[pypy-commit] pypy.org extradoc: Try to expand a bit the "features" page, and change its title to "What
arigo
noreply at buildbot.pypy.org
Sun Nov 2 16:53:14 CET 2014
Author: Armin Rigo <arigo at tunes.org>
Branch: extradoc
Changeset: r551:0434ccc41610
Date: 2014-11-02 16:52 +0100
http://bitbucket.org/pypy/pypy.org/changeset/0434ccc41610/
Log: Try to expand a bit the "features" page, and change its title to
"What is PyPy?"
diff --git a/archive.html b/archive.html
--- a/archive.html
+++ b/archive.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
- <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">Features</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
<hr class="clear" />
</div>
<div id="content">
diff --git a/compat.html b/compat.html
--- a/compat.html
+++ b/compat.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
- <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">Features</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
<hr class="clear" />
</div>
<div id="content">
diff --git a/contact.html b/contact.html
--- a/contact.html
+++ b/contact.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
- <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">Features</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
<hr class="clear" />
</div>
<div id="content">
diff --git a/download.html b/download.html
--- a/download.html
+++ b/download.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
- <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">Features</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
<hr class="clear" />
</div>
<div id="content">
diff --git a/features.html b/features.html
--- a/features.html
+++ b/features.html
@@ -1,7 +1,7 @@
<!DOCTYPE html>
<html>
<head>
- <title>PyPy - Features</title>
+ <title>PyPy - What is PyPy?</title>
<meta http-equiv="content-language" content="en" />
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<meta name="author" content="PyPy Team" />
@@ -38,13 +38,16 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
- <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">Features</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
<hr class="clear" />
</div>
<div id="content">
<div>
<div id="main">
-<h1 class="title">Features</h1>
+<h1 class="title">What is PyPy?</h1>
+<p>PyPy is a replacement for CPython. It is built using the RPython
+language that was co-developed with it. The main reason to use it
+instead of CPython is speed: it runs generally faster (see next section).</p>
<p><strong>PyPy 2.4</strong> implements <strong>Python 2.7.8</strong> and runs on Intel
<a class="reference external" href="http://en.wikipedia.org/wiki/IA-32">x86 (IA-32)</a> , <a class="reference external" href="http://en.wikipedia.org/wiki/X86_64">x86_64</a> and <a class="reference external" href="http://en.wikipedia.org/wiki/ARM">ARM</a> platforms, with PPC being
stalled. It supports all of the core language, passing the Python test suite
@@ -53,10 +56,54 @@
standard library modules. For known differences with CPython, see our
<a class="reference external" href="compat.html">compatibility</a> page.</p>
<p>If you are interested in helping to move forward, see our <a class="reference external" href="howtohelp.html">howtohelp</a> page.</p>
+<p>We also have a beta release of <strong>PyPy3</strong> which implements <strong>Python 3.2.5</strong>.
+It runs on the same platforms as above.</p>
+<div class="section" id="the-main-features-of-pypy">
+<h1>The main features of PyPy:</h1>
+</div>
<div class="section" id="speed">
<h1>Speed</h1>
<p>Our <a class="reference external" href="download.html#with-a-jit-compiler">main executable</a> comes with a Just-in-Time compiler. It is
-<a class="reference external" href="http://speed.pypy.org/">really fast</a> in running most benchmarks. <a class="reference external" href="download.html#with-a-jit-compiler">Try it out!</a></p>
+<a class="reference external" href="http://speed.pypy.org/">really fast</a> in running most benchmarks – including very large and
+complicated Python applications, not just 10-liners.</p>
+<p>There are two cases that you should be aware where PyPy will <em>not</em> be
+able to speed up your code:</p>
+<ul class="simple">
+<li>Short-running processes: if it doesn't run for at least a few seconds,
+then the JIT compiler won't have enough time to warm up.</li>
+<li>If all the time is spent in run-time libraries (i.e. in C functions),
+and not actually running Python code, the JIT compiler will not help.</li>
+</ul>
+<p>So the case where PyPy works best is when executing long-running
+programs where a significant fraction of the time is spent executing
+Python code. This is the case covered by the majority of <a class="reference external" href="http://speed.pypy.org/">our
+benchmarks</a>, but not all of them – the goal of PyPy is to get speed
+but still support (ideally) any Python program.</p>
+</div>
+<div class="section" id="memory-usage">
+<h1>Memory usage</h1>
+<p>Memory-hungry Python programs (several hundreds of MBs or more) might
+end up taking less space than they do in CPython. It is not always
+the case, though, as it depends on a lot of details. Also note that
+the baseline is higher than CPython's.</p>
+</div>
+<div class="section" id="stackless">
+<h1>Stackless</h1>
+<p>Support for <a class="reference external" href="http://www.stackless.com/">Stackless</a> and greenlets are now integrated in the normal
+PyPy. More detailed information is available <a class="reference external" href="http://doc.pypy.org/en/latest/stackless.html">here</a>.</p>
+</div>
+<div class="section" id="other-features">
+<h1>Other features</h1>
+<p>PyPy has many secondary features and semi-independent
+projects. We will mention here:</p>
+<ul>
+<li><p class="first"><strong>Other languages:</strong> we also implemented other languages that makes
+use of our RPython toolchain: <a class="reference external" href="https://bitbucket.org/cfbolz/pyrolog/">Prolog</a> (almost complete), as
+well as <a class="reference external" href="https://bitbucket.org/pypy/lang-smalltalk/">Smalltalk</a>, <a class="reference external" href="https://bitbucket.org/pypy/lang-js/">JavaScript</a>, <a class="reference external" href="https://bitbucket.org/pypy/lang-io/">Io</a>, <a class="reference external" href="https://bitbucket.org/pypy/lang-scheme/">Scheme</a> and <a class="reference external" href="https://bitbucket.org/pypy/lang-gameboy/">Gameboy</a>.</p>
+<p>There is also a Ruby implementation called <a class="reference external" href="http://topazruby.com/">Topaz</a> and a PHP implementation
+called <a class="reference external" href="http://www.hippyvm.com/">HippyVM</a>.</p>
+</li>
+</ul>
</div>
<div class="section" id="sandboxing">
<h1>Sandboxing</h1>
@@ -65,6 +112,8 @@
try to limit language features considered “unsafe”. Instead we replace all
calls to external libraries (C or platform) with a stub that communicates
with an external process handling the policy.</p>
+<p>Please be aware that it is a <strong>prototype</strong> only. It needs work to become
+more complete, and you are welcome to help.</p>
<p>To run the sandboxed process, you need <a class="reference external" href="download.html#sandboxed-version">pypy-sandbox</a>. You also need to
get the <a class="reference external" href="download.html#translate">full sources</a> (step 1 only). Run:</p>
<pre class="literal-block">
@@ -85,24 +134,6 @@
<p>To read more about its features, try <tt class="docutils literal">pypy_interact.py <span class="pre">--help</span></tt> or go to
<a class="reference external" href="http://pypy.readthedocs.org/en/latest/sandbox.html">our documentation site</a>.</p>
</div>
-<div class="section" id="stackless">
-<h1>Stackless</h1>
-<p>Support for <a class="reference external" href="http://www.stackless.com/">Stackless</a> and greenlets are now integrated in the normal
-PyPy. More detailed information is available <a class="reference external" href="http://doc.pypy.org/en/latest/stackless.html">here</a>.</p>
-</div>
-<div class="section" id="other-features">
-<h1>Other features</h1>
-<p>PyPy has many secondary features and semi-independent
-projects. We will mention here:</p>
-<ul>
-<li><p class="first"><strong>Other languages:</strong> we also implemented other languages that makes
-use of our RPython toolchain: <a class="reference external" href="https://bitbucket.org/cfbolz/pyrolog/">Prolog</a> (almost complete), as
-well as <a class="reference external" href="https://bitbucket.org/pypy/lang-smalltalk/">Smalltalk</a>, <a class="reference external" href="https://bitbucket.org/pypy/lang-js/">JavaScript</a>, <a class="reference external" href="https://bitbucket.org/pypy/lang-io/">Io</a>, <a class="reference external" href="https://bitbucket.org/pypy/lang-scheme/">Scheme</a> and <a class="reference external" href="https://bitbucket.org/pypy/lang-gameboy/">Gameboy</a>.</p>
-<p>There is also a Ruby implementation called <a class="reference external" href="http://topazruby.com/">Topaz</a> and a PHP implementation
-called <a class="reference external" href="http://www.hippyvm.com/">HippyVM</a>.</p>
-</li>
-</ul>
-</div>
</div>
<div id="sidebar">
</div>
diff --git a/howtohelp.html b/howtohelp.html
--- a/howtohelp.html
+++ b/howtohelp.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
- <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">Features</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
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</div>
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diff --git a/index.html b/index.html
--- a/index.html
+++ b/index.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
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+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
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diff --git a/numpydonate.html b/numpydonate.html
--- a/numpydonate.html
+++ b/numpydonate.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
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+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
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diff --git a/people.html b/people.html
--- a/people.html
+++ b/people.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
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+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
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diff --git a/performance.html b/performance.html
--- a/performance.html
+++ b/performance.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
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+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
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diff --git a/py3donate.html b/py3donate.html
--- a/py3donate.html
+++ b/py3donate.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
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+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
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diff --git a/source/_layouts/site.genshi b/source/_layouts/site.genshi
--- a/source/_layouts/site.genshi
+++ b/source/_layouts/site.genshi
@@ -5,7 +5,7 @@
section_data = {
'code': [
('Home', 'index.html'),
- ('Features', 'features.html'),
+ ('What is PyPy?', 'features.html'),
('Download', 'download.html'),
('Compatibility', 'compat.html'),
('Performance', 'performance.html'),
diff --git a/source/features.txt b/source/features.txt
--- a/source/features.txt
+++ b/source/features.txt
@@ -1,11 +1,15 @@
---
layout: page
-title: Features
+title: What is PyPy?
---
-PyPy features
+What is PyPy?
===========================================================
+PyPy is a replacement for CPython. It is built using the RPython
+language that was co-developed with it. The main reason to use it
+instead of CPython is speed: it runs generally faster (see next section).
+
**PyPy 2.4** implements **Python 2.7.8** and runs on Intel
`x86 (IA-32)`_ , `x86_64`_ and `ARM`_ platforms, with PPC being
stalled. It supports all of the core language, passing the Python test suite
@@ -16,6 +20,9 @@
If you are interested in helping to move forward, see our `howtohelp`_ page.
+We also have a beta release of **PyPy3** which implements **Python 3.2.5**.
+It runs on the same platforms as above.
+
.. _`compatibility`: compat.html
.. _`x86 (IA-32)`: http://en.wikipedia.org/wiki/IA-32
.. _`x86_64`: http://en.wikipedia.org/wiki/X86_64
@@ -23,15 +30,69 @@
.. _`howtohelp`: howtohelp.html
+
+The main features of PyPy:
+--------------------------
+
Speed
-----
Our `main executable`_ comes with a Just-in-Time compiler. It is
-`really fast`_ in running most benchmarks. `Try it out!`_
+`really fast`_ in running most benchmarks --- including very large and
+complicated Python applications, not just 10-liners.
+
+There are two cases that you should be aware where PyPy will *not* be
+able to speed up your code:
+
+* Short-running processes: if it doesn't run for at least a few seconds,
+ then the JIT compiler won't have enough time to warm up.
+
+* If all the time is spent in run-time libraries (i.e. in C functions),
+ and not actually running Python code, the JIT compiler will not help.
+
+So the case where PyPy works best is when executing long-running
+programs where a significant fraction of the time is spent executing
+Python code. This is the case covered by the majority of `our
+benchmarks`_, but not all of them --- the goal of PyPy is to get speed
+but still support (ideally) any Python program.
.. _`main executable`: download.html#with-a-jit-compiler
-.. _`Try it out!`: download.html#with-a-jit-compiler
.. _`really fast`: http://speed.pypy.org/
+.. _`our benchmarks`: http://speed.pypy.org/
+
+
+Memory usage
+--------------------------
+
+Memory-hungry Python programs (several hundreds of MBs or more) might
+end up taking less space than they do in CPython. It is not always
+the case, though, as it depends on a lot of details. Also note that
+the baseline is higher than CPython's.
+
+
+Stackless
+--------------------------
+
+Support for Stackless_ and greenlets are now integrated in the normal
+PyPy. More detailed information is available here__.
+
+.. _Stackless: http://www.stackless.com/
+.. __: http://doc.pypy.org/en/latest/stackless.html
+
+
+Other features
+---------------------------------------
+
+PyPy has many secondary features and semi-independent
+projects. We will mention here:
+
+* **Other languages:** we also implemented other languages that makes
+ use of our RPython toolchain: Prolog_ (almost complete), as
+ well as Smalltalk_, JavaScript_, Io_, Scheme_ and Gameboy_.
+
+ There is also a Ruby implementation called Topaz_ and a PHP implementation
+ called HippyVM_.
+
Sandboxing
--------------------
@@ -42,6 +103,9 @@
calls to external libraries (C or platform) with a stub that communicates
with an external process handling the policy.
+Please be aware that it is a **prototype** only. It needs work to become
+more complete, and you are welcome to help.
+
To run the sandboxed process, you need `pypy-sandbox`_. You also need to
get the `full sources`_ (step 1 only). Run::
@@ -68,28 +132,6 @@
.. _`our documentation site`: http://pypy.readthedocs.org/en/latest/sandbox.html
-Stackless
---------------------------
-
-Support for Stackless_ and greenlets are now integrated in the normal
-PyPy. More detailed information is available here__.
-
-.. _Stackless: http://www.stackless.com/
-.. __: http://doc.pypy.org/en/latest/stackless.html
-
-
-Other features
----------------------------------------
-
-PyPy has many secondary features and semi-independent
-projects. We will mention here:
-
-* **Other languages:** we also implemented other languages that makes
- use of our RPython toolchain: Prolog_ (almost complete), as
- well as Smalltalk_, JavaScript_, Io_, Scheme_ and Gameboy_.
-
- There is also a Ruby implementation called Topaz_ and a PHP implementation
- called HippyVM_.
.. _`the cli-jit branch`: https://bitbucket.org/pypy/pypy/src/cli-jit
diff --git a/sponsor.html b/sponsor.html
--- a/sponsor.html
+++ b/sponsor.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
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+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
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</div>
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diff --git a/success.html b/success.html
--- a/success.html
+++ b/success.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
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+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
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diff --git a/tmdonate.html b/tmdonate.html
--- a/tmdonate.html
+++ b/tmdonate.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
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+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
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diff --git a/tmdonate2.html b/tmdonate2.html
--- a/tmdonate2.html
+++ b/tmdonate2.html
@@ -38,7 +38,7 @@
</div>
<div id="logo"><a href="http://pypy.org"><img src="image/pypy-logo.png" alt="PyPy" height="110px" /></a></div>
<hr class="clear-left" />
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+ <div id="menu-sub"><a href="index.html">Home</a><span class="menu-sub-sep"> | </span><a href="features.html">What is PyPy?</a><span class="menu-sub-sep"> | </span><a href="download.html">Download</a><span class="menu-sub-sep"> | </span><a href="compat.html">Compatibility</a><span class="menu-sub-sep"> | </span><a href="performance.html">Performance</a><span class="menu-sub-sep"> | </span><a href="http://doc.pypy.org">Dev Documentation</a><span class="menu-sub-sep"> | </span><a href="http://morepypy.blogspot.com">Blog</a><span class="menu-sub-sep"> | </span><a href="people.html">People</a><span class="menu-sub-sep"> | </span><a href="contact.html">Contact</a><span class="menu-sub-sep"> | </span><a href="py3donate.html">Py3k donations</a><span class="menu-sub-sep"> | </span><a href="numpydonate.html">NumPy donations</a><span class="menu-sub-sep"> | </span><a href="tmdonate2.html">STM donations</a></div>
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