Mercurial > hg
view tests/test-pull.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 | fcd7a91dec23 |
children | 24b1a8eb73aa |
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#require serve #testcases sshv1 sshv2 #if sshv2 $ cat >> $HGRCPATH << EOF > [experimental] > sshpeer.advertise-v2 = true > sshserver.support-v2 = true > EOF #endif $ hg init test $ cd test $ echo foo>foo $ hg addremove adding foo $ hg commit -m 1 $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files checked 1 changesets with 1 changes to 1 files $ hg serve -p $HGPORT -d --pid-file=hg.pid $ cat hg.pid >> $DAEMON_PIDS $ cd .. $ hg clone --pull http://foo:bar@localhost:$HGPORT/ copy requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files new changesets 340e38bdcde4 updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd copy $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files checked 1 changesets with 1 changes to 1 files $ hg co 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cat foo foo $ hg manifest --debug 2ed2a3912a0b24502043eae84ee4b279c18b90dd 644 foo $ hg pull pulling from http://foo@localhost:$HGPORT/ searching for changes no changes found $ hg rollback --dry-run --verbose repository tip rolled back to revision -1 (undo pull: http://foo:***@localhost:$HGPORT/) Test pull of non-existing 20 character revision specification, making sure plain ascii identifiers not are encoded like a node: $ hg pull -r 'xxxxxxxxxxxxxxxxxxxy' pulling from http://foo@localhost:$HGPORT/ abort: unknown revision 'xxxxxxxxxxxxxxxxxxxy'! [255] $ hg pull -r 'xxxxxxxxxxxxxxxxxx y' pulling from http://foo@localhost:$HGPORT/ abort: unknown revision 'xxxxxxxxxxxxxxxxxx y'! [255] Test pull of working copy revision $ hg pull -r 'ffffffffffff' pulling from http://foo@localhost:$HGPORT/ abort: unknown revision 'ffffffffffff'! [255] Issue622: hg init && hg pull -u URL doesn't checkout default branch $ cd .. $ hg init empty $ cd empty $ hg pull -u ../test pulling from ../test requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files new changesets 340e38bdcde4 1 files updated, 0 files merged, 0 files removed, 0 files unresolved Test 'file:' uri handling: $ hg pull -q file://../test-does-not-exist abort: file:// URLs can only refer to localhost [255] $ hg pull -q file://../test abort: file:// URLs can only refer to localhost [255] MSYS changes 'file:' into 'file;' #if no-msys $ hg pull -q file:../test # no-msys #endif It's tricky to make file:// URLs working on every platform with regular shell commands. $ URL=`"$PYTHON" -c "from __future__ import print_function; import os; print('file://foobar' + ('/' + os.getcwd().replace(os.sep, '/')).replace('//', '/') + '/../test')"` $ hg pull -q "$URL" abort: file:// URLs can only refer to localhost [255] $ URL=`"$PYTHON" -c "from __future__ import print_function; import os; print('file://localhost' + ('/' + os.getcwd().replace(os.sep, '/')).replace('//', '/') + '/../test')"` $ hg pull -q "$URL" SEC: check for unsafe ssh url $ cat >> $HGRCPATH << EOF > [ui] > ssh = sh -c "read l; read l; read l" > EOF $ hg pull 'ssh://-oProxyCommand=touch${IFS}owned/path' pulling from ssh://-oProxyCommand%3Dtouch%24%7BIFS%7Downed/path abort: potentially unsafe url: 'ssh://-oProxyCommand=touch${IFS}owned/path' [255] $ hg pull 'ssh://%2DoProxyCommand=touch${IFS}owned/path' pulling from ssh://-oProxyCommand%3Dtouch%24%7BIFS%7Downed/path abort: potentially unsafe url: 'ssh://-oProxyCommand=touch${IFS}owned/path' [255] $ hg pull 'ssh://fakehost|touch${IFS}owned/path' pulling from ssh://fakehost%7Ctouch%24%7BIFS%7Downed/path abort: no suitable response from remote hg! [255] $ hg pull 'ssh://fakehost%7Ctouch%20owned/path' pulling from ssh://fakehost%7Ctouch%20owned/path abort: no suitable response from remote hg! [255] $ [ ! -f owned ] || echo 'you got owned' $ cd ..