view tests/test-contrib-perf.t @ 50195:11e6eee4b063

transaction: use the standard transaction mechanism to backup branch

Branch is a bit special :
- It currently does not collaborate with the transaction (or any scoping) for
  writing (this is bad)
- It can change without the lock being taken (it is protected by `wlock`)

So we rely on the same mechanism as for the backup of the other dirstate file:
- we only do a backup if we hold the wlock
- we force a backup though the transaction


Since "branch" write does not collaborate with the transaction, we cannot back
it up "at the last minute" as we do for the dirstate. We have to back it up
"upfront". Since we have a backup, the transaction is no longer doing its
"quick_abort" and get noisy. Which is quite annoying. To work around this, and
to avoid jumping in yet-another-rabbit-hole of "getting branch written
properly", I am doing horrible things to the transaction in the meantime.
We should be able to get this code go away during the next cycle.

In the meantime, I prefer to take this small stop so that we stop abusing the
"journal" and "undo" mechanism instead of the proper backup mechanism of the
transaction.


Also note that this change regress the warning message for the legacy fallback
introduced in 2008 when issue902 got fixed in dd5a501cb97f (Mercurial 1.0).

I feel like this is fine as issue 902 remains fixed, and this would only affect
people deploying a mix of 15 year old Mercurial and modern mercurial, and using
branch and rollback extensively.

#require test-repo

Set vars:

  $ . "$TESTDIR/helpers-testrepo.sh"
  $ CONTRIBDIR="$TESTDIR/../contrib"

Prepare repo:

  $ hg init

  $ echo this is file a > a
  $ hg add a
  $ hg commit -m first

  $ echo adding to file a >> a
  $ hg commit -m second

  $ echo adding more to file a >> a
  $ hg commit -m third

  $ hg up -r 0
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo merge-this >> a
  $ hg commit -m merge-able
  created new head

  $ hg up -r 2
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

perfstatus

  $ cat >> $HGRCPATH << EOF
  > [extensions]
  > perf=$CONTRIBDIR/perf.py
  > [perf]
  > presleep=0
  > stub=on
  > parentscount=1
  > EOF
  $ hg help -e perf
  perf extension - helper extension to measure performance
  
  Configurations
  ==============
  
  "perf"
  ------
  
  "all-timing"
      When set, additional statistics will be reported for each benchmark: best,
      worst, median average. If not set only the best timing is reported
      (default: off).
  
  "presleep"
    number of second to wait before any group of runs (default: 1)
  
  "pre-run"
    number of run to perform before starting measurement.
  
  "profile-benchmark"
    Enable profiling for the benchmarked section. (The first iteration is
    benchmarked)
  
  "run-limits"
    Control the number of runs each benchmark will perform. The option value
    should be a list of '<time>-<numberofrun>' pairs. After each run the
    conditions are considered in order with the following logic:
  
        If benchmark has been running for <time> seconds, and we have performed
        <numberofrun> iterations, stop the benchmark,
  
    The default value is: '3.0-100, 10.0-3'
  
  "stub"
      When set, benchmarks will only be run once, useful for testing (default:
      off)
  
  list of commands:
  
   perf::addremove
                 (no help text available)
   perf::ancestors
                 (no help text available)
   perf::ancestorset
                 (no help text available)
   perf::annotate
                 (no help text available)
   perf::bdiff   benchmark a bdiff between revisions
   perf::bookmarks
                 benchmark parsing bookmarks from disk to memory
   perf::branchmap
                 benchmark the update of a branchmap
   perf::branchmapload
                 benchmark reading the branchmap
   perf::branchmapupdate
                 benchmark branchmap update from for <base> revs to <target>
                 revs
   perf::bundle  benchmark the creation of a bundle from a repository
   perf::bundleread
                 Benchmark reading of bundle files.
   perf::cca     (no help text available)
   perf::changegroupchangelog
                 Benchmark producing a changelog group for a changegroup.
   perf::changeset
                 (no help text available)
   perf::ctxfiles
                 (no help text available)
   perf::delta-find
                 benchmark the process of finding a valid delta for a revlog
                 revision
   perf::diffwd  Profile diff of working directory changes
   perf::dirfoldmap
                 benchmap a 'dirstate._map.dirfoldmap.get()' request
   perf::dirs    (no help text available)
   perf::dirstate
                 benchmap the time of various distate operations
   perf::dirstatedirs
                 benchmap a 'dirstate.hasdir' call from an empty 'dirs' cache
   perf::dirstatefoldmap
                 benchmap a 'dirstate._map.filefoldmap.get()' request
   perf::dirstatewrite
                 benchmap the time it take to write a dirstate on disk
   perf::discovery
                 benchmark discovery between local repo and the peer at given
                 path
   perf::fncacheencode
                 (no help text available)
   perf::fncacheload
                 (no help text available)
   perf::fncachewrite
                 (no help text available)
   perf::heads   benchmark the computation of a changelog heads
   perf::helper-mergecopies
                 find statistics about potential parameters for
                 'perfmergecopies'
   perf::helper-pathcopies
                 find statistic about potential parameters for the
                 'perftracecopies'
   perf::ignore  benchmark operation related to computing ignore
   perf::index   benchmark index creation time followed by a lookup
   perf::linelogedits
                 (no help text available)
   perf::loadmarkers
                 benchmark the time to parse the on-disk markers for a repo
   perf::log     (no help text available)
   perf::lookup  (no help text available)
   perf::lrucachedict
                 (no help text available)
   perf::manifest
                 benchmark the time to read a manifest from disk and return a
                 usable
   perf::mergecalculate
                 (no help text available)
   perf::mergecopies
                 measure runtime of 'copies.mergecopies'
   perf::moonwalk
                 benchmark walking the changelog backwards
   perf::nodelookup
                 (no help text available)
   perf::nodemap
                 benchmark the time necessary to look up revision from a cold
                 nodemap
   perf::parents
                 benchmark the time necessary to fetch one changeset's parents.
   perf::pathcopies
                 benchmark the copy tracing logic
   perf::phases  benchmark phasesets computation
   perf::phasesremote
                 benchmark time needed to analyse phases of the remote server
   perf::progress
                 printing of progress bars
   perf::rawfiles
                 (no help text available)
   perf::revlogchunks
                 Benchmark operations on revlog chunks.
   perf::revlogindex
                 Benchmark operations against a revlog index.
   perf::revlogrevision
                 Benchmark obtaining a revlog revision.
   perf::revlogrevisions
                 Benchmark reading a series of revisions from a revlog.
   perf::revlogwrite
                 Benchmark writing a series of revisions to a revlog.
   perf::revrange
                 (no help text available)
   perf::revset  benchmark the execution time of a revset
   perf::startup
                 (no help text available)
   perf::status  benchmark the performance of a single status call
   perf::tags    (no help text available)
   perf::templating
                 test the rendering time of a given template
   perf::unbundle
                 benchmark application of a bundle in a repository.
   perf::unidiff
                 benchmark a unified diff between revisions
   perf::volatilesets
                 benchmark the computation of various volatile set
   perf::walk    (no help text available)
   perf::write   microbenchmark ui.write (and others)
  
  (use 'hg help -v perf' to show built-in aliases and global options)

  $ hg help perfaddremove
  hg perf::addremove
  
  aliases: perfaddremove
  
  (no help text available)
  
  options:
  
   -T --template TEMPLATE display with template
  
  (some details hidden, use --verbose to show complete help)

  $ hg perfaddremove
  $ hg perfancestors
  $ hg perfancestorset 2
  $ hg perfannotate a
  $ hg perfbdiff -c 1
  $ hg perfbdiff --alldata 1
  $ hg perfunidiff -c 1
  $ hg perfunidiff --alldata 1
  $ hg perfbookmarks
  $ hg perfbranchmap
  $ hg perfbranchmapload
  $ hg perfbranchmapupdate --base "not tip" --target "tip"
  benchmark of branchmap with 3 revisions with 1 new ones
  $ hg perfcca
  $ hg perfchangegroupchangelog
  $ hg perfchangegroupchangelog --cgversion 01
  $ hg perfchangeset 2
  $ hg perfctxfiles 2
  $ hg perfdiffwd
  $ hg perfdirfoldmap
  $ hg perfdirs
  $ hg perfdirstate
  $ hg perfdirstate --contains
  $ hg perfdirstate --iteration
  $ hg perfdirstatedirs
  $ hg perfdirstatefoldmap
  $ hg perfdirstatewrite
#if repofncache
  $ hg perffncacheencode
  $ hg perffncacheload
  $ hg debugrebuildfncache
  fncache already up to date
  $ hg perffncachewrite
  $ hg debugrebuildfncache
  fncache already up to date
#endif
  $ hg perfheads
  $ hg perfignore
  $ hg perfindex
  $ hg perflinelogedits -n 1
  $ hg perfloadmarkers
  $ hg perflog
  $ hg perflookup 2
  $ hg perflrucache
  $ hg perfmanifest 2
  $ hg perfmanifest -m 44fe2c8352bb3a478ffd7d8350bbc721920134d1
  $ hg perfmanifest -m 44fe2c8352bb
  abort: manifest revision must be integer or full node
  [255]
  $ hg perfmergecalculate -r 3
  $ hg perfmoonwalk
  $ hg perfnodelookup 2
  $ hg perfpathcopies 1 2
  $ hg perfprogress --total 1000
  $ hg perfrawfiles 2
  $ hg perfrevlogindex -c
#if reporevlogstore
  $ hg perfrevlogrevisions .hg/store/data/a.i
#endif
  $ hg perfrevlogrevision -m 0
  $ hg perfrevlogchunks -c
  $ hg perfrevrange
  $ hg perfrevset 'all()'
  $ hg perfstartup
  $ hg perfstatus
  $ hg perfstatus --dirstate
  $ hg perftags
  $ hg perftemplating
  $ hg perfvolatilesets
  $ hg perfwalk
  $ hg perfparents
  $ hg perfdiscovery -q .

Test run control
----------------

Simple single entry

  $ hg perfparents --config perf.stub=no --config perf.run-limits='0.000000001-15'
  ! wall * comb * user * sys * (best of 15) (glob)

Multiple entries

  $ hg perfparents --config perf.stub=no --config perf.run-limits='500000-1, 0.000000001-5'
  ! wall * comb * user * sys * (best of 5) (glob)

error case are ignored

  $ hg perfparents --config perf.stub=no --config perf.run-limits='500, 0.000000001-5'
  malformatted run limit entry, missing "-": 500
  ! wall * comb * user * sys * (best of 5) (glob)
  $ hg perfparents --config perf.stub=no --config perf.run-limits='aaa-12, 0.000000001-5'
  malformatted run limit entry, could not convert string to float: 'aaa': aaa-12
  ! wall * comb * user * sys * (best of 5) (glob)
  $ hg perfparents --config perf.stub=no --config perf.run-limits='12-aaaaaa, 0.000000001-5'
  malformatted run limit entry, invalid literal for int() with base 10: 'aaaaaa': 12-aaaaaa
  ! wall * comb * user * sys * (best of 5) (glob)

test actual output
------------------

normal output:

  $ hg perfheads --config perf.stub=no
  ! wall * comb * user * sys * (best of *) (glob)

detailed output:

  $ hg perfheads --config perf.all-timing=yes --config perf.stub=no
  ! wall * comb * user * sys * (best of *) (glob)
  ! wall * comb * user * sys * (max of *) (glob)
  ! wall * comb * user * sys * (avg of *) (glob)
  ! wall * comb * user * sys * (median of *) (glob)

test json output
----------------

normal output:

  $ hg perfheads --template json --config perf.stub=no
  [
   {
    "comb": *, (glob)
    "count": *, (glob)
    "sys": *, (glob)
    "user": *, (glob)
    "wall": * (glob)
   }
  ]

detailed output:

  $ hg perfheads --template json --config perf.all-timing=yes --config perf.stub=no
  [
   {
    "avg.comb": *, (glob)
    "avg.count": *, (glob)
    "avg.sys": *, (glob)
    "avg.user": *, (glob)
    "avg.wall": *, (glob)
    "comb": *, (glob)
    "count": *, (glob)
    "max.comb": *, (glob)
    "max.count": *, (glob)
    "max.sys": *, (glob)
    "max.user": *, (glob)
    "max.wall": *, (glob)
    "median.comb": *, (glob)
    "median.count": *, (glob)
    "median.sys": *, (glob)
    "median.user": *, (glob)
    "median.wall": *, (glob)
    "sys": *, (glob)
    "user": *, (glob)
    "wall": * (glob)
   }
  ]

Test pre-run feature
--------------------

(perf discovery has some spurious output)

  $ hg perfdiscovery . --config perf.stub=no --config perf.run-limits='0.000000001-1' --config perf.pre-run=0
  ! wall * comb * user * sys * (best of 1) (glob)
  searching for changes
  $ hg perfdiscovery . --config perf.stub=no --config perf.run-limits='0.000000001-1' --config perf.pre-run=1
  ! wall * comb * user * sys * (best of 1) (glob)
  searching for changes
  searching for changes
  $ hg perfdiscovery . --config perf.stub=no --config perf.run-limits='0.000000001-1' --config perf.pre-run=3
  ! wall * comb * user * sys * (best of 1) (glob)
  searching for changes
  searching for changes
  searching for changes
  searching for changes
  $ hg perf::bundle 'last(all(), 5)'
  $ hg bundle --exact --rev 'last(all(), 5)' last-5.hg
  4 changesets found
  $ hg perf::unbundle last-5.hg


test  profile-benchmark option
------------------------------

Function to check that statprof ran
  $ statprofran () {
  >   egrep 'Sample count:|No samples recorded' > /dev/null
  > }
  $ hg perfdiscovery . --config perf.stub=no --config perf.run-limits='0.000000001-1' --config perf.profile-benchmark=yes 2>&1 | statprofran

Check perf.py for historical portability
----------------------------------------

  $ cd "$TESTDIR/.."

  $ (testrepohg files -r 1.2 glob:mercurial/*.c glob:mercurial/*.py;
  >  testrepohg files -r tip glob:mercurial/*.c glob:mercurial/*.py) |
  > "$TESTDIR"/check-perf-code.py contrib/perf.py
  contrib/perf.py:\d+: (re)
   >     from mercurial import (
   import newer module separately in try clause for early Mercurial
  contrib/perf.py:\d+: (re)
   >     from mercurial import (
   import newer module separately in try clause for early Mercurial
  contrib/perf.py:\d+: (re)
   >     origindexpath = orig.opener.join(indexfile)
   use getvfs()/getsvfs() for early Mercurial
  contrib/perf.py:\d+: (re)
   >     origdatapath = orig.opener.join(datafile)
   use getvfs()/getsvfs() for early Mercurial
  contrib/perf.py:\d+: (re)
   >         vfs = vfsmod.vfs(tmpdir)
   use getvfs()/getsvfs() for early Mercurial
  contrib/perf.py:\d+: (re)
   >         vfs.options = getattr(orig.opener, 'options', None)
   use getvfs()/getsvfs() for early Mercurial
  [1]