Mercurial > hg
view tests/test-flagprocessor.t @ 44363:f7459da77f23
nodemap: introduce an option to use mmap to read the nodemap mapping
The performance and memory benefit is much greater if we don't have to copy all
the data in memory for each information. So we introduce an option (on by
default) to read the data using mmap.
This changeset is the last one definition the API for index support nodemap
data. (they have to be able to use the mmaping).
Below are some benchmark comparing the best we currently have in 5.3 with the
final step of this series (using the persistent nodemap implementation in
Rust). The benchmark run `hg perfindex` with various revset and the following
variants:
Before:
* do not use the persistent nodemap
* use the CPython implementation of the index for nodemap
* use mmapping of the changelog index
After:
* use the MixedIndex Rust code, with the NodeTree object for nodemap access
(still in review)
* use the persistent nodemap data from disk
* access the persistent nodemap data through mmap
* use mmapping of the changelog index
The persistent nodemap greatly speed up most operation on very large
repositories. Some of the previously very fast lookup end up a bit slower because
the persistent nodemap has to be setup. However the absolute slowdown is very
small and won't matters in the big picture.
Here are some numbers (in seconds) for the reference copy of mozilla-try:
Revset Before After abs-change speedup
-10000: 0.004622 0.005532 0.000910 × 0.83
-10: 0.000050 0.000132 0.000082 × 0.37
tip 0.000052 0.000085 0.000033 × 0.61
0 + (-10000:) 0.028222 0.005337 -0.022885 × 5.29
0 0.023521 0.000084 -0.023437 × 280.01
(-10000:) + 0 0.235539 0.005308 -0.230231 × 44.37
(-10:) + :9 0.232883 0.000180 -0.232703 ×1293.79
(-10000:) + (:99) 0.238735 0.005358 -0.233377 × 44.55
:99 + (-10000:) 0.317942 0.005593 -0.312349 × 56.84
:9 + (-10:) 0.313372 0.000179 -0.313193 ×1750.68
:9 0.316450 0.000143 -0.316307 ×2212.93
On smaller repositories, the cost of nodemap related operation is not as big, so
the win is much more modest. Yet it helps shaving a handful of millisecond here
and there.
Here are some numbers (in seconds) for the reference copy of mercurial:
Revset Before After abs-change speedup
-10: 0.000065 0.000097 0.000032 × 0.67
tip 0.000063 0.000078 0.000015 × 0.80
0 0.000561 0.000079 -0.000482 × 7.10
-10000: 0.004609 0.003648 -0.000961 × 1.26
0 + (-10000:) 0.005023 0.003715 -0.001307 × 1.35
(-10:) + :9 0.002187 0.000108 -0.002079 ×20.25
(-10000:) + 0 0.006252 0.003716 -0.002536 × 1.68
(-10000:) + (:99) 0.006367 0.003707 -0.002660 × 1.71
:9 + (-10:) 0.003846 0.000110 -0.003736 ×34.96
:9 0.003854 0.000099 -0.003755 ×38.92
:99 + (-10000:) 0.007644 0.003778 -0.003866 × 2.02
Differential Revision: https://phab.mercurial-scm.org/D7894
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Tue, 11 Feb 2020 11:18:52 +0100 |
parents | 35cd52c4a5cc |
children | 95c4cca641f6 |
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# Create server $ hg init server $ cd server $ cat >> .hg/hgrc << EOF > [extensions] > extension=$TESTDIR/flagprocessorext.py > EOF $ cd ../ # Clone server and enable extensions $ hg clone -q server client $ cd client $ cat >> .hg/hgrc << EOF > [extensions] > extension=$TESTDIR/flagprocessorext.py > EOF # Commit file that will trigger the noop extension $ echo '[NOOP]' > noop $ hg commit -Aqm "noop" # Commit file that will trigger the base64 extension $ echo '[BASE64]' > base64 $ hg commit -Aqm 'base64' # Commit file that will trigger the gzip extension $ echo '[GZIP]' > gzip $ hg commit -Aqm 'gzip' # Commit file that will trigger noop and base64 $ echo '[NOOP][BASE64]' > noop-base64 $ hg commit -Aqm 'noop+base64' # Commit file that will trigger noop and gzip $ echo '[NOOP][GZIP]' > noop-gzip $ hg commit -Aqm 'noop+gzip' # Commit file that will trigger base64 and gzip $ echo '[BASE64][GZIP]' > base64-gzip $ hg commit -Aqm 'base64+gzip' # Commit file that will trigger base64, gzip and noop $ echo '[BASE64][GZIP][NOOP]' > base64-gzip-noop $ hg commit -Aqm 'base64+gzip+noop' # TEST: ensure the revision data is consistent $ hg cat noop [NOOP] $ hg debugdata noop 0 [NOOP] $ hg cat -r . base64 [BASE64] $ hg debugdata base64 0 W0JBU0U2NF0K (no-eol) $ hg cat -r . gzip [GZIP] $ hg debugdata gzip 0 x\x9c\x8bv\x8f\xf2\x0c\x88\xe5\x02\x00\x08\xc8\x01\xfd (no-eol) (esc) $ hg cat -r . noop-base64 [NOOP][BASE64] $ hg debugdata noop-base64 0 W05PT1BdW0JBU0U2NF0K (no-eol) $ hg cat -r . noop-gzip [NOOP][GZIP] $ hg debugdata noop-gzip 0 x\x9c\x8b\xf6\xf3\xf7\x0f\x88\x8dv\x8f\xf2\x0c\x88\xe5\x02\x00\x1dH\x03\xf1 (no-eol) (esc) $ hg cat -r . base64-gzip [BASE64][GZIP] $ hg debugdata base64-gzip 0 eJyLdnIMdjUziY12j/IMiOUCACLBBDo= (no-eol) $ hg cat -r . base64-gzip-noop [BASE64][GZIP][NOOP] $ hg debugdata base64-gzip-noop 0 eJyLdnIMdjUziY12j/IMiI328/cPiOUCAESjBi4= (no-eol) # Push to the server $ hg push pushing to $TESTTMP/server searching for changes adding changesets adding manifests adding file changes added 7 changesets with 7 changes to 7 files Ensure the data got to the server OK $ cd ../server $ hg cat -r 6e48f4215d24 noop [NOOP] $ hg debugdata noop 0 [NOOP] $ hg cat -r 6e48f4215d24 base64 [BASE64] $ hg debugdata base64 0 W0JBU0U2NF0K (no-eol) $ hg cat -r 6e48f4215d24 gzip [GZIP] $ hg debugdata gzip 0 x\x9c\x8bv\x8f\xf2\x0c\x88\xe5\x02\x00\x08\xc8\x01\xfd (no-eol) (esc) $ hg cat -r 6e48f4215d24 noop-base64 [NOOP][BASE64] $ hg debugdata noop-base64 0 W05PT1BdW0JBU0U2NF0K (no-eol) $ hg cat -r 6e48f4215d24 noop-gzip [NOOP][GZIP] $ hg debugdata noop-gzip 0 x\x9c\x8b\xf6\xf3\xf7\x0f\x88\x8dv\x8f\xf2\x0c\x88\xe5\x02\x00\x1dH\x03\xf1 (no-eol) (esc) $ hg cat -r 6e48f4215d24 base64-gzip [BASE64][GZIP] $ hg debugdata base64-gzip 0 eJyLdnIMdjUziY12j/IMiOUCACLBBDo= (no-eol) $ hg cat -r 6e48f4215d24 base64-gzip-noop [BASE64][GZIP][NOOP] $ hg debugdata base64-gzip-noop 0 eJyLdnIMdjUziY12j/IMiI328/cPiOUCAESjBi4= (no-eol) # Initialize new client (not cloning) and setup extension $ cd .. $ hg init client2 $ cd client2 $ cat >> .hg/hgrc << EOF > [paths] > default = $TESTTMP/server > [extensions] > extension=$TESTDIR/flagprocessorext.py > EOF # Pull from server and update to latest revision $ hg pull default pulling from $TESTTMP/server requesting all changes adding changesets adding manifests adding file changes added 7 changesets with 7 changes to 7 files new changesets 07b1b9442c5b:6e48f4215d24 (run 'hg update' to get a working copy) $ hg update 7 files updated, 0 files merged, 0 files removed, 0 files unresolved # TEST: ensure the revision data is consistent $ hg cat noop [NOOP] $ hg debugdata noop 0 [NOOP] $ hg cat -r . base64 [BASE64] $ hg debugdata base64 0 W0JBU0U2NF0K (no-eol) $ hg cat -r . gzip [GZIP] $ hg debugdata gzip 0 x\x9c\x8bv\x8f\xf2\x0c\x88\xe5\x02\x00\x08\xc8\x01\xfd (no-eol) (esc) $ hg cat -r . noop-base64 [NOOP][BASE64] $ hg debugdata noop-base64 0 W05PT1BdW0JBU0U2NF0K (no-eol) $ hg cat -r . noop-gzip [NOOP][GZIP] $ hg debugdata noop-gzip 0 x\x9c\x8b\xf6\xf3\xf7\x0f\x88\x8dv\x8f\xf2\x0c\x88\xe5\x02\x00\x1dH\x03\xf1 (no-eol) (esc) $ hg cat -r . base64-gzip [BASE64][GZIP] $ hg debugdata base64-gzip 0 eJyLdnIMdjUziY12j/IMiOUCACLBBDo= (no-eol) $ hg cat -r . base64-gzip-noop [BASE64][GZIP][NOOP] $ hg debugdata base64-gzip-noop 0 eJyLdnIMdjUziY12j/IMiI328/cPiOUCAESjBi4= (no-eol) # TEST: ensure a missing processor is handled $ echo '[FAIL][BASE64][GZIP][NOOP]' > fail-base64-gzip-noop $ hg commit -Aqm 'fail+base64+gzip+noop' abort: missing processor for flag '0x1'! [255] $ rm fail-base64-gzip-noop # TEST: ensure we cannot register several flag processors on the same flag $ cat >> .hg/hgrc << EOF > [extensions] > extension=$TESTDIR/flagprocessorext.py > duplicate=$TESTDIR/flagprocessorext.py > EOF $ hg debugrebuilddirstate Traceback (most recent call last): File "*/mercurial/extensions.py", line *, in _runextsetup (glob) extsetup(ui) File "*/tests/flagprocessorext.py", line *, in extsetup (glob) flagutil.addflagprocessor( (py38 !) REVIDX_NOOP, (noopdonothingread, noopdonothing, validatehash,) (no-py38 !) File "*/mercurial/revlogutils/flagutil.py", line *, in addflagprocessor (glob) insertflagprocessor(flag, processor, flagprocessors) File "*/mercurial/revlogutils/flagutil.py", line *, in insertflagprocessor (glob) raise error.Abort(msg) mercurial.error.Abort: cannot register multiple processors on flag '0x8'. (py3 !) Abort: cannot register multiple processors on flag '0x8'. (no-py3 !) *** failed to set up extension duplicate: cannot register multiple processors on flag '0x8'. $ hg st 2>&1 | egrep 'cannot register multiple processors|flagprocessorext' File "*/tests/flagprocessorext.py", line *, in extsetup (glob) mercurial.error.Abort: cannot register multiple processors on flag '0x8'. (py3 !) Abort: cannot register multiple processors on flag '0x8'. (no-py3 !) *** failed to set up extension duplicate: cannot register multiple processors on flag '0x8'. File "*/tests/flagprocessorext.py", line *, in b64decode (glob) $ cd .. # TEST: bundle repo $ hg init bundletest $ cd bundletest $ cat >> .hg/hgrc << EOF > [extensions] > flagprocessor=$TESTDIR/flagprocessorext.py > EOF $ for i in 0 single two three 4; do > echo '[BASE64]a-bit-longer-'$i > base64 > hg commit -m base64-$i -A base64 > done $ hg update 2 -q $ echo '[BASE64]a-bit-longer-branching' > base64 $ hg commit -q -m branching #if repobundlerepo $ hg bundle --base 1 bundle.hg 4 changesets found $ hg --config extensions.strip= strip -r 2 --no-backup --force -q $ hg -R bundle.hg log --stat -T '{rev} {desc}\n' base64 5 branching base64 | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) 4 base64-4 base64 | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) 3 base64-three base64 | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) 2 base64-two base64 | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) 1 base64-single base64 | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) 0 base64-0 base64 | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) $ hg bundle -R bundle.hg --base 1 bundle-again.hg -q $ hg -R bundle-again.hg log --stat -T '{rev} {desc}\n' base64 5 branching base64 | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) 4 base64-4 base64 | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) 3 base64-three base64 | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) 2 base64-two base64 | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) 1 base64-single base64 | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) 0 base64-0 base64 | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) $ rm bundle.hg bundle-again.hg #endif # TEST: hg status $ hg status $ hg diff