upstream/mercurial-mirror Files · mercurial/templates/paper/shortlog.tmpl

localrepo: experimental support for non-zlib revlog compression...

localrepo: experimental support for non-zlib revlog compression The final part of integrating the compression manager APIs into revlog storage is the plumbing for repositories to advertise they are using non-zlib storage and for revlogs to instantiate a non-zlib compression engine. The main intent of the compression manager work was to zstd all of the things. Adding zstd to revlogs has proved to be more involved than other places because revlogs are... special. Very small inputs and the use of delta chains (which are themselves a form of compression) are a completely different use case from streaming compression, which bundles and the wire protocol employ. I've conducted numerous experiments with zstd in revlogs and have yet to formalize compression settings and a storage architecture that I'm confident I won't regret later. In other words, I'm not yet ready to commit to a new mechanism for using zstd - or any other compression format - in revlogs. That being said, having some support for zstd (and other compression formats) in revlogs in core is beneficial. It can allow others to conduct experiments. This patch introduces *highly experimental* support for non-zlib compression formats in revlogs. Introduced is a config option to control which compression engine to use. Also introduced is a namespace of "exp-compression-*" requirements to denote support for non-zlib compression in revlogs. I've prefixed the namespace with "exp-" (short for "experimental") because I'm not confident of the requirements "schema" and in no way want to give the illusion of supporting these requirements in the future. I fully intend to drop support for these requirements once we figure out what we're doing with zstd in revlogs. A good portion of the patch is teaching the requirements system about registered compression engines and passing the requested compression engine as an opener option so revlogs can instantiate the proper compression engine for new operations. That's a verbose way of saying "we can now use zstd in revlogs!" On an `hg pull` conversion of the mozilla-unified repo with no extra redelta settings (like aggressivemergedeltas), we can see the impact of zstd vs zlib in revlogs: $ hg perfrevlogchunks -c ! chunk ! wall 2.032052 comb 2.040000 user 1.990000 sys 0.050000 (best of 5) ! wall 1.866360 comb 1.860000 user 1.820000 sys 0.040000 (best of 6) ! chunk batch ! wall 1.877261 comb 1.870000 user 1.860000 sys 0.010000 (best of 6) ! wall 1.705410 comb 1.710000 user 1.690000 sys 0.020000 (best of 6) $ hg perfrevlogchunks -m ! chunk ! wall 2.721427 comb 2.720000 user 2.640000 sys 0.080000 (best of 4) ! wall 2.035076 comb 2.030000 user 1.950000 sys 0.080000 (best of 5) ! chunk batch ! wall 2.614561 comb 2.620000 user 2.580000 sys 0.040000 (best of 4) ! wall 1.910252 comb 1.910000 user 1.880000 sys 0.030000 (best of 6) $ hg perfrevlog -c -d 1 ! wall 4.812885 comb 4.820000 user 4.800000 sys 0.020000 (best of 3) ! wall 4.699621 comb 4.710000 user 4.700000 sys 0.010000 (best of 3) $ hg perfrevlog -m -d 1000 ! wall 34.252800 comb 34.250000 user 33.730000 sys 0.520000 (best of 3) ! wall 24.094999 comb 24.090000 user 23.320000 sys 0.770000 (best of 3) Only modest wins for the changelog. But manifest reading is significantly faster. What's going on? One reason might be data volume. zstd decompresses faster. So given more bytes, it will put more distance between it and zlib. Another reason is size. In the current design, zstd revlogs are *larger*: debugcreatestreamclonebundle (size in bytes) zlib: 1,638,852,492 zstd: 1,680,601,332 I haven't investigated this fully, but I reckon a significant cause of larger revlogs is that the zstd frame/header has more bytes than zlib's. For very small inputs or data that doesn't compress well, we'll tend to store more uncompressed chunks than with zlib (because the compressed size isn't smaller than original). This will make revlog reading faster because it is doing less decompression. Moving on to bundle performance: $ hg bundle -a -t none-v2 (total CPU time) zlib: 102.79s zstd: 97.75s So, marginal CPU decrease for reading all chunks in all revlogs (this is somewhat disappointing). $ hg bundle -a -t <engine>-v2 (total CPU time) zlib: 191.59s zstd: 115.36s This last test effectively measures the difference between zlib->zlib and zstd->zstd for revlogs to bundle. This is a rough approximation of what a server does during `hg clone`. There are some promising results for zstd. But not enough for me to feel comfortable advertising it to users. We'll get there...

Gregory Szorc - - Load All Authors

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        Dan Villiom Podlaski Christiansen
    
setup: install translation files as package data...

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      {header}

      <title>{repo|escape}: log</title>

      <link rel="alternate" type="application/atom+xml"

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         href="{url|urlescape}atom-log" title="Atom feed for {repo|escape}" />

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      <link rel="alternate" type="application/rss+xml"

        Thomas Arendsen Hein
    
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         href="{url|urlescape}rss-log" title="RSS feed for {repo|escape}" />

        Dan Villiom Podlaski Christiansen
    
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      </head>

      <body>

      <div class="container">

      <div class="menu">

      <div class="logo">

        Steven Stallion
    
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      <a href="{logourl}">

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      <img src="{staticurl|urlescape}{logoimg}" alt="mercurial" /></a>

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      </div>

      <ul>

      <li class="active">log</li>

        av6
    
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      <li><a href="{url|urlescape}graph/{symrev}{sessionvars%urlparameter}">graph</a></li>

        Thomas Arendsen Hein
    
hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...

              r18526
            
      <li><a href="{url|urlescape}tags{sessionvars%urlparameter}">tags</a></li>

      <li><a href="{url|urlescape}bookmarks{sessionvars%urlparameter}">bookmarks</a></li>

      <li><a href="{url|urlescape}branches{sessionvars%urlparameter}">branches</a></li>

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      </ul>

      <ul>

        av6
    
hgweb: don't dereference symbolic revision in paper & coal style (issue2296)...

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      <li><a href="{url|urlescape}rev/{symrev}{sessionvars%urlparameter}">changeset</a></li>

      <li><a href="{url|urlescape}file/{symrev}{path|urlescape}{sessionvars%urlparameter}">browse</a></li>

        Dan Villiom Podlaski Christiansen
    
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      </ul>

      <ul>

      {archives%archiveentry}

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web: add a help view for getting hg help output

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      <ul>

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hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...

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       <li><a href="{url|urlescape}help{sessionvars%urlparameter}">help</a></li>

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web: add a help view for getting hg help output

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      </ul>

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hgweb: add (Atom) subscribe link to the main paper template pages...

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      <div class="atom-logo">

        Thomas Arendsen Hein
    
hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...

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      <a href="{url|urlescape}atom-log" title="subscribe to atom feed">

        Anton Shestakov
    
hgweb: close <img> elements...

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      <img class="atom-logo" src="{staticurl|urlescape}feed-icon-14x14.png" alt="atom feed" />

        Angel Ezquerra
    
hgweb: add (Atom) subscribe link to the main paper template pages...

              r18200
            
      </a>

      </div>

        Dan Villiom Podlaski Christiansen
    
setup: install translation files as package data...

              r9999
            
      </div>

      <div class="main">

        Angel Ezquerra <angel.ezquerra at gmail.com>
    
hgweb: add a "URL breadcrumb" to the index and repository pages...

              r18258
            
      <h2 class="breadcrumb"><a href="/">Mercurial</a> {pathdef%breadcrumb}</h2>

        Dan Villiom Podlaski Christiansen
    
setup: install translation files as package data...

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      <h3>log</h3>

        Thomas Arendsen Hein
    
hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...

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      <form class="search" action="{url|urlescape}log">

        Dan Villiom Podlaski Christiansen
    
setup: install translation files as package data...

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      {sessionvars%hiddenformentry}

        Alexander Plavin
    
hgweb: show current search query in the input field

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      <p><input name="rev" id="search1" type="text" size="30" value="{query|escape}" /></p>

        Alexander Plavin
    
paper: define searchhint message in map file and use it in other templates

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      <div id="hint">{searchhint}</div>

        Dan Villiom Podlaski Christiansen
    
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      </form>

        Dirkjan Ochtman
    
hgweb: add less/more links to shortlog/filelog nav

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      <div class="navigate">

        av6
    
hgweb: don't dereference symbolic revision in paper & coal style (issue2296)...

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      <a href="{url|urlescape}shortlog/{symrev}{lessvars%urlparameter}">less</a>

      <a href="{url|urlescape}shortlog/{symrev}{morevars%urlparameter}">more</a>

        Nicolas Dumazet
    
hgweb: changenav: separate pages before and after the current position...

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      | rev {rev}: {changenav%navshort}

        Dirkjan Ochtman
    
hgweb: add less/more links to shortlog/filelog nav

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      </div>

        Dan Villiom Podlaski Christiansen
    
setup: install translation files as package data...

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      <table class="bigtable">

        Anton Shestakov
    
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      <thead>

        Dan Villiom Podlaski Christiansen
    
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       <tr>

        <th class="age">age</th>

        <th class="author">author</th>

        <th class="description">description</th>

       </tr>

        Anton Shestakov
    
hgweb: replace implicit <tbody> with explicit <thead> where appropriate...

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      </thead>

        Alexander Plavin
    
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      <tbody class="stripes2">

        Dan Villiom Podlaski Christiansen
    
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      {entries%shortlogentry}

        Alexander Plavin
    
hgweb: make stripes in log and search with CSS

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      </tbody>

        Dan Villiom Podlaski Christiansen
    
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      </table>

        Dirkjan Ochtman
    
hgweb: add less/more links to shortlog/filelog nav

              r10246
            
      <div class="navigate">

        av6
    
hgweb: don't dereference symbolic revision in paper & coal style (issue2296)...

              r25606
            
      <a href="{url|urlescape}shortlog/{symrev}{lessvars%urlparameter}">less</a>

      <a href="{url|urlescape}shortlog/{symrev}{morevars%urlparameter}">more</a>

        Nicolas Dumazet
    
hgweb: changenav: separate pages before and after the current position...

              r10254
            
      | rev {rev}: {changenav%navshort}

        Dirkjan Ochtman
    
hgweb: add less/more links to shortlog/filelog nav

              r10246
            
      </div>

        Gregory Szorc
    
hgweb: support Content Security Policy...

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      <script type="text/javascript"{if(nonce, ' nonce="{nonce}"')}>

        Alexander Plavin
    
paper: call ajaxScrollInit in shortlog...

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          ajaxScrollInit(

        Takumi IINO
    
hgweb: avoid invalid infinity scroll request when overwritten web.style...

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                  '{url|urlescape}shortlog/%next%{sessionvars%urlparameter}',

        Alexander Plavin
    
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                  '{nextentry%"{node}"}', <!-- NEXTHASH

        Alexander Plavin
    
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                  function (htmlText, previousVal) \{

                      var m = htmlText.match(/'(\w+)', <!-- NEXTHASH/);

                      return m ? m[1] : null;

                  },

        Yuya Nishihara
    
hgweb: bring back infinite scroll in shortlog of paper style...

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                  '.bigtable > tbody',

        Matt Mackall
    
templater: fix escaping in nested string literals (issue4102)...

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                  '<tr class="%class%">\\

                  <td colspan="3" style="text-align: center;">%text%</td>\\

        Alexander Plavin
    
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                  </tr>'

          );

      </script>

        Dan Villiom Podlaski Christiansen
    
setup: install translation files as package data...

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      </div>

      </div>

      {footer}

	Site-wide shortcuts
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Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	{header}
		<title>{repo\|escape}: log</title>
		<link rel="alternate" type="application/atom+xml"
Thomas Arendsen Hein hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...	r18526	href="{url\|urlescape}atom-log" title="Atom feed for {repo\|escape}" />
Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	<link rel="alternate" type="application/rss+xml"
Thomas Arendsen Hein hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...	r18526	href="{url\|urlescape}rss-log" title="RSS feed for {repo\|escape}" />
Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	</head>
		<body>

		<div class="container">
		<div class="menu">
		<div class="logo">
Steven Stallion hgweb: support alternate logo url...	r13964	<a href="{logourl}">
Thomas Arendsen Hein hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...	r18526	<img src="{staticurl\|urlescape}{logoimg}" alt="mercurial" /></a>
Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	</div>
		<ul>
		<li class="active">log</li>
av6 hgweb: don't dereference symbolic revision in paper & coal style (issue2296)...	r25606	<li><a href="{url\|urlescape}graph/{symrev}{sessionvars%urlparameter}">graph</a></li>
Thomas Arendsen Hein hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...	r18526	<li><a href="{url\|urlescape}tags{sessionvars%urlparameter}">tags</a></li>
		<li><a href="{url\|urlescape}bookmarks{sessionvars%urlparameter}">bookmarks</a></li>
		<li><a href="{url\|urlescape}branches{sessionvars%urlparameter}">branches</a></li>
Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	</ul>
		<ul>
av6 hgweb: don't dereference symbolic revision in paper & coal style (issue2296)...	r25606	<li><a href="{url\|urlescape}rev/{symrev}{sessionvars%urlparameter}">changeset</a></li>
		<li><a href="{url\|urlescape}file/{symrev}{path\|urlescape}{sessionvars%urlparameter}">browse</a></li>
Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	</ul>
		<ul>
		{archives%archiveentry}
		</ul>
Augie Fackler web: add a help view for getting hg help output	r12666	<ul>
Thomas Arendsen Hein hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...	r18526	<li><a href="{url\|urlescape}help{sessionvars%urlparameter}">help</a></li>
Augie Fackler web: add a help view for getting hg help output	r12666	</ul>
Angel Ezquerra hgweb: add (Atom) subscribe link to the main paper template pages...	r18200	<div class="atom-logo">
Thomas Arendsen Hein hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...	r18526	<a href="{url\|urlescape}atom-log" title="subscribe to atom feed">
Anton Shestakov hgweb: close <img> elements...	r23830	<img class="atom-logo" src="{staticurl\|urlescape}feed-icon-14x14.png" alt="atom feed" />
Angel Ezquerra hgweb: add (Atom) subscribe link to the main paper template pages...	r18200	</a>
		</div>
Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	</div>

		<div class="main">
Angel Ezquerra <angel.ezquerra at gmail.com> hgweb: add a "URL breadcrumb" to the index and repository pages...	r18258	<h2 class="breadcrumb"><a href="/">Mercurial</a> {pathdef%breadcrumb}</h2>
Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	<h3>log</h3>

Thomas Arendsen Hein hgweb: urlescape all urls, HTML escape repo/tag/branch/... names...	r18526	<form class="search" action="{url\|urlescape}log">
Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	{sessionvars%hiddenformentry}
Alexander Plavin hgweb: show current search query in the input field	r19396	<p><input name="rev" id="search1" type="text" size="30" value="{query\|escape}" /></p>
Alexander Plavin paper: define searchhint message in map file and use it in other templates	r19795	<div id="hint">{searchhint}</div>
Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	</form>

Dirkjan Ochtman hgweb: add less/more links to shortlog/filelog nav	r10246	<div class="navigate">
av6 hgweb: don't dereference symbolic revision in paper & coal style (issue2296)...	r25606	<a href="{url\|urlescape}shortlog/{symrev}{lessvars%urlparameter}">less</a>
		<a href="{url\|urlescape}shortlog/{symrev}{morevars%urlparameter}">more</a>
Nicolas Dumazet hgweb: changenav: separate pages before and after the current position...	r10254	\| rev {rev}: {changenav%navshort}
Dirkjan Ochtman hgweb: add less/more links to shortlog/filelog nav	r10246	</div>
Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999
		<table class="bigtable">
Anton Shestakov hgweb: replace implicit <tbody> with explicit <thead> where appropriate...	r24054	<thead>
Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	<tr>
		<th class="age">age</th>
		<th class="author">author</th>
		<th class="description">description</th>
		</tr>
Anton Shestakov hgweb: replace implicit <tbody> with explicit <thead> where appropriate...	r24054	</thead>
Alexander Plavin hgweb: make stripes in log and search with CSS	r19452	<tbody class="stripes2">
Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	{entries%shortlogentry}
Alexander Plavin hgweb: make stripes in log and search with CSS	r19452	</tbody>
Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	</table>

Dirkjan Ochtman hgweb: add less/more links to shortlog/filelog nav	r10246	<div class="navigate">
av6 hgweb: don't dereference symbolic revision in paper & coal style (issue2296)...	r25606	<a href="{url\|urlescape}shortlog/{symrev}{lessvars%urlparameter}">less</a>
		<a href="{url\|urlescape}shortlog/{symrev}{morevars%urlparameter}">more</a>
Nicolas Dumazet hgweb: changenav: separate pages before and after the current position...	r10254	\| rev {rev}: {changenav%navshort}
Dirkjan Ochtman hgweb: add less/more links to shortlog/filelog nav	r10246	</div>

Gregory Szorc hgweb: support Content Security Policy...	r30766	<script type="text/javascript"{if(nonce, ' nonce="{nonce}"')}>
Alexander Plavin paper: call ajaxScrollInit in shortlog...	r19747	ajaxScrollInit(
Takumi IINO hgweb: avoid invalid infinity scroll request when overwritten web.style...	r20253	'{url\|urlescape}shortlog/%next%{sessionvars%urlparameter}',
Alexander Plavin paper: call ajaxScrollInit in shortlog...	r19747	'{nextentry%"{node}"}', <!-- NEXTHASH
Alexander Plavin hgweb: make infinite scroll handling more generic and extensible...	r19781	function (htmlText, previousVal) \{
		var m = htmlText.match(/'(\w+)', <!-- NEXTHASH/);
		return m ? m[1] : null;
		},
Yuya Nishihara hgweb: bring back infinite scroll in shortlog of paper style...	r24952	'.bigtable > tbody',
Matt Mackall templater: fix escaping in nested string literals (issue4102)...	r20066	'<tr class="%class%">\\
		<td colspan="3" style="text-align: center;">%text%</td>\\
Alexander Plavin paper: call ajaxScrollInit in shortlog...	r19747	</tr>'
		);
		</script>

Dan Villiom Podlaski Christiansen setup: install translation files as package data...	r9999	</div>
		</div>

		{footer}