view tests/test-fastannotate-perfhack.t @ 44528:c8891bca40fb

rust-status: add bare `hg status` support in hg-core

A lot of performance remains to be gained, most notably by doing more things
in parallel, but also by caching, not falling back to Python but switching
to another regex engine, etc..

I have measured on multiple repositories that this change, when in combination
with the next two patches, improve bare `hg status` performance, and has no
observable impact when falling back (because it does so early).

On the Netbeans repository:
C: 840ms
Rust+C: 556ms

Mozilla Central with the one pattern that causes a fallback removed:
C: 2.315s
Rust+C: 1.700 s

Differential Revision: https://phab.mercurial-scm.org/D7929

  $ cat >> $HGRCPATH << EOF
  > [extensions]
  > fastannotate=
  > [fastannotate]
  > perfhack=1
  > EOF

  $ hg init repo
  $ cd repo

a simple merge case

  $ echo 1 > a
  $ hg commit -qAm 'append 1'
  $ echo 2 >> a
  $ hg commit -m 'append 2'
  $ echo 3 >> a
  $ hg commit -m 'append 3'
  $ hg up 1 -q
  $ cat > a << EOF
  > 0
  > 1
  > 2
  > EOF
  $ hg commit -qm 'insert 0'
  $ hg merge 2 -q
  $ echo 4 >> a
  $ hg commit -m merge
  $ hg log -G -T '{rev}: {desc}'
  @    4: merge
  |\
  | o  3: insert 0
  | |
  o |  2: append 3
  |/
  o  1: append 2
  |
  o  0: append 1
  
  $ hg fastannotate a
  3: 0
  0: 1
  1: 2
  2: 3
  4: 4
  $ hg fastannotate -r 0 a
  0: 1
  $ hg fastannotate -r 1 a
  0: 1
  1: 2
  $ hg fastannotate -udnclf a
  test 3 d641cb51f61e Thu Jan 01 00:00:00 1970 +0000 a:1: 0
  test 0 4994017376d3 Thu Jan 01 00:00:00 1970 +0000 a:1: 1
  test 1 e940cb6d9a06 Thu Jan 01 00:00:00 1970 +0000 a:2: 2
  test 2 26162a884ba6 Thu Jan 01 00:00:00 1970 +0000 a:3: 3
  test 4 3ad7bcd2815f Thu Jan 01 00:00:00 1970 +0000 a:5: 4
  $ hg fastannotate --linear a
  3: 0
  0: 1
  1: 2
  4: 3
  4: 4

incrementally updating

  $ hg fastannotate -r 0 a --debug
  fastannotate: a: using fast path (resolved fctx: True)
  0: 1
  $ hg fastannotate -r 0 a --debug --rebuild
  fastannotate: a: 1 new changesets in the main branch
  0: 1
  $ hg fastannotate -r 1 a --debug
  fastannotate: a: 1 new changesets in the main branch
  0: 1
  1: 2
  $ hg fastannotate -r 3 a --debug
  fastannotate: a: 1 new changesets in the main branch
  3: 0
  0: 1
  1: 2
  $ hg fastannotate -r 4 a --debug
  fastannotate: a: 1 new changesets in the main branch
  3: 0
  0: 1
  1: 2
  2: 3
  4: 4
  $ hg fastannotate -r 1 a --debug
  fastannotate: a: using fast path (resolved fctx: True)
  0: 1
  1: 2

rebuild happens automatically if unable to update

  $ hg fastannotate -r 2 a --debug
  fastannotate: a: cache broken and deleted
  fastannotate: a: 3 new changesets in the main branch
  0: 1
  1: 2
  2: 3

config option "fastannotate.mainbranch"

  $ hg fastannotate -r 1 --rebuild --config fastannotate.mainbranch=tip a --debug
  fastannotate: a: 4 new changesets in the main branch
  0: 1
  1: 2
  $ hg fastannotate -r 4 a --debug
  fastannotate: a: using fast path (resolved fctx: True)
  3: 0
  0: 1
  1: 2
  2: 3
  4: 4

rename

  $ hg mv a b
  $ cat > b << EOF
  > 0
  > 11
  > 3
  > 44
  > EOF
  $ hg commit -m b -q
  $ hg fastannotate -ncf --long-hash b
  3 d641cb51f61e331c44654104301f8154d7865c89 a: 0
  5 d44dade239915bc82b91e4556b1257323f8e5824 b: 11
  2 26162a884ba60e8c87bf4e0d6bb8efcc6f711a4e a: 3
  5 d44dade239915bc82b91e4556b1257323f8e5824 b: 44
  $ hg fastannotate -r 26162a884ba60e8c87bf4e0d6bb8efcc6f711a4e a
  0: 1
  1: 2
  2: 3

fastannotate --deleted

  $ hg fastannotate --deleted -nf b
  3 a:  0
  5 b:  11
  0 a: -1
  1 a: -2
  2 a:  3
  5 b:  44
  4 a: -4
  $ hg fastannotate --deleted -r 3 -nf a
  3 a:  0
  0 a:  1
  1 a:  2

file and directories with ".l", ".m" suffixes

  $ cd ..
  $ hg init repo2
  $ cd repo2

  $ mkdir a.l b.m c.lock a.l.hg b.hg
  $ for i in a b c d d.l d.m a.l/a b.m/a c.lock/a a.l.hg/a b.hg/a; do
  >   echo $i > $i
  > done
  $ hg add . -q
  $ hg commit -m init
  $ hg fastannotate a.l/a b.m/a c.lock/a a.l.hg/a b.hg/a d.l d.m a b c d
  0: a
  0: a.l.hg/a
  0: a.l/a
  0: b
  0: b.hg/a
  0: b.m/a
  0: c
  0: c.lock/a
  0: d
  0: d.l
  0: d.m

empty file

  $ touch empty
  $ hg commit -A empty -m empty
  $ hg fastannotate empty