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view tests/test-status-rev.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 | 5abc47d4ca6b |
children | 55c6ebd11cb9 |
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Tests of 'hg status --rev <rev>' to make sure status between <rev> and '.' get combined correctly with the dirstate status. $ hg init First commit $ "$PYTHON" $TESTDIR/generate-working-copy-states.py state 2 1 $ hg addremove --similarity 0 adding content1_content1_content1-tracked adding content1_content1_content1-untracked adding content1_content1_content3-tracked adding content1_content1_content3-untracked adding content1_content1_missing-tracked adding content1_content1_missing-untracked adding content1_content2_content1-tracked adding content1_content2_content1-untracked adding content1_content2_content2-tracked adding content1_content2_content2-untracked adding content1_content2_content3-tracked adding content1_content2_content3-untracked adding content1_content2_missing-tracked adding content1_content2_missing-untracked adding content1_missing_content1-tracked adding content1_missing_content1-untracked adding content1_missing_content3-tracked adding content1_missing_content3-untracked adding content1_missing_missing-tracked adding content1_missing_missing-untracked $ hg commit -m first Second commit $ "$PYTHON" $TESTDIR/generate-working-copy-states.py state 2 2 $ hg addremove --similarity 0 removing content1_missing_content1-tracked removing content1_missing_content1-untracked removing content1_missing_content3-tracked removing content1_missing_content3-untracked removing content1_missing_missing-tracked removing content1_missing_missing-untracked adding missing_content2_content2-tracked adding missing_content2_content2-untracked adding missing_content2_content3-tracked adding missing_content2_content3-untracked adding missing_content2_missing-tracked adding missing_content2_missing-untracked $ hg commit -m second Working copy $ "$PYTHON" $TESTDIR/generate-working-copy-states.py state 2 wc $ hg addremove --similarity 0 adding content1_missing_content1-tracked adding content1_missing_content1-untracked adding content1_missing_content3-tracked adding content1_missing_content3-untracked adding content1_missing_missing-tracked adding content1_missing_missing-untracked adding missing_missing_content3-tracked adding missing_missing_content3-untracked adding missing_missing_missing-tracked adding missing_missing_missing-untracked $ hg forget *_*_*-untracked $ rm *_*_missing-* Status compared to parent of the working copy, i.e. the dirstate status $ hg status -A --rev 1 'glob:missing_content2_content3-tracked' M missing_content2_content3-tracked $ hg status -A --rev 1 'glob:missing_content2_content2-tracked' C missing_content2_content2-tracked $ hg status -A --rev 1 'glob:missing_missing_content3-tracked' A missing_missing_content3-tracked $ hg status -A --rev 1 'glob:missing_missing_content3-untracked' ? missing_missing_content3-untracked $ hg status -A --rev 1 'glob:missing_content2_*-untracked' R missing_content2_content2-untracked R missing_content2_content3-untracked R missing_content2_missing-untracked $ hg status -A --rev 1 'glob:missing_*_missing-tracked' ! missing_content2_missing-tracked ! missing_missing_missing-tracked $ hg status -A --rev 1 'glob:missing_missing_missing-untracked' missing_missing_missing-untracked: $ENOENT$ Status between first and second commit. Should ignore dirstate status. $ hg status -A --rev 0:1 'glob:content1_content2_*' M content1_content2_content1-tracked M content1_content2_content1-untracked M content1_content2_content2-tracked M content1_content2_content2-untracked M content1_content2_content3-tracked M content1_content2_content3-untracked M content1_content2_missing-tracked M content1_content2_missing-untracked $ hg status -A --rev 0:1 'glob:content1_content1_*' C content1_content1_content1-tracked C content1_content1_content1-untracked C content1_content1_content3-tracked C content1_content1_content3-untracked C content1_content1_missing-tracked C content1_content1_missing-untracked $ hg status -A --rev 0:1 'glob:missing_content2_*' A missing_content2_content2-tracked A missing_content2_content2-untracked A missing_content2_content3-tracked A missing_content2_content3-untracked A missing_content2_missing-tracked A missing_content2_missing-untracked $ hg status -A --rev 0:1 'glob:content1_missing_*' R content1_missing_content1-tracked R content1_missing_content1-untracked R content1_missing_content3-tracked R content1_missing_content3-untracked R content1_missing_missing-tracked R content1_missing_missing-untracked $ hg status -A --rev 0:1 'glob:missing_missing_*' Status compared to one revision back, checking that the dirstate status is correctly combined with the inter-revision status $ hg status -A --rev 0 'glob:content1_*_content[23]-tracked' M content1_content1_content3-tracked M content1_content2_content2-tracked M content1_content2_content3-tracked M content1_missing_content3-tracked $ hg status -A --rev 0 'glob:content1_*_content1-tracked' C content1_content1_content1-tracked C content1_content2_content1-tracked C content1_missing_content1-tracked $ hg status -A --rev 0 'glob:missing_*_content?-tracked' A missing_content2_content2-tracked A missing_content2_content3-tracked A missing_missing_content3-tracked BROKEN: missing_content2_content[23]-untracked exist, so should be listed $ hg status -A --rev 0 'glob:missing_*_content?-untracked' ? missing_missing_content3-untracked $ hg status -A --rev 0 'glob:content1_*_*-untracked' R content1_content1_content1-untracked R content1_content1_content3-untracked R content1_content1_missing-untracked R content1_content2_content1-untracked R content1_content2_content2-untracked R content1_content2_content3-untracked R content1_content2_missing-untracked R content1_missing_content1-untracked R content1_missing_content3-untracked R content1_missing_missing-untracked $ hg status -A --rev 0 'glob:*_*_missing-tracked' ! content1_content1_missing-tracked ! content1_content2_missing-tracked ! content1_missing_missing-tracked ! missing_content2_missing-tracked ! missing_missing_missing-tracked $ hg status -A --rev 0 'glob:missing_*_missing-untracked'