Mercurial > hg
view tests/test-infinitepush.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 | d7304434390f |
children | be496e3489b9 |
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#require no-reposimplestore Testing infinipush extension and the confi options provided by it Setup $ . "$TESTDIR/library-infinitepush.sh" $ cp $HGRCPATH $TESTTMP/defaulthgrc $ setupcommon $ hg init repo $ cd repo $ setupserver $ echo initialcommit > initialcommit $ hg ci -Aqm "initialcommit" $ hg phase --public . $ cd .. $ hg clone ssh://user@dummy/repo client -q Create two heads. Push first head alone, then two heads together. Make sure that multihead push works. $ cd client $ echo multihead1 > multihead1 $ hg add multihead1 $ hg ci -m "multihead1" $ hg up null 0 files updated, 0 files merged, 2 files removed, 0 files unresolved $ echo multihead2 > multihead2 $ hg ci -Am "multihead2" adding multihead2 created new head $ hg push -r . --bundle-store pushing to ssh://user@dummy/repo searching for changes remote: pushing 1 commit: remote: ee4802bf6864 multihead2 $ hg push -r '1:2' --bundle-store pushing to ssh://user@dummy/repo searching for changes remote: pushing 2 commits: remote: bc22f9a30a82 multihead1 remote: ee4802bf6864 multihead2 $ scratchnodes bc22f9a30a821118244deacbd732e394ed0b686c ab1bc557aa090a9e4145512c734b6e8a828393a5 ee4802bf6864326a6b3dcfff5a03abc2a0a69b8f ab1bc557aa090a9e4145512c734b6e8a828393a5 Create two new scratch bookmarks $ hg up 0 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo scratchfirstpart > scratchfirstpart $ hg ci -Am "scratchfirstpart" adding scratchfirstpart created new head $ hg push -r . -B scratch/firstpart pushing to ssh://user@dummy/repo searching for changes remote: pushing 1 commit: remote: 176993b87e39 scratchfirstpart $ hg up 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo scratchsecondpart > scratchsecondpart $ hg ci -Am "scratchsecondpart" adding scratchsecondpart created new head $ hg push -r . -B scratch/secondpart pushing to ssh://user@dummy/repo searching for changes remote: pushing 1 commit: remote: 8db3891c220e scratchsecondpart Pull two bookmarks from the second client $ cd .. $ hg clone ssh://user@dummy/repo client2 -q $ cd client2 $ hg pull -B scratch/firstpart -B scratch/secondpart pulling from ssh://user@dummy/repo searching for changes adding changesets adding manifests adding file changes adding changesets adding manifests adding file changes added 2 changesets with 2 changes to 2 files (+1 heads) new changesets * (glob) (run 'hg heads' to see heads, 'hg merge' to merge) $ hg log -r scratch/secondpart -T '{node}' 8db3891c220e216f6da214e8254bd4371f55efca (no-eol) $ hg log -r scratch/firstpart -T '{node}' 176993b87e39bd88d66a2cccadabe33f0b346339 (no-eol) Make two commits to the scratch branch $ echo testpullbycommithash1 > testpullbycommithash1 $ hg ci -Am "testpullbycommithash1" adding testpullbycommithash1 created new head $ hg log -r '.' -T '{node}\n' > ../testpullbycommithash1 $ echo testpullbycommithash2 > testpullbycommithash2 $ hg ci -Aqm "testpullbycommithash2" $ hg push -r . -B scratch/mybranch -q Create third client and pull by commit hash. Make sure testpullbycommithash2 has not fetched $ cd .. $ hg clone ssh://user@dummy/repo client3 -q $ cd client3 $ hg pull -r `cat ../testpullbycommithash1` pulling from ssh://user@dummy/repo searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files new changesets 33910bfe6ffe (1 drafts) (run 'hg update' to get a working copy) $ hg log -G -T '{desc} {phase} {bookmarks}' o testpullbycommithash1 draft | @ initialcommit public Make public commit in the repo and pull it. Make sure phase on the client is public. $ cd ../repo $ echo publiccommit > publiccommit $ hg ci -Aqm "publiccommit" $ hg phase --public . $ cd ../client3 $ hg pull pulling from ssh://user@dummy/repo searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) new changesets a79b6597f322 (run 'hg heads' to see heads, 'hg merge' to merge) $ hg log -G -T '{desc} {phase} {bookmarks} {node|short}' o publiccommit public a79b6597f322 | | o testpullbycommithash1 draft 33910bfe6ffe |/ @ initialcommit public 67145f466344 $ hg up a79b6597f322 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo scratchontopofpublic > scratchontopofpublic $ hg ci -Aqm "scratchontopofpublic" $ hg push -r . -B scratch/scratchontopofpublic pushing to ssh://user@dummy/repo searching for changes remote: pushing 1 commit: remote: c70aee6da07d scratchontopofpublic $ cd ../client2 $ hg pull -B scratch/scratchontopofpublic pulling from ssh://user@dummy/repo searching for changes adding changesets adding manifests adding file changes adding changesets adding manifests adding file changes added 2 changesets with 2 changes to 2 files (+1 heads) new changesets a79b6597f322:c70aee6da07d (1 drafts) (run 'hg heads .' to see heads, 'hg merge' to merge) $ hg log -r scratch/scratchontopofpublic -T '{phase}' draft (no-eol)