 6f4310b00b9a147241b071a60c28a650827fb03d) file extras: file2 (ancestorlinknode = 99726c03216e233810a2564cbc0adfe395007eac) file: file2 (record type "F", state "u", hash cb99b709a1978bd205ab9dfd4c5aaa1fc91c7523) local path: file2 (flags "") ancestor path: file2 (node 2ed2a3912a0b24502043eae84ee4b279c18b90dd) other path: file2 (node 6f4310b00b9a147241b071a60c28a650827fb03d) $ hg resolve -l R file1 U file2 insert unsupported mandatory merge record $ hg --config extensions.fakemergerecord=$TESTDIR/fakemergerecord.py fakemergerecord -X $ hg debugmergestate * version 2 records local: 57653b9f834a4493f7240b0681efcb9ae7cab745 other: dc77451844e37f03f5c559e3b8529b2b48d381d1 labels: local: working copy other: merge rev file extras: file1 (ancestorlinknode = 99726c03216e233810a2564cbc0adfe395007eac) file: file1 (record type "F", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390) local path: file1 (flags "") ancestor path: file1 (node 2ed2a3912a0b24502043eae84ee4b279c18b90dd) other path: file1 (node 6f4310b00b9a147241b071a60c28a650827fb03d) file extras: file2 (ancestorlinknode = 99726c03216e233810a2564cbc0adfe395007eac) file: file2 (record type "F", state "u", hash cb99b709a1978bd205ab9dfd4c5aaa1fc91c7523) local path: file2 (flags "") ancestor path: file2 (node 2ed2a3912a0b24502043eae84ee4b279c18b90dd) other path: file2 (node 6f4310b00b9a147241b071a60c28a650827fb03d) unrecognized entry: X mandatory record $ hg resolve -l abort: unsupported merge state records: X (see https://mercurial-scm.org/wiki/MergeStateRecords for more information) [255] $ hg resolve -ma abort: unsupported merge state records: X (see https://mercurial-scm.org/wiki/MergeStateRecords for more information) [255] $ hg summary warning: merge state has unsupported record types: X parent: 2:57653b9f834a append baz to files parent: 1:dc77451844e3 append bar to files branch: default commit: 2 modified, 2 unknown (merge) update: 2 new changesets (update) phases: 5 draft update --clean shouldn't abort on unsupported records $ hg up -qC 1 $ hg debugmergestate no merge state found test crashed merge with empty mergestate $ mkdir .hg/merge $ touch .hg/merge/state resolve -l should be empty $ hg resolve -l $ cd ..