Mercurial > hg
view tests/test-rebase-pull.t @ 44386:8f7c6656ac79
rust-nodemap: pure Rust example
To run, use `cargo run --release --example nodemap`
This demonstrates that simple scenarios entirely written
in Rust can content themselves with `NodeTree<T>`.
The example mmaps both the nodemap file and the changelog index.
We had of course to include an implementation of `RevlogIndex`
directly, which isn't much at this stage. It felt a bit
prematurate to include it in the lib.
Here are some first performance measurements, obtained with
this example, on a clone of mozilla-central with 440000
changesets:
(create) Nodemap constructed in RAM in 153.638305ms
(query CAE63161B68962) found in 22.362us: Ok(Some(269489))
(bench) Did 3 queries in 36.418µs (mean 12.139µs)
(bench) Did 50 queries in 184.318µs (mean 3.686µs)
(bench) Did 100000 queries in 31.053461ms (mean 310ns)
To be fair, even between bench runs, results tend to depend whether
the file is still in kernel caches, and it's not so easy to
get back to a real cold start. The worst we've seen was in the
50us ballpark.
In any busy server setting, the pages would always be in RAM.
We hope it's good enough not to be significantly slower on any
concrete Mercurial operation than the C nodetree when fully in RAM,
and of course this implementation has the serious headstart advantage
of persistence.
Differential Revision: https://phab.mercurial-scm.org/D7797
author | Georges Racinet <georges.racinet@octobus.net> |
---|---|
date | Tue, 18 Feb 2020 19:11:15 +0100 |
parents | 4441705b7111 |
children | 21733e8c924f |
line wrap: on
line source
$ cat >> $HGRCPATH <<EOF > [extensions] > rebase= > histedit= > > [alias] > tglog = log -G --template "{rev}: {node|short} '{desc}' {branches}\n" > EOF $ hg init a $ cd a $ echo C1 > C1 $ hg ci -Am C1 adding C1 $ echo C2 > C2 $ hg ci -Am C2 adding C2 $ cd .. $ hg clone a b updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg clone a c updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd b $ echo L1 > L1 $ hg ci -Am L1 adding L1 $ cd ../a $ echo R1 > R1 $ hg ci -Am R1 adding R1 $ cd ../b Now b has one revision to be pulled from a: $ hg pull --rebase pulling from $TESTTMP/a searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) new changesets 77ae9631bcca rebasing 2:ff8d69a621f9 "L1" saved backup bundle to $TESTTMP/b/.hg/strip-backup/ff8d69a621f9-160fa373-rebase.hg $ hg tglog @ 3: d80cc2da061e 'L1' | o 2: 77ae9631bcca 'R1' | o 1: 783333faa078 'C2' | o 0: 05d58a0c15dd 'C1' Re-run: $ hg pull --rebase pulling from $TESTTMP/a searching for changes no changes found Abort pull early if working dir is not clean: $ echo L1-mod > L1 $ hg pull --rebase abort: uncommitted changes (cannot pull with rebase: please commit or shelve your changes first) [255] $ hg update --clean --quiet Abort pull early if another operation (histedit) is in progress: $ hg histedit . -q --commands - << EOF > edit d80cc2da061e histedit: generate unfinished state > EOF Editing (d80cc2da061e), you may commit or record as needed now. (hg histedit --continue to resume) [1] $ hg pull --rebase abort: histedit in progress (use 'hg histedit --continue' or 'hg histedit --abort') [255] $ hg histedit --abort --quiet Abort pull early with pending uncommitted merge: $ cd .. $ hg clone --noupdate c d $ cd d $ hg tglog o 1: 783333faa078 'C2' | o 0: 05d58a0c15dd 'C1' $ hg update --quiet 0 $ echo M1 > M1 $ hg commit --quiet -Am M1 $ hg update --quiet 1 $ hg merge 2 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg pull --rebase abort: outstanding uncommitted merge (cannot pull with rebase: please commit or shelve your changes first) [255] $ hg update --clean --quiet Abort pull early with unclean subrepo: $ echo s = s > .hgsub $ hg add .hgsub $ hg init s $ hg commit -m "generated a subrepo" $ echo a > s/a $ hg -R s add s/a $ hg pull --rebase abort: uncommitted changes in subrepository "s" (cannot pull with rebase: please commit or shelve your changes first) [255] Invoke pull --rebase and nothing to rebase: $ cd ../c $ hg book norebase $ hg pull --rebase pulling from $TESTTMP/a searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files new changesets 77ae9631bcca nothing to rebase - updating instead 1 files updated, 0 files merged, 0 files removed, 0 files unresolved updating bookmark norebase $ hg tglog -l 1 @ 2: 77ae9631bcca 'R1' | ~ pull --rebase --update should ignore --update: $ hg pull --rebase --update pulling from $TESTTMP/a searching for changes no changes found pull --rebase doesn't update if nothing has been pulled: $ hg up -q 1 $ hg pull --rebase pulling from $TESTTMP/a searching for changes no changes found $ hg tglog -l 1 o 2: 77ae9631bcca 'R1' | ~ $ cd .. pull --rebase works when a specific revision is pulled (issue3619) $ cd a $ hg tglog @ 2: 77ae9631bcca 'R1' | o 1: 783333faa078 'C2' | o 0: 05d58a0c15dd 'C1' $ echo R2 > R2 $ hg ci -Am R2 adding R2 $ echo R3 > R3 $ hg ci -Am R3 adding R3 $ cd ../c $ hg tglog o 2: 77ae9631bcca 'R1' | @ 1: 783333faa078 'C2' | o 0: 05d58a0c15dd 'C1' $ echo L1 > L1 $ hg ci -Am L1 adding L1 created new head $ hg pull --rev tip --rebase pulling from $TESTTMP/a searching for changes adding changesets adding manifests adding file changes added 2 changesets with 2 changes to 2 files new changesets 31cd3a05214e:770a61882ace rebasing 3:ff8d69a621f9 "L1" saved backup bundle to $TESTTMP/c/.hg/strip-backup/ff8d69a621f9-160fa373-rebase.hg $ hg tglog @ 5: 518d153c0ba3 'L1' | o 4: 770a61882ace 'R3' | o 3: 31cd3a05214e 'R2' | o 2: 77ae9631bcca 'R1' | o 1: 783333faa078 'C2' | o 0: 05d58a0c15dd 'C1' pull --rebase works with bundle2 turned on $ cd ../a $ echo R4 > R4 $ hg ci -Am R4 adding R4 $ hg tglog @ 5: 00e3b7781125 'R4' | o 4: 770a61882ace 'R3' | o 3: 31cd3a05214e 'R2' | o 2: 77ae9631bcca 'R1' | o 1: 783333faa078 'C2' | o 0: 05d58a0c15dd 'C1' $ cd ../c $ hg pull --rebase pulling from $TESTTMP/a searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) new changesets 00e3b7781125 rebasing 5:518d153c0ba3 "L1" saved backup bundle to $TESTTMP/c/.hg/strip-backup/518d153c0ba3-73407f14-rebase.hg $ hg tglog @ 6: 0d0727eb7ce0 'L1' | o 5: 00e3b7781125 'R4' | o 4: 770a61882ace 'R3' | o 3: 31cd3a05214e 'R2' | o 2: 77ae9631bcca 'R1' | o 1: 783333faa078 'C2' | o 0: 05d58a0c15dd 'C1' pull --rebase only update if there is nothing to rebase $ cd ../a $ echo R5 > R5 $ hg ci -Am R5 adding R5 $ hg tglog @ 6: 88dd24261747 'R5' | o 5: 00e3b7781125 'R4' | o 4: 770a61882ace 'R3' | o 3: 31cd3a05214e 'R2' | o 2: 77ae9631bcca 'R1' | o 1: 783333faa078 'C2' | o 0: 05d58a0c15dd 'C1' $ cd ../c $ echo L2 > L2 $ hg ci -Am L2 adding L2 $ hg up 'desc(L1)' 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg pull --rebase pulling from $TESTTMP/a searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) new changesets 88dd24261747 rebasing 6:0d0727eb7ce0 "L1" rebasing 7:c1f58876e3bf "L2" saved backup bundle to $TESTTMP/c/.hg/strip-backup/0d0727eb7ce0-ef61ccb2-rebase.hg $ hg tglog o 8: 6dc0ea5dcf55 'L2' | @ 7: 864e0a2d2614 'L1' | o 6: 88dd24261747 'R5' | o 5: 00e3b7781125 'R4' | o 4: 770a61882ace 'R3' | o 3: 31cd3a05214e 'R2' | o 2: 77ae9631bcca 'R1' | o 1: 783333faa078 'C2' | o 0: 05d58a0c15dd 'C1' pull --rebase update (no rebase) use proper update: - warn about other head. $ cd ../a $ echo R6 > R6 $ hg ci -Am R6 adding R6 $ cd ../c $ hg up 'desc(R5)' 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg pull --rebase pulling from $TESTTMP/a searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) new changesets 65bc164c1d9b nothing to rebase - updating instead 1 files updated, 0 files merged, 0 files removed, 0 files unresolved updated to "65bc164c1d9b: R6" 1 other heads for branch "default" $ hg tglog @ 9: 65bc164c1d9b 'R6' | | o 8: 6dc0ea5dcf55 'L2' | | | o 7: 864e0a2d2614 'L1' |/ o 6: 88dd24261747 'R5' | o 5: 00e3b7781125 'R4' | o 4: 770a61882ace 'R3' | o 3: 31cd3a05214e 'R2' | o 2: 77ae9631bcca 'R1' | o 1: 783333faa078 'C2' | o 0: 05d58a0c15dd 'C1' Multiple pre-existing heads on the branch ----------------------------------------- Pull bring content, but nothing on the current branch, we should not consider pre-existing heads. $ cd ../a $ hg branch unrelatedbranch marked working directory as branch unrelatedbranch (branches are permanent and global, did you want a bookmark?) $ echo B1 > B1 $ hg commit -Am B1 adding B1 $ cd ../c $ hg up 'desc(L2)' 2 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg pull --rebase pulling from $TESTTMP/a searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files new changesets 39c381359968 nothing to rebase There is two local heads and we pull a third one. The second local head should not confuse the `hg pull rebase`. $ hg up 'desc(R6)' 1 files updated, 0 files merged, 2 files removed, 0 files unresolved $ echo M1 > M1 $ hg commit -Am M1 adding M1 $ cd ../a $ hg up 'desc(R6)' 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo R7 > R7 $ hg commit -Am R7 adding R7 $ cd ../c $ hg up 'desc(L2)' 2 files updated, 0 files merged, 2 files removed, 0 files unresolved $ hg pull --rebase pulling from $TESTTMP/a searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) new changesets f7d3e42052f9 rebasing 7:864e0a2d2614 "L1" rebasing 8:6dc0ea5dcf55 "L2" saved backup bundle to $TESTTMP/c/.hg/strip-backup/864e0a2d2614-2f72c89c-rebase.hg $ hg tglog @ 12: 3603a865eea0 'L2' | o 11: bcc8a9cd04bf 'L1' | o 10: f7d3e42052f9 'R7' | | o 9: 41fab4eef82f 'M1' |/ | o 8: 39c381359968 'B1' unrelatedbranch |/ o 7: 65bc164c1d9b 'R6' | o 6: 88dd24261747 'R5' | o 5: 00e3b7781125 'R4' | o 4: 770a61882ace 'R3' | o 3: 31cd3a05214e 'R2' | o 2: 77ae9631bcca 'R1' | o 1: 783333faa078 'C2' | o 0: 05d58a0c15dd 'C1'