Mercurial > hg
view tests/test-rebase-interruptions.t @ 42743:8c9a6adec67a
rust-discovery: using the children cache in add_missing
The DAG range computation often needs to get back to very old
revisions, and turns out to be disproportionately long, given
that the end goal is to remove the descendents of the given
missing revisons from the undecided set.
The fast iteration capabilities available in the Rust case make
it possible to avoid the DAG range entirely, at the cost of
precomputing the children cache, and to simply iterate on
children of the given missing revisions.
This is a case where staying on the same side of the interface
between the two languages has clear benefits.
On discoveries with initial undecided sets
small enough to bypass sampling entirely, the total cost of
computing the children cache and the subsequent iteration
becomes better than the Python + C counterpart, which relies on
reachableroots2.
For example, on a repo with more than one million revisions with
an initial undecided set of 11 elements, we get these figures:
Rust version with simple iteration
addcommons: 57.287us
first undecided computation: 184.278334ms
first children cache computation: 131.056us
addmissings iteration: 42.766us
first addinfo total: 185.24 ms
Python + C version
first addcommons: 0.29 ms
addcommons 0.21 ms
first undecided computation 191.35 ms
addmissings 45.75 ms
first addinfo total: 237.77 ms
On discoveries with large undecided sets, the initial price paid
makes the first addinfo slower than the Python + C version,
but that's more than compensated by the gain in sampling and
subsequent iterations.
Here's an extreme example with an undecided set of a million revisions:
Rust version:
first undecided computation: 293.842629ms
first children cache computation: 407.911297ms
addmissings iteration: 34.312869ms
first addinfo total: 776.02 ms
taking initial sample
query 2: sampling time: 1318.38 ms
query 2; still undecided: 1005013, sample size is: 200
addmissings: 143.062us
Python + C version:
first undecided computation 298.13 ms
addmissings 80.13 ms
first addinfo total: 399.62 ms
taking initial sample
query 2: sampling time: 3957.23 ms
query 2; still undecided: 1005013, sample size is: 200
addmissings 52.88 ms
Differential Revision: https://phab.mercurial-scm.org/D6428
author | Georges Racinet <georges.racinet@octobus.net> |
---|---|
date | Tue, 16 Apr 2019 01:16:39 +0200 |
parents | 4edd427f34c1 |
children | 9c9cfecd4600 |
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$ cat >> $HGRCPATH <<EOF > [extensions] > rebase= > > [phases] > publish=False > > [alias] > tglog = log -G --template "{rev}: {node|short} '{desc}' {branches}\n" > tglogp = log -G --template "{rev}: {node|short} {phase} '{desc}' {branches}\n" > EOF $ hg init a $ cd a $ echo A > A $ hg ci -Am A adding A $ echo B > B $ hg ci -Am B adding B $ echo C >> A $ hg ci -m C $ hg up -q -C 0 $ echo D >> A $ hg ci -m D created new head $ echo E > E $ hg ci -Am E adding E $ cd .. Changes during an interruption - continue: $ hg clone -q -u . a a1 $ cd a1 $ hg tglog @ 4: ae36e8e3dfd7 'E' | o 3: 46b37eabc604 'D' | | o 2: 965c486023db 'C' | | | o 1: 27547f69f254 'B' |/ o 0: 4a2df7238c3b 'A' Rebasing B onto E: $ hg rebase -s 1 -d 4 rebasing 1:27547f69f254 "B" rebasing 2:965c486023db "C" merging A warning: conflicts while merging A! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] Force a commit on C during the interruption: $ hg up -q -C 2 --config 'extensions.rebase=!' $ echo 'Extra' > Extra $ hg add Extra $ hg ci -m 'Extra' --config 'extensions.rebase=!' Force this commit onto secret phase $ hg phase --force --secret 6 $ hg tglogp @ 6: deb5d2f93d8b secret 'Extra' | | o 5: 45396c49d53b draft 'B' | | | o 4: ae36e8e3dfd7 draft 'E' | | | o 3: 46b37eabc604 draft 'D' | | o | 2: 965c486023db draft 'C' | | o | 1: 27547f69f254 draft 'B' |/ o 0: 4a2df7238c3b draft 'A' Resume the rebasing: $ hg rebase --continue already rebased 1:27547f69f254 "B" as 45396c49d53b rebasing 2:965c486023db "C" merging A warning: conflicts while merging A! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] Solve the conflict and go on: $ echo 'conflict solved' > A $ rm A.orig $ hg resolve -m A (no more unresolved files) continue: hg rebase --continue $ hg rebase --continue already rebased 1:27547f69f254 "B" as 45396c49d53b rebasing 2:965c486023db "C" warning: orphaned descendants detected, not stripping 27547f69f254, 965c486023db $ hg tglogp o 7: d2d25e26288e draft 'C' | | o 6: deb5d2f93d8b secret 'Extra' | | o | 5: 45396c49d53b draft 'B' | | @ | 4: ae36e8e3dfd7 draft 'E' | | o | 3: 46b37eabc604 draft 'D' | | | o 2: 965c486023db draft 'C' | | | o 1: 27547f69f254 draft 'B' |/ o 0: 4a2df7238c3b draft 'A' $ cd .. Changes during an interruption - abort: $ hg clone -q -u . a a2 $ cd a2 $ hg tglog @ 4: ae36e8e3dfd7 'E' | o 3: 46b37eabc604 'D' | | o 2: 965c486023db 'C' | | | o 1: 27547f69f254 'B' |/ o 0: 4a2df7238c3b 'A' Rebasing B onto E: $ hg rebase -s 1 -d 4 rebasing 1:27547f69f254 "B" rebasing 2:965c486023db "C" merging A warning: conflicts while merging A! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] Force a commit on B' during the interruption: $ hg up -q -C 5 --config 'extensions.rebase=!' $ echo 'Extra' > Extra $ hg add Extra $ hg ci -m 'Extra' --config 'extensions.rebase=!' $ hg tglog @ 6: 402ee3642b59 'Extra' | o 5: 45396c49d53b 'B' | o 4: ae36e8e3dfd7 'E' | o 3: 46b37eabc604 'D' | | o 2: 965c486023db 'C' | | | o 1: 27547f69f254 'B' |/ o 0: 4a2df7238c3b 'A' Abort the rebasing: $ hg rebase --abort warning: new changesets detected on destination branch, can't strip rebase aborted $ hg tglog @ 6: 402ee3642b59 'Extra' | o 5: 45396c49d53b 'B' | o 4: ae36e8e3dfd7 'E' | o 3: 46b37eabc604 'D' | | o 2: 965c486023db 'C' | | | o 1: 27547f69f254 'B' |/ o 0: 4a2df7238c3b 'A' $ cd .. Changes during an interruption - abort (again): $ hg clone -q -u . a a3 $ cd a3 $ hg tglogp @ 4: ae36e8e3dfd7 draft 'E' | o 3: 46b37eabc604 draft 'D' | | o 2: 965c486023db draft 'C' | | | o 1: 27547f69f254 draft 'B' |/ o 0: 4a2df7238c3b draft 'A' Rebasing B onto E: $ hg rebase -s 1 -d 4 rebasing 1:27547f69f254 "B" rebasing 2:965c486023db "C" merging A warning: conflicts while merging A! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] Change phase on B and B' $ hg up -q -C 5 --config 'extensions.rebase=!' $ hg phase --public 1 $ hg phase --public 5 $ hg phase --secret -f 2 $ hg tglogp @ 5: 45396c49d53b public 'B' | o 4: ae36e8e3dfd7 public 'E' | o 3: 46b37eabc604 public 'D' | | o 2: 965c486023db secret 'C' | | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' Abort the rebasing: $ hg rebase --abort warning: can't clean up public changesets 45396c49d53b rebase aborted $ hg tglogp @ 5: 45396c49d53b public 'B' | o 4: ae36e8e3dfd7 public 'E' | o 3: 46b37eabc604 public 'D' | | o 2: 965c486023db secret 'C' | | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' Test rebase interrupted by hooks $ hg up 2 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo F > F $ hg add F $ hg ci -m F $ cd .. (precommit version) $ cp -R a3 hook-precommit $ cd hook-precommit $ hg rebase --source 2 --dest 5 --tool internal:other --config 'hooks.precommit=hg status | grep "M A"' rebasing 2:965c486023db "C" M A rebasing 6:a0b2430ebfb8 "F" (tip) abort: precommit hook exited with status 1 [255] $ hg tglogp @ 7: 401ccec5e39f secret 'C' | | @ 6: a0b2430ebfb8 secret 'F' | | o | 5: 45396c49d53b public 'B' | | o | 4: ae36e8e3dfd7 public 'E' | | o | 3: 46b37eabc604 public 'D' | | | o 2: 965c486023db secret 'C' | | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' $ hg rebase --continue already rebased 2:965c486023db "C" as 401ccec5e39f rebasing 6:a0b2430ebfb8 "F" saved backup bundle to $TESTTMP/hook-precommit/.hg/strip-backup/965c486023db-aa6250e7-rebase.hg $ hg tglogp @ 6: 6e92a149ac6b secret 'F' | o 5: 401ccec5e39f secret 'C' | o 4: 45396c49d53b public 'B' | o 3: ae36e8e3dfd7 public 'E' | o 2: 46b37eabc604 public 'D' | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' $ cd .. (pretxncommit version) $ cp -R a3 hook-pretxncommit $ cd hook-pretxncommit $ hg rebase --source 2 --dest 5 --tool internal:other \ > --config 'hooks.tonative.pretxncommit=True' --config 'hooks.pretxncommit=hg log -r $HG_NODE | grep "summary: C"' rebasing 2:965c486023db "C" summary: C rebasing 6:a0b2430ebfb8 "F" (tip) transaction abort! rollback completed abort: pretxncommit hook exited with status 1 [255] $ hg tglogp @ 7: 401ccec5e39f secret 'C' | | @ 6: a0b2430ebfb8 secret 'F' | | o | 5: 45396c49d53b public 'B' | | o | 4: ae36e8e3dfd7 public 'E' | | o | 3: 46b37eabc604 public 'D' | | | o 2: 965c486023db secret 'C' | | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' $ hg rebase --continue already rebased 2:965c486023db "C" as 401ccec5e39f rebasing 6:a0b2430ebfb8 "F" saved backup bundle to $TESTTMP/hook-pretxncommit/.hg/strip-backup/965c486023db-aa6250e7-rebase.hg $ hg tglogp @ 6: 6e92a149ac6b secret 'F' | o 5: 401ccec5e39f secret 'C' | o 4: 45396c49d53b public 'B' | o 3: ae36e8e3dfd7 public 'E' | o 2: 46b37eabc604 public 'D' | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' $ cd .. (pretxnclose version) $ cp -R a3 hook-pretxnclose $ cd hook-pretxnclose $ hg rebase --source 2 --dest 5 --tool internal:other --config 'hooks.pretxnclose=hg log -r tip | grep "summary: C"' rebasing 2:965c486023db "C" summary: C rebasing 6:a0b2430ebfb8 "F" (tip) transaction abort! rollback completed abort: pretxnclose hook exited with status 1 [255] $ hg tglogp @ 7: 401ccec5e39f secret 'C' | | @ 6: a0b2430ebfb8 secret 'F' | | o | 5: 45396c49d53b public 'B' | | o | 4: ae36e8e3dfd7 public 'E' | | o | 3: 46b37eabc604 public 'D' | | | o 2: 965c486023db secret 'C' | | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' $ hg rebase --continue already rebased 2:965c486023db "C" as 401ccec5e39f rebasing 6:a0b2430ebfb8 "F" saved backup bundle to $TESTTMP/hook-pretxnclose/.hg/strip-backup/965c486023db-aa6250e7-rebase.hg $ hg tglogp @ 6: 6e92a149ac6b secret 'F' | o 5: 401ccec5e39f secret 'C' | o 4: 45396c49d53b public 'B' | o 3: ae36e8e3dfd7 public 'E' | o 2: 46b37eabc604 public 'D' | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' $ cd .. Make sure merge state is cleaned up after a no-op rebase merge (issue5494) $ hg init repo $ cd repo $ echo a > a $ hg commit -qAm base $ echo b >> a $ hg commit -qm b $ hg up '.^' 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo c >> a $ hg commit -qm c $ hg rebase -s 1 -d 2 --noninteractive rebasing 1:fdaca8533b86 "b" merging a warning: conflicts while merging a! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] $ echo a > a $ echo c >> a $ hg resolve --mark a (no more unresolved files) continue: hg rebase --continue $ hg rebase --continue rebasing 1:fdaca8533b86 "b" note: not rebasing 1:fdaca8533b86 "b", its destination already has all its changes saved backup bundle to $TESTTMP/repo/.hg/strip-backup/fdaca8533b86-7fd70513-rebase.hg $ hg resolve --list $ test -d .hg/merge [1] Now try again with --collapse $ hg unbundle -q .hg/strip-backup/fdaca8533b86-7fd70513-rebase.hg $ hg rebase -s 2 -d 1 --noninteractive --collapse rebasing 2:fdaca8533b86 "b" (tip) merging a warning: conflicts while merging a! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] $ echo a > a $ echo c >> a $ hg resolve --mark a (no more unresolved files) continue: hg rebase --continue $ hg rebase --continue rebasing 2:fdaca8533b86 "b" (tip) saved backup bundle to $TESTTMP/repo/.hg/strip-backup/fdaca8533b86-7fd70513-rebase.hg $ hg resolve --list $ test -d .hg/merge [1]