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view tests/test-bundle2-multiple-changegroups.t @ 42044:bb271ec2fbfb

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compression: introduce a `storage.revlog.zstd.level` configuration This option control the zstd compression level used when compressing revlog chunk. The usage of zstd for revlog compression has not graduated from experimental yet, but we intend to fix that soon. The option name for the compression level is more straight forward to pick, so this changesets comes first. Having a dedicated option for each compression engine is useful because they don't support the same range of values. I ran the same measurement as for the zlib compression level (in the parent changesets). The variation in repository size is stay mostly in the same (small) range. The "read/write" performance see smallish variation, but are overall much better than zlib. Write performance show the same tend of having better write performance for when reaching high-end compression. Again, we don't intend to change the default zstd compression level (currently: 3) in this series. However this is worth investigating in the future. The Performance comparison of zlib vs zstd is quite impressive. The repository size stay in the same range, but the performance are much better in all situations. Comparison summary ================== We are looking at: - performance range for zlib - performance range for zstd - comparison of default zstd (level-3) to default zlib (level 6) - comparison of the slowest zstd time to the fastest zlib time Read performance: ----------------- | zlib | zstd | cmp | f2s mercurial | 0.170159 - 0.189219 | 0.144127 - 0.149624 | 80% | 88% pypy | 2.679217 - 2.768691 | 1.532317 - 1.705044 | 60% | 63% netbeans | 122.477027 - 141.620281 | 72.996346 - 89.731560 | 58% | 73% mozilla | 147.867662 - 170.572118 | 91.700995 - 105.853099 | 56% | 71% Write performance: ------------------ | zlib | zstd | cmp | f2s mercurial | 53.250304 - 56.2936129 | 40.877025 - 45.677286 | 75% | 86% pypy | 460.721984 - 476.589918 | 270.545409 - 301.002219 | 63% | 65% netbeans | 520.560316 - 715.930400 | 370.356311 - 428.329652 | 55% | 82% mozilla | 739.803002 - 987.056093 | 505.152906 - 591.930683 | 57% | 80% Raw data -------- repo alg lvl .hg/store size 00manifest.d read write mercurial zlib 1 49,402,813 5,963,475 0.170159 53.250304 mercurial zlib 6 47,197,397 5,875,730 0.182820 56.264320 mercurial zlib 9 47,121,596 5,849,781 0.189219 56.293612 mercurial zstd 1 49,737,084 5,966,355 0.144127 40.877025 mercurial zstd 3 48,961,867 5,895,208 0.146376 42.268142 mercurial zstd 5 48,200,592 5,938,676 0.149624 43.162875 mercurial zstd 10 47,833,520 5,913,353 0.145185 44.012489 mercurial zstd 15 47,314,604 5,728,679 0.147686 45.677286 mercurial zstd 20 47,330,502 5,830,539 0.145789 45.025407 mercurial zstd 22 47,330,076 5,830,539 0.143996 44.690460 pypy zlib 1 370,830,572 28,462,425 2.679217 460.721984 pypy zlib 6 340,112,317 27,648,747 2.768691 467.537158 pypy zlib 9 338,360,736 27,639,003 2.763495 476.589918 pypy zstd 1 362,377,479 27,916,214 1.532317 270.545409 pypy zstd 3 354,137,693 27,905,988 1.686718 294.951509 pypy zstd 5 342,640,043 27,655,774 1.705044 301.002219 pypy zstd 10 334,224,327 27,164,493 1.567287 285.186239 pypy zstd 15 329,000,363 26,645,965 1.637729 299.561332 pypy zstd 20 324,534,039 26,199,547 1.526813 302.149827 pypy zstd 22 324,530,595 26,198,932 1.525718 307.821218 netbeans zlib 1 1,281,847,810 165,495,457 122.477027 520.560316 netbeans zlib 6 1,205,284,353 159,161,207 139.876147 715.930400 netbeans zlib 9 1,197,135,671 155,034,586 141.620281 678.297064 netbeans zstd 1 1,259,581,737 160,840,613 72.996346 370.356311 netbeans zstd 3 1,232,978,122 157,691,551 81.622317 396.733087 netbeans zstd 5 1,208,034,075 160,246,880 83.080549 364.342626 netbeans zstd 10 1,188,624,176 156,083,417 79.323935 403.594602 netbeans zstd 15 1,176,973,589 153,859,477 89.731560 428.329652 netbeans zstd 20 1,162,958,258 151,147,535 82.842667 392.335349 netbeans zstd 22 1,162,707,029 151,150,220 82.565695 402.840655 mozilla zlib 1 2,775,497,186 298,527,987 147.867662 751.263721 mozilla zlib 6 2,596,856,420 286,597,671 170.572118 987.056093 mozilla zlib 9 2,587,542,494 287,018,264 163.622338 739.803002 mozilla zstd 1 2,723,159,348 286,617,532 91.700995 570.042751 mozilla zstd 3 2,665,055,001 286,152,013 95.240155 561.412805 mozilla zstd 5 2,607,819,817 288,060,030 101.978048 505.152906 mozilla zstd 10 2,558,761,085 283,967,648 104.113481 497.771202 mozilla zstd 15 2,526,216,060 275,581,300 105.853099 591.930683 mozilla zstd 20 2,485,114,806 266,478,859 95.268795 576.515389 mozilla zstd 22 2,484,869,080 266,456,505 94.429282 572.785537
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Wed, 27 Mar 2019 18:35:59 +0100
parents 94faa2e84094
children d7304434390f
line wrap: on
line source

Create an extension to test bundle2 with multiple changegroups

  $ cat > bundle2.py <<EOF
  > """
  > """
  > from mercurial import changegroup, discovery, exchange
  > 
  > def _getbundlechangegrouppart(bundler, repo, source, bundlecaps=None,
  >                               b2caps=None, heads=None, common=None,
  >                               **kwargs):
  >     # Create two changegroups given the common changesets and heads for the
  >     # changegroup part we are being requested. Use the parent of each head
  >     # in 'heads' as intermediate heads for the first changegroup.
  >     intermediates = [repo[r].p1().node() for r in heads]
  >     outgoing = discovery.outgoing(repo, common, intermediates)
  >     cg = changegroup.makechangegroup(repo, outgoing, b'01',
  >                                      source, bundlecaps=bundlecaps)
  >     bundler.newpart(b'output', data=b'changegroup1')
  >     bundler.newpart(b'changegroup', data=cg.getchunks())
  >     outgoing = discovery.outgoing(repo, common + intermediates, heads)
  >     cg = changegroup.makechangegroup(repo, outgoing, b'01',
  >                                      source, bundlecaps=bundlecaps)
  >     bundler.newpart(b'output', data=b'changegroup2')
  >     bundler.newpart(b'changegroup', data=cg.getchunks())
  > 
  > def _pull(repo, *args, **kwargs):
  >   pullop = _orig_pull(repo, *args, **kwargs)
  >   repo.ui.write(b'pullop.cgresult is %d\n' % pullop.cgresult)
  >   return pullop
  > 
  > _orig_pull = exchange.pull
  > exchange.pull = _pull
  > exchange.getbundle2partsmapping[b'changegroup'] = _getbundlechangegrouppart
  > EOF

  $ cat >> $HGRCPATH << EOF
  > [ui]
  > logtemplate={rev}:{node|short} {phase} {author} {bookmarks} {desc|firstline}
  > EOF

Start with a simple repository with a single commit

  $ hg init repo
  $ cd repo
  $ cat > .hg/hgrc << EOF
  > [extensions]
  > bundle2=$TESTTMP/bundle2.py
  > EOF

  $ echo A > A
  $ hg commit -A -m A -q
  $ cd ..

Clone

  $ hg clone -q repo clone

Add two linear commits

  $ cd repo
  $ echo B > B
  $ hg commit -A -m B -q
  $ echo C > C
  $ hg commit -A -m C -q

  $ cd ../clone
  $ cat >> .hg/hgrc <<EOF
  > [hooks]
  > pretxnchangegroup = sh -c "printenv.py --line pretxnchangegroup"
  > changegroup = sh -c "printenv.py --line changegroup"
  > incoming = sh -c "printenv.py --line incoming"
  > EOF

Pull the new commits in the clone

  $ hg pull
  pulling from $TESTTMP/repo
  searching for changes
  remote: changegroup1
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  pretxnchangegroup hook: HG_HOOKNAME=pretxnchangegroup
  HG_HOOKTYPE=pretxnchangegroup
  HG_NODE=27547f69f25460a52fff66ad004e58da7ad3fb56
  HG_NODE_LAST=27547f69f25460a52fff66ad004e58da7ad3fb56
  HG_PENDING=$TESTTMP/clone
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  remote: changegroup2
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  pretxnchangegroup hook: HG_HOOKNAME=pretxnchangegroup
  HG_HOOKTYPE=pretxnchangegroup
  HG_NODE=f838bfaca5c7226600ebcfd84f3c3c13a28d3757
  HG_NODE_LAST=f838bfaca5c7226600ebcfd84f3c3c13a28d3757
  HG_PENDING=$TESTTMP/clone
  HG_PHASES_MOVED=1
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  new changesets 27547f69f254:f838bfaca5c7
  changegroup hook: HG_HOOKNAME=changegroup
  HG_HOOKTYPE=changegroup
  HG_NODE=27547f69f25460a52fff66ad004e58da7ad3fb56
  HG_NODE_LAST=27547f69f25460a52fff66ad004e58da7ad3fb56
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  incoming hook: HG_HOOKNAME=incoming
  HG_HOOKTYPE=incoming
  HG_NODE=27547f69f25460a52fff66ad004e58da7ad3fb56
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  changegroup hook: HG_HOOKNAME=changegroup
  HG_HOOKTYPE=changegroup
  HG_NODE=f838bfaca5c7226600ebcfd84f3c3c13a28d3757
  HG_NODE_LAST=f838bfaca5c7226600ebcfd84f3c3c13a28d3757
  HG_PHASES_MOVED=1
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  incoming hook: HG_HOOKNAME=incoming
  HG_HOOKTYPE=incoming
  HG_NODE=f838bfaca5c7226600ebcfd84f3c3c13a28d3757
  HG_PHASES_MOVED=1
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  pullop.cgresult is 1
  (run 'hg update' to get a working copy)
  $ hg update
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg log -G
  @  2:f838bfaca5c7 public test  C
  |
  o  1:27547f69f254 public test  B
  |
  o  0:4a2df7238c3b public test  A
  
Add more changesets with multiple heads to the original repository

  $ cd ../repo
  $ echo D > D
  $ hg commit -A -m D -q
  $ hg up -r 1
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ echo E > E
  $ hg commit -A -m E -q
  $ echo F > F
  $ hg commit -A -m F -q
  $ hg up -r 1
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ echo G > G
  $ hg commit -A -m G -q
  $ hg up -r 3
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo H > H
  $ hg commit -A -m H -q
  $ hg log -G
  @  7:5cd59d311f65 draft test  H
  |
  | o  6:1d14c3ce6ac0 draft test  G
  | |
  | | o  5:7f219660301f draft test  F
  | | |
  | | o  4:8a5212ebc852 draft test  E
  | |/
  o |  3:b3325c91a4d9 draft test  D
  | |
  o |  2:f838bfaca5c7 draft test  C
  |/
  o  1:27547f69f254 draft test  B
  |
  o  0:4a2df7238c3b draft test  A
  
New heads are reported during transfer and properly accounted for in
pullop.cgresult

  $ cd ../clone
  $ hg pull
  pulling from $TESTTMP/repo
  searching for changes
  remote: changegroup1
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 2 files (+1 heads)
  pretxnchangegroup hook: HG_HOOKNAME=pretxnchangegroup
  HG_HOOKTYPE=pretxnchangegroup
  HG_NODE=b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e
  HG_NODE_LAST=8a5212ebc8527f9fb821601504794e3eb11a1ed3
  HG_PENDING=$TESTTMP/clone
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  remote: changegroup2
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 3 changes to 3 files (+1 heads)
  pretxnchangegroup hook: HG_HOOKNAME=pretxnchangegroup
  HG_HOOKTYPE=pretxnchangegroup
  HG_NODE=7f219660301fe4c8a116f714df5e769695cc2b46
  HG_NODE_LAST=5cd59d311f6508b8e0ed28a266756c859419c9f1
  HG_PENDING=$TESTTMP/clone
  HG_PHASES_MOVED=1
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  new changesets b3325c91a4d9:5cd59d311f65
  changegroup hook: HG_HOOKNAME=changegroup
  HG_HOOKTYPE=changegroup
  HG_NODE=b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e
  HG_NODE_LAST=8a5212ebc8527f9fb821601504794e3eb11a1ed3
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  incoming hook: HG_HOOKNAME=incoming
  HG_HOOKTYPE=incoming
  HG_NODE=b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  incoming hook: HG_HOOKNAME=incoming
  HG_HOOKTYPE=incoming
  HG_NODE=8a5212ebc8527f9fb821601504794e3eb11a1ed3
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  changegroup hook: HG_HOOKNAME=changegroup
  HG_HOOKTYPE=changegroup
  HG_NODE=7f219660301fe4c8a116f714df5e769695cc2b46
  HG_NODE_LAST=5cd59d311f6508b8e0ed28a266756c859419c9f1
  HG_PHASES_MOVED=1
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  incoming hook: HG_HOOKNAME=incoming
  HG_HOOKTYPE=incoming
  HG_NODE=7f219660301fe4c8a116f714df5e769695cc2b46
  HG_PHASES_MOVED=1
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  incoming hook: HG_HOOKNAME=incoming
  HG_HOOKTYPE=incoming
  HG_NODE=1d14c3ce6ac0582d2809220d33e8cd7a696e0156
  HG_PHASES_MOVED=1
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  incoming hook: HG_HOOKNAME=incoming
  HG_HOOKTYPE=incoming
  HG_NODE=5cd59d311f6508b8e0ed28a266756c859419c9f1
  HG_PHASES_MOVED=1
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  pullop.cgresult is 3
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg log -G
  o  7:5cd59d311f65 public test  H
  |
  | o  6:1d14c3ce6ac0 public test  G
  | |
  | | o  5:7f219660301f public test  F
  | | |
  | | o  4:8a5212ebc852 public test  E
  | |/
  o |  3:b3325c91a4d9 public test  D
  | |
  @ |  2:f838bfaca5c7 public test  C
  |/
  o  1:27547f69f254 public test  B
  |
  o  0:4a2df7238c3b public test  A
  
Removing a head from the original repository by merging it

  $ cd ../repo
  $ hg merge -r 6 -q
  $ hg commit -m Merge
  $ echo I > I
  $ hg commit -A -m H -q
  $ hg log -G
  @  9:9d18e5bd9ab0 draft test  H
  |
  o    8:71bd7b46de72 draft test  Merge
  |\
  | o  7:5cd59d311f65 draft test  H
  | |
  o |  6:1d14c3ce6ac0 draft test  G
  | |
  | | o  5:7f219660301f draft test  F
  | | |
  +---o  4:8a5212ebc852 draft test  E
  | |
  | o  3:b3325c91a4d9 draft test  D
  | |
  | o  2:f838bfaca5c7 draft test  C
  |/
  o  1:27547f69f254 draft test  B
  |
  o  0:4a2df7238c3b draft test  A
  
Removed heads are reported during transfer and properly accounted for in
pullop.cgresult

  $ cd ../clone
  $ hg pull
  pulling from $TESTTMP/repo
  searching for changes
  remote: changegroup1
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 0 changes to 0 files (-1 heads)
  pretxnchangegroup hook: HG_HOOKNAME=pretxnchangegroup
  HG_HOOKTYPE=pretxnchangegroup
  HG_NODE=71bd7b46de72e69a32455bf88d04757d542e6cf4
  HG_NODE_LAST=71bd7b46de72e69a32455bf88d04757d542e6cf4
  HG_PENDING=$TESTTMP/clone
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  remote: changegroup2
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  pretxnchangegroup hook: HG_HOOKNAME=pretxnchangegroup
  HG_HOOKTYPE=pretxnchangegroup
  HG_NODE=9d18e5bd9ab09337802595d49f1dad0c98df4d84
  HG_NODE_LAST=9d18e5bd9ab09337802595d49f1dad0c98df4d84
  HG_PENDING=$TESTTMP/clone
  HG_PHASES_MOVED=1
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  new changesets 71bd7b46de72:9d18e5bd9ab0
  changegroup hook: HG_HOOKNAME=changegroup
  HG_HOOKTYPE=changegroup
  HG_NODE=71bd7b46de72e69a32455bf88d04757d542e6cf4
  HG_NODE_LAST=71bd7b46de72e69a32455bf88d04757d542e6cf4
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  incoming hook: HG_HOOKNAME=incoming
  HG_HOOKTYPE=incoming
  HG_NODE=71bd7b46de72e69a32455bf88d04757d542e6cf4
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  changegroup hook: HG_HOOKNAME=changegroup
  HG_HOOKTYPE=changegroup
  HG_NODE=9d18e5bd9ab09337802595d49f1dad0c98df4d84
  HG_NODE_LAST=9d18e5bd9ab09337802595d49f1dad0c98df4d84
  HG_PHASES_MOVED=1
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  incoming hook: HG_HOOKNAME=incoming
  HG_HOOKTYPE=incoming
  HG_NODE=9d18e5bd9ab09337802595d49f1dad0c98df4d84
  HG_PHASES_MOVED=1
  HG_SOURCE=pull
  HG_TXNID=TXN:$ID$
  HG_TXNNAME=pull
  file:/*/$TESTTMP/repo (glob)
  HG_URL=file:$TESTTMP/repo
  
  pullop.cgresult is -2
  (run 'hg update' to get a working copy)
  $ hg log -G
  o  9:9d18e5bd9ab0 public test  H
  |
  o    8:71bd7b46de72 public test  Merge
  |\
  | o  7:5cd59d311f65 public test  H
  | |
  o |  6:1d14c3ce6ac0 public test  G
  | |
  | | o  5:7f219660301f public test  F
  | | |
  +---o  4:8a5212ebc852 public test  E
  | |
  | o  3:b3325c91a4d9 public test  D
  | |
  | @  2:f838bfaca5c7 public test  C
  |/
  o  1:27547f69f254 public test  B
  |
  o  0:4a2df7238c3b public test  A