mirror of
https://github.com/facebook/sapling.git
synced 2024-10-10 16:57:49 +03:00
667d10975b
Revlog can now be configured to store full snapshot only. This is used on the changelog. However, the changegroup packing was still recomputing deltas to be sent over the wire. We now just reuse the full snapshot directly in this case, skipping delta computation. This provides use with a large speed up(-30%): # perfchangegroupchangelog on mercurial ! wall 2.010326 comb 2.020000 user 2.000000 sys 0.020000 (best of 5) ! wall 1.382039 comb 1.380000 user 1.370000 sys 0.010000 (best of 8) # perfchangegroupchangelog on pypy ! wall 5.792589 comb 5.780000 user 5.780000 sys 0.000000 (best of 3) ! wall 3.911158 comb 3.920000 user 3.900000 sys 0.020000 (best of 3) # perfchangegroupchangelog on mozilla central ! wall 20.683727 comb 20.680000 user 20.630000 sys 0.050000 (best of 3) ! wall 14.190204 comb 14.190000 user 14.150000 sys 0.040000 (best of 3) Many tests have to be updated because of the change in bundle content. All theses update have been verified. Because diffing changelog was not very valuable, the resulting bundle have similar size (often a bit smaller): # full bundle of mozilla central with delta: 1142740533B without delta: 1142173300B So this is a win all over the board.
337 lines
7.9 KiB
Perl
337 lines
7.9 KiB
Perl
$ cat >> $HGRCPATH <<EOF
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> [format]
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> usegeneraldelta=yes
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> [extensions]
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> rebase=
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>
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> [alias]
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> tglog = log -G --template "{rev}: '{desc}' {branches}\n"
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> EOF
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$ hg init repo
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$ cd repo
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$ echo A > a
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$ echo >> a
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$ hg ci -Am A
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adding a
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$ echo B > a
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$ echo >> a
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$ hg ci -m B
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$ echo C > a
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$ echo >> a
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$ hg ci -m C
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$ hg up -q -C 0
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$ echo D >> a
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$ hg ci -Am AD
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created new head
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$ hg tglog
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@ 3: 'AD'
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| o 2: 'C'
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| |
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| o 1: 'B'
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|/
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o 0: 'A'
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$ hg rebase -s 1 -d 3
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rebasing 1:0f4f7cb4f549 "B"
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merging a
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rebasing 2:30ae917c0e4f "C"
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merging a
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saved backup bundle to $TESTTMP/repo/.hg/strip-backup/0f4f7cb4f549-82b3b163-backup.hg (glob)
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$ hg tglog
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o 3: 'C'
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o 2: 'B'
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@ 1: 'AD'
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o 0: 'A'
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$ cd ..
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Test rebasing of merges with ancestors of the rebase destination - a situation
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that often happens when trying to recover from repeated merging with a mainline
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branch.
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The test case creates a dev branch that contains a couple of merges from the
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default branch. When rebasing to the default branch, these merges would be
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merges with ancestors on the same branch. The merges _could_ contain some
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interesting conflict resolutions or additional changes in the merge commit, but
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that is mixed up with the actual merge stuff and there is in general no way to
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separate them.
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Note: The dev branch contains _no_ changes to f-default. It might be unclear
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how rebasing of ancestor merges should be handled, but the current behavior
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with spurious prompts for conflicts in files that didn't change seems very
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wrong.
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$ hg init ancestor-merge
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$ cd ancestor-merge
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$ touch f-default
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$ hg ci -Aqm 'default: create f-default'
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$ hg branch -q dev
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$ hg ci -qm 'dev: create branch'
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$ echo stuff > f-dev
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$ hg ci -Aqm 'dev: f-dev stuff'
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$ hg up -q default
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$ echo stuff > f-default
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$ hg ci -m 'default: f-default stuff'
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$ hg up -q dev
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$ hg merge -q default
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$ hg ci -m 'dev: merge default'
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$ hg up -q default
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$ hg rm f-default
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$ hg ci -m 'default: remove f-default'
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$ hg up -q dev
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$ hg merge -q default
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$ hg ci -m 'dev: merge default'
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$ hg up -q default
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$ echo stuff > f-other
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$ hg ci -Aqm 'default: f-other stuff'
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$ hg tglog
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@ 7: 'default: f-other stuff'
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| o 6: 'dev: merge default' dev
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|/|
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o | 5: 'default: remove f-default'
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| |
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| o 4: 'dev: merge default' dev
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|/|
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o | 3: 'default: f-default stuff'
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| |
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| o 2: 'dev: f-dev stuff' dev
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| o 1: 'dev: create branch' dev
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|/
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o 0: 'default: create f-default'
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$ hg clone -qU . ../ancestor-merge-2
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Full rebase all the way back from branching point:
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$ hg rebase -r 'only(dev,default)' -d default --config ui.interactive=True << EOF
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> c
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> EOF
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rebasing 1:1d1a643d390e "dev: create branch"
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note: rebase of 1:1d1a643d390e created no changes to commit
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rebasing 2:ec2c14fb2984 "dev: f-dev stuff"
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rebasing 4:4b019212aaf6 "dev: merge default"
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other [source] changed f-default which local [dest] deleted
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use (c)hanged version, leave (d)eleted, or leave (u)nresolved? c
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rebasing 6:9455ee510502 "dev: merge default"
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saved backup bundle to $TESTTMP/ancestor-merge/.hg/strip-backup/1d1a643d390e-43e9e04b-backup.hg (glob)
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$ hg tglog
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o 6: 'dev: merge default'
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o 5: 'dev: merge default'
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o 4: 'dev: f-dev stuff'
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@ 3: 'default: f-other stuff'
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o 2: 'default: remove f-default'
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o 1: 'default: f-default stuff'
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o 0: 'default: create f-default'
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Grafty cherry picking rebasing:
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$ cd ../ancestor-merge-2
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$ hg phase -fdr0:
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$ hg rebase -r 'children(only(dev,default))' -d default --config ui.interactive=True << EOF
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> c
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> EOF
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rebasing 2:ec2c14fb2984 "dev: f-dev stuff"
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rebasing 4:4b019212aaf6 "dev: merge default"
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other [source] changed f-default which local [dest] deleted
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use (c)hanged version, leave (d)eleted, or leave (u)nresolved? c
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rebasing 6:9455ee510502 "dev: merge default"
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saved backup bundle to $TESTTMP/ancestor-merge-2/.hg/strip-backup/ec2c14fb2984-62d0b222-backup.hg (glob)
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$ hg tglog
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o 7: 'dev: merge default'
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o 6: 'dev: merge default'
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o 5: 'dev: f-dev stuff'
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o 4: 'default: f-other stuff'
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o 3: 'default: remove f-default'
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o 2: 'default: f-default stuff'
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| o 1: 'dev: create branch' dev
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|/
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o 0: 'default: create f-default'
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$ cd ..
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Test order of parents of rebased merged with un-rebased changes as p1.
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$ hg init parentorder
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$ cd parentorder
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$ touch f
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$ hg ci -Aqm common
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$ touch change
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$ hg ci -Aqm change
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$ touch target
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$ hg ci -Aqm target
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$ hg up -qr 0
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$ touch outside
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$ hg ci -Aqm outside
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$ hg merge -qr 1
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$ hg ci -m 'merge p1 3=outside p2 1=ancestor'
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$ hg par
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changeset: 4:6990226659be
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tag: tip
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parent: 3:f59da8fc0fcf
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parent: 1:dd40c13f7a6f
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: merge p1 3=outside p2 1=ancestor
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$ hg up -qr 1
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$ hg merge -qr 3
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$ hg ci -qm 'merge p1 1=ancestor p2 3=outside'
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$ hg par
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changeset: 5:a57575f79074
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tag: tip
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parent: 1:dd40c13f7a6f
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parent: 3:f59da8fc0fcf
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: merge p1 1=ancestor p2 3=outside
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$ hg tglog
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@ 5: 'merge p1 1=ancestor p2 3=outside'
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+---o 4: 'merge p1 3=outside p2 1=ancestor'
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| |/
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| o 3: 'outside'
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+---o 2: 'target'
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o | 1: 'change'
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|/
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o 0: 'common'
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$ hg rebase -r 4 -d 2
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rebasing 4:6990226659be "merge p1 3=outside p2 1=ancestor"
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saved backup bundle to $TESTTMP/parentorder/.hg/strip-backup/6990226659be-4d67a0d3-backup.hg (glob)
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$ hg tip
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changeset: 5:cca50676b1c5
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tag: tip
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parent: 2:a60552eb93fb
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parent: 3:f59da8fc0fcf
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: merge p1 3=outside p2 1=ancestor
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$ hg rebase -r 4 -d 2
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rebasing 4:a57575f79074 "merge p1 1=ancestor p2 3=outside"
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saved backup bundle to $TESTTMP/parentorder/.hg/strip-backup/a57575f79074-385426e5-backup.hg (glob)
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$ hg tip
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changeset: 5:f9daf77ffe76
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tag: tip
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parent: 2:a60552eb93fb
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parent: 3:f59da8fc0fcf
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: merge p1 1=ancestor p2 3=outside
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$ hg tglog
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@ 5: 'merge p1 1=ancestor p2 3=outside'
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+---o 4: 'merge p1 3=outside p2 1=ancestor'
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| |/
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| o 3: 'outside'
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o | 2: 'target'
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o | 1: 'change'
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|/
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o 0: 'common'
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rebase of merge of ancestors
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$ hg up -qr 2
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$ hg merge -qr 3
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$ echo 'other change while merging future "rebase ancestors"' > other
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$ hg ci -Aqm 'merge rebase ancestors'
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$ hg rebase -d 5 -v
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rebasing 6:4c5f12f25ebe "merge rebase ancestors" (tip)
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resolving manifests
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removing other
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note: merging f9daf77ffe76+ and 4c5f12f25ebe using bids from ancestors a60552eb93fb and f59da8fc0fcf
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calculating bids for ancestor a60552eb93fb
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resolving manifests
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calculating bids for ancestor f59da8fc0fcf
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resolving manifests
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auction for merging merge bids
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other: consensus for g
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end of auction
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getting other
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committing files:
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other
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committing manifest
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committing changelog
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rebase merging completed
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1 changesets found
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uncompressed size of bundle content:
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199 (changelog)
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216 (manifests)
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182 other
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saved backup bundle to $TESTTMP/parentorder/.hg/strip-backup/4c5f12f25ebe-f46990e5-backup.hg (glob)
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1 changesets found
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uncompressed size of bundle content:
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254 (changelog)
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167 (manifests)
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182 other
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adding branch
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adding changesets
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adding manifests
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adding file changes
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added 1 changesets with 1 changes to 1 files
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rebase completed
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$ hg tglog
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@ 6: 'merge rebase ancestors'
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o 5: 'merge p1 1=ancestor p2 3=outside'
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+---o 4: 'merge p1 3=outside p2 1=ancestor'
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| |/
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| o 3: 'outside'
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o | 2: 'target'
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o | 1: 'change'
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|/
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o 0: 'common'
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