Mercurial > hg
view tests/test-hgweb-raw.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 | bd1ec1e36bf0 |
| children |
line wrap: on
line source
#require serve Test raw style of hgweb $ hg init test $ cd test $ mkdir sub $ cat >'sub/some text%.txt' <<ENDSOME > This is just some random text > that will go inside the file and take a few lines. > It is very boring to read, but computers don't > care about things like that. > ENDSOME $ hg add 'sub/some text%.txt' $ hg commit -d "1 0" -m "Just some text" $ hg serve -p $HGPORT -A access.log -E error.log -d --pid-file=hg.pid $ cat hg.pid >> $DAEMON_PIDS $ (get-with-headers.py localhost:$HGPORT 'raw-file/bf0ff59095c9/sub/some%20text%25.txt' content-type content-length content-disposition) >getoutput.txt $ killdaemons.py hg.pid $ cat getoutput.txt 200 Script output follows content-type: application/binary content-length: 157 content-disposition: inline; filename="some text%.txt" This is just some random text that will go inside the file and take a few lines. It is very boring to read, but computers don't care about things like that. $ cat access.log error.log $LOCALIP - - [$LOGDATE$] "GET /raw-file/bf0ff59095c9/sub/some%20text%25.txt HTTP/1.1" 200 - (glob) $ rm access.log error.log $ hg serve -p $HGPORT -A access.log -E error.log -d --pid-file=hg.pid \ > --config web.guessmime=True $ cat hg.pid >> $DAEMON_PIDS $ (get-with-headers.py localhost:$HGPORT 'raw-file/bf0ff59095c9/sub/some%20text%25.txt' content-type content-length content-disposition) >getoutput.txt $ killdaemons.py hg.pid $ cat getoutput.txt 200 Script output follows content-type: text/plain; charset="ascii" content-length: 157 content-disposition: inline; filename="some text%.txt" This is just some random text that will go inside the file and take a few lines. It is very boring to read, but computers don't care about things like that. $ cat access.log error.log $LOCALIP - - [$LOGDATE$] "GET /raw-file/bf0ff59095c9/sub/some%20text%25.txt HTTP/1.1" 200 - (glob) >>> with open('sub/binary.bin', 'wb') as fp: ... fp.write(b'Binary\0file') and None $ hg ci -Aqm "add binary file" sub/ $ hg serve -p $HGPORT -A access.log -E error.log -d --pid-file=hg.pid \ > --config web.guessmime=True $ cat hg.pid >> $DAEMON_PIDS $ (get-with-headers.py localhost:$HGPORT 'annotate/tip/sub/binary.bin' content-type content-length content-disposition) >getoutput.txt $ cat getoutput.txt 200 Script output follows content-type: text/html; charset=ascii <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US"> <head> <link rel="icon" href="/static/hgicon.png" type="image/png" /> <meta name="robots" content="index, nofollow" /> <link rel="stylesheet" href="/static/style-paper.css" type="text/css" /> <script type="text/javascript" src="/static/mercurial.js"></script> <title>$TESTTMP/test: sub/binary.bin annotate</title> (glob) </head> <body> <div class="container"> <div class="menu"> <div class="logo"> <a href="https://mercurial-scm.org/"> <img src="/static/hglogo.png" alt="mercurial" /></a> </div> <ul> <li><a href="/shortlog/tip">log</a></li> <li><a href="/graph/tip">graph</a></li> <li><a href="/tags">tags</a></li> <li><a href="/bookmarks">bookmarks</a></li> <li><a href="/branches">branches</a></li> </ul> <ul> <li><a href="/rev/tip">changeset</a></li> <li><a href="/file/tip/sub/">browse</a></li> </ul> <ul> <li><a href="/file/tip/sub/binary.bin">file</a></li> <li><a href="/file/tip/sub/binary.bin">latest</a></li> <li><a href="/diff/tip/sub/binary.bin">diff</a></li> <li><a href="/comparison/tip/sub/binary.bin">comparison</a></li> <li class="active">annotate</li> <li><a href="/log/tip/sub/binary.bin">file log</a></li> <li><a href="/raw-file/tip/sub/binary.bin">raw</a></li> </ul> <ul> <li><a href="/help">help</a></li> </ul> </div> <div class="main"> <h2 class="breadcrumb"><a href="/">Mercurial</a> </h2> <h3> annotate sub/binary.bin @ 1:<a href="/rev/7dc31308464a">7dc31308464a</a> <span class="phase">draft</span> <span class="branchhead">default</span> <span class="tag">tip</span> </h3> <form class="search" action="/log"> <p><input name="rev" id="search1" type="text" size="30" value="" /></p> <div id="hint">Find changesets by keywords (author, files, the commit message), revision number or hash, or <a href="/help/revsets">revset expression</a>.</div> </form> <div class="description">add binary file</div> <table id="changesetEntry"> <tr> <th class="author">author</th> <td class="author">test</td> </tr> <tr> <th class="date">date</th> <td class="date age">Thu, 01 Jan 1970 00:00:00 +0000</td> </tr> <tr> <th class="author">parents</th> <td class="author"></td> </tr> <tr> <th class="author">children</th> <td class="author"></td> </tr> </table> <form id="diffopts-form" data-ignorews="0" data-ignorewsamount="0" data-ignorewseol="0" data-ignoreblanklines="0"> <span>Ignore whitespace changes - </span> <span>Everywhere:</span> <input id="ignorews-checkbox" type="checkbox" /> <span>Within whitespace:</span> <input id="ignorewsamount-checkbox" type="checkbox" /> <span>At end of lines:</span> <input id="ignorewseol-checkbox" type="checkbox" /> </form> <script type="text/javascript"> renderDiffOptsForm(); </script> <div class="overflow"> <table class="bigtable"> <thead> <tr> <th class="annotate">rev</th> <th class="line"> line source</th> </tr> </thead> <tbody class="stripes2 sourcelines" data-logurl="/log/tip/sub/binary.bin" data-selectabletag="TR" data-ishead="1"> <tr id="l1" class="thisrev"> <td class="annotate parity0"> <a href="/annotate/7dc31308464a/sub/binary.bin#l1"> 1 </a> <div class="annotate-info"> <div> <a href="/annotate/7dc31308464a/sub/binary.bin#l1"> 7dc31308464a</a> add binary file </div> <div><em>test</em></div> <div>parents: </div> <a href="/diff/7dc31308464a/sub/binary.bin">diff</a> <a href="/rev/7dc31308464a">changeset</a> </div> </td> <td class="source followlines-btn-parent"><a href="#l1"> 1</a> (binary:application/octet-stream)</td> </tr> </tbody> </table> </div> </div> </div> <script type="text/javascript" src="/static/followlines.js"></script> </body> </html> $ (get-with-headers.py localhost:$HGPORT 'comparison/tip/sub/binary.bin' content-type content-length content-disposition) >getoutput.txt $ (get-with-headers.py localhost:$HGPORT 'file/tip/sub/binary.bin' content-type content-length content-disposition) >getoutput.txt $ (get-with-headers.py localhost:$HGPORT 'static/hgicon.png' content-type content-length content-disposition) >getoutput.txt $ killdaemons.py hg.pid $ cat access.log error.log $LOCALIP - - [$LOGDATE$] "GET /raw-file/bf0ff59095c9/sub/some%20text%25.txt HTTP/1.1" 200 - (glob) $LOCALIP - - [$LOGDATE$] "GET /annotate/tip/sub/binary.bin HTTP/1.1" 200 - (glob) $LOCALIP - - [$LOGDATE$] "GET /comparison/tip/sub/binary.bin HTTP/1.1" 200 - (glob) $LOCALIP - - [$LOGDATE$] "GET /file/tip/sub/binary.bin HTTP/1.1" 200 - (glob) $LOCALIP - - [$LOGDATE$] "GET /static/hgicon.png HTTP/1.1" 200 - (glob) $ cd ..