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2016-02-24 15:22:44 -05:00

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Deploying PHP 7</title>
<meta name="description" content="Deploying PHP 7">
<meta name="author" content="Rasmus Lerdorf">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
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</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section>
<h1>Deploying PHP 7</h1>
<h3>Confoo</h3>
<h3>Montreal</h3>
<h3>Feb.25, 2016</h3>
<a href="http://talks.php.net/confoo16a">http://talks.php.net/confoo16a</a><br><br>
<p>Rasmus Lerdorf<br>
<small><a href="http://twitter.com/@rasmus">@rasmus</a></small>
</p>
<aside class="notes">
</aside>
</section>
<section>
<section id="bc7">
<h1 style="text-align:center;">Top-5 Things that might bite you</h1>
<br/>
<br/>
<br/>
<p class="p" style="font-size:1.5em;text-align:center;">For the full list see</p>
<div align="center" style="font-size: 1.25em; color: ; text-align: center; margin-left: ; margin-right: ; margin-top: -0.75em; margin-bottom: ;"><a href="http://php.net/manual/en/migration70.php" target="">php.net/migration70</a></div>
</section>
<section id="bc7_1">
<p class="p" style="font-size:1.1em;text-align:left;">Left-to-right semantics for complicated expressions</p>
<pre><code class="php" data-trim style="font-size:1.1em;">$$foo['bar']['baz'] // interpreted as ($$foo)['bar']['baz']
$foo-&gt;$bar['baz'] // interpreted as ($foo-&gt;$bar)['baz']
$foo-&gt;$bar['baz']() // interpreted as ($foo-&gt;$bar)['baz']()
Foo::$bar['baz']() // interpreted as (Foo::$bar)['baz']()</code></pre>
<p class="p" style="font-size:0.8em;text-align:left;">To restore the previous behaviour add explicit curly braces:</p>
<pre><code class="php" data-trim style="font-size:1.1em;">${$foo['bar']['baz']}
$foo-&gt;{$bar['baz']}
$foo-&gt;{$bar['baz']}()
Foo::{$bar['baz']}()</code></pre>
<p class="p" style="font-size:0.8em;text-align:left;">Detection: phan or unit test failures</p>
</section>
<section id="bc7_2">
<p class="p" style="font-size:1.1em;text-align:left;">Removed support for /e (PREG_REPLACE_EVAL) modifier</p>
<pre><code class="php" data-trim style="font-size:1.1em;">echo preg_replace('/:-:(.*?):-:/e', '$this-&gt;pres-&gt;\\1', $text);</code></pre>
<p class="p" style="font-size:0.8em;text-align:left;">Change to:</p>
<pre><code class="php" data-trim style="font-size:1.1em;">echo preg_replace_callback(
'/:-:(.*?):-:/',
function($matches) {
return $this-&gt;pres-&gt;{$matches[1]}; // Careful!
},
$text);</code></pre>
<p class="p" style="font-size:0.8em;text-align:left;">Detection: grep, warnings in logs or unit test failures</p>
</section>
<section id="bc7_3">
<p class="p" style="font-size:1.1em;text-align:left;">$HTTP_RAW_POST_DATA global removed</p>
<pre><code class="php" data-trim style="font-size:1em;">if (empty($GLOBALS['HTTP_RAW_POST_DATA']) &amp;&amp;
strpos($_SERVER['CONTENT_TYPE'], 'www-form-urlencoded') === false) {
$GLOBALS['HTTP_RAW_POST_DATA'] = file_get_contents(&quot;php://input&quot;);
}</code></pre>
<p class="p" style="font-size:0.8em;text-align:left;">Detection: grep, warnings in logs or unit test failures</p>
</section>
<section id="bc7_4">
<p class="p" style="font-size:1.1em;text-align:left;">session.lazy_write enabled by default</p>
<pre><code class="ini" data-trim style="font-size:1.1em;">session.lazy_write = 0</code></pre>
<p class="p" style="font-size:0.8em;text-align:left;">Detection: Can cause out-of-band session read timing issues</p>
</section>
<section id="bc7_5">
<p class="p" style="font-size:1.1em;text-align:left;">Invalid octal literals now produce a parse error</p>
<pre><code class="php" data-trim style="font-size:1.1em;">echo 05678; // PHP 5.x outputs 375</code></pre>
<pre class="output" style="font-size:0.5em;">Parse error: Invalid numeric literal in file.php on line 2 </pre> <p class="p" style="font-size:0.8em;text-align:left;">Detecting parse errors is easy: php -l</p>
</section> </section>
<section>
<section id="phan">
<h1 style="text-align:center;">Static Analysis</h1>
<br/>
<br/>
<br/>
<div align="center" style="font-size: 1.25em; color: ; text-align: center; margin-left: ; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/etsy/phan" target="">github.com/etsy/phan</a></div>
</section>
<section id="phan1">
<pre><code class="shell nohighlight" data-trim style="font-size:0.8em;">% phan -h
Usage: ./phan [options] [files...]
-f, --file-list &lt;filename&gt;
A file containing a list of PHP files to be analyzed
-r, --file-list-only
A file containing a list of PHP files to be analyzed to the
exclusion of any other directories or files passed in. This
is useful when running Phan from a stored state file and
passing in a small subset of files to be re-analyzed.
-l, --directory &lt;directory&gt;
A directory to recursively read PHP files from to analyze
-3, --exclude-directory-list &lt;dir_list&gt;
A comma-separated list of directories for which any files
included from that directory will not be analysis. Note
that adding a directory here will not cause its files to
be parsed.
-d, --project-root-directory
Hunt for a directory named .phan in the current or parent
directory and read configuration file config.php from that
path.
-m &lt;mode&gt;, --output-mode
Output mode from 'text', 'json', 'codeclimate', or 'checkstyle'
-o, --output &lt;filename&gt;
Output filename
-p, --progress-bar
Show progress bar
-a, --dump-ast
Emit an AST for each file rather than analyze
-e, --expand-file-list
Expand the list of files passed in to include any files
that depend on elements defined in those files. This is
useful when running Phan from a state file and passing in
just the set of changed files.
-q, --quick
Quick mode - doesn't recurse into all function calls
-b, --backward-compatibility-checks
Check for potential PHP 5 -&gt; PHP 7 BC issues
-i, --ignore-undeclared
Ignore undeclared functions and classes
-y, --minimum-severity &lt;level in {0,5,10}&gt;
Minimum severity level (low=0, normal=5, critical=10) to report.
Defaults to 0.
-c, --parent-constructor-required
Comma-separated list of classes that require
parent::__construct() to be called
-x, --dead-code-detection
Emit issues for classes, methods, functions, constants and
properties that are probably never referenced and can
possibly be removed.
-j, --processes &lt;int&gt;
The number of parallel processes to run during the analysis
phase. Defaults to 1.
-z, --signature-compatibility
Analyze signatures for methods that are overrides to ensure
compatiiblity with what they're overriding.
-h,--help
This help information</code></pre>
</section>
<section id="phan2">
<pre><code class="shell nohighlight" data-trim style="font-size:0.8em;">% phan -i -b display.php
display.php:416 CompatError expression may not be PHP 7 compatible</code></pre>
<pre><code data-trim style="font-size:1em;">echo preg_replace('/:-:(.*?):-:/e', '$this-&gt;pres-&gt;\\1', $text);</code></pre>
<pre><code data-trim style="font-size:1em;">echo preg_replace_callback(
'/:-:(.*?):-:/',
function($matches) {
return $this-&gt;pres-&gt;$matches[1]; // Oops!
},
$text);</code></pre>
<pre><code data-trim style="font-size:1em;">echo preg_replace_callback(
'/:-:(.*?):-:/',
function($matches) {
return $this-&gt;pres-&gt;{$matches[1]}; // Ok
},
$text);</code></pre>
</section>
<section id="phan3">
<pre><code class="shell nohighlight" data-trim style="font-size:0.8em;">% git clone https://github.com/Seldaek/monolog.git
% cd monolog
% find . -name '*.php' | grep -v test &gt; filelist.txt
% phan -i -f filelist.txt
./src/Monolog/Handler/ChromePHPHandler.php:178 PhanTypeMismatchReturn Returning type int but headersAccepted() is declared to return bool
./src/Monolog/Handler/ElasticSearchHandler.php:124 PhanTypeMismatchArgumentInternal Argument 3 (previous) is \elastica\exception\exceptioninterface but \runtimeexception::__construct() takes \runtimeexception|\throwable
./src/Monolog/Handler/FirePHPHandler.php:81 PhanTypeMismatchReturn Returning type array but createRecordHeader() is declared to return string
./src/Monolog/Handler/FirePHPHandler.php:153 PhanTypeMismatchArgumentInternal Argument 1 (array_arg) is string but \current() takes array
./src/Monolog/Handler/FirePHPHandler.php:154 PhanTypeMismatchArgumentInternal Argument 1 (array_arg) is string but \current() takes array
./src/Monolog/Handler/FirePHPHandler.php:154 PhanTypeMismatchArgumentInternal Argument 1 (array_arg) is string but \key() takes array
./src/Monolog/Handler/FlowdockHandler.php:70 PhanTypeMissingReturn Method \monolog\handler\flowdockhandler::getdefaultformatter is declared to return \monolog\formatter\formatterinterface but has no return value
./src/Monolog/Handler/GelfHandler.php:55 PhanTypeMismatchProperty Assigning null to property but \monolog\handler\gelfhandler::publisher is \gelf\imessagepublisher|\gelf\publisher|\gelf\publisherinterface
./src/Monolog/Handler/MandrillHandler.php:49 PhanSignatureMismatch Declaration of function send($content, array $records) should be compatible with function send(string $content, array $records) defined in ./src/Monolog/Handler/MailHandler.php:46
./src/Monolog/Handler/NativeMailerHandler.php:117 PhanSignatureMismatch Declaration of function send($content, array $records) should be compatible with function send(string $content, array $records) defined in ./src/Monolog/Handler/MailHandler.php:46
./src/Monolog/Handler/RedisHandler.php:41 PhanTypeMismatchDefault Default value for int $capSize can't be bool
./src/Monolog/Handler/SocketHandler.php:115 PhanTypeMismatchProperty Assigning float to property but \monolog\handler\sockethandler::timeout is int
./src/Monolog/Handler/SocketHandler.php:126 PhanTypeMismatchProperty Assigning float to property but \monolog\handler\sockethandler::writingTimeout is int
./src/Monolog/Handler/SocketHandler.php:218 PhanTypeMismatchArgumentInternal Argument 2 (seconds) is float but \stream_set_timeout() takes int
./src/Monolog/Handler/SocketHandler.php:218 PhanTypeMismatchArgumentInternal Argument 3 (microseconds) is float but \stream_set_timeout() takes int
./src/Monolog/Handler/SocketHandler.php:274 PhanTypeMismatchProperty Assigning resource to property but \monolog\handler\sockethandler::resource is null
./src/Monolog/Handler/StreamHandler.php:65 PhanTypeMismatchProperty Assigning null to property but \monolog\handler\streamhandler::stream is resource|string
./src/Monolog/Handler/StreamHandler.php:86 PhanTypeMismatchProperty Assigning null to property but \monolog\handler\streamhandler::stream is resource|string
./src/Monolog/Handler/StreamHandler.php:105 PhanTypeMismatchProperty Assigning array|string to property but \monolog\handler\streamhandler::errorMessage is null
./src/Monolog/Handler/SwiftMailerHandler.php:43 PhanSignatureMismatch Declaration of function send($content, array $records) should be compatible with function send(string $content, array $records) defined in ./src/Monolog/Handler/MailHandler.php:46
./src/Monolog/Handler/SyslogUdp/UdpSocket.php:38 PhanTypeMismatchProperty Assigning null to property but \monolog\handler\syslogudp\udpsocket::socket is resource</code></pre>
</section>
<section id="phan4">
<pre><code class="shell nohighlight" data-trim style="font-size:0.8em;">ChromePHPHandler.php:178 PhanTypeMismatchReturn Returning type int but headersAccepted() is declared to return bool</code></pre>
<pre><code class="php" data-trim style="font-size:1em;">/**
* Verifies if the headers are accepted by the current user agent
*
* @return Boolean
*/
protected function headersAccepted() {
if (empty($_SERVER['HTTP_USER_AGENT'])) {
return false;
}
return preg_match('{\bChrome/\d+[\.\d+]*\b}', $_SERVER['HTTP_USER_AGENT']);
}</code></pre>
<img src="/presentations/slides/intro/preg_match.png" align="center" width="1050" height="170">
</section>
<section id="phan5">
<pre><code class="shell nohighlight" data-trim style="font-size:0.8em;">FirePHPHandler.php:154 PhanTypeMismatchArgumentInternal Argument 1 (array_arg) is string but \current() takes array</code></pre>
<pre><code class="php" data-trim style="font-size:0.8em;">/**
* Base header creation function used by init headers &amp; record headers
*
* @param array $meta Wildfire Plugin, Protocol &amp; Structure Indexes
* @param string $message Log message
* @return array Complete header string ready for the client as key and message as value
*/
protected function createHeader(array $meta, $message) {
$header = sprintf('%s-%s', self::HEADER_PREFIX, join('-', $meta));
return array($header =&gt; $message);
}
/**
* Creates message header from record
*
* @see createHeader()
* @param array $record
* @return string
*/
protected function createRecordHeader(array $record)
{
// Wildfire is extensible to support multiple protocols &amp; plugins in a single request,
// but we're not taking advantage of that (yet), so we're using &quot;1&quot; for simplicity's sake.
return $this-&gt;createHeader(
array(1, 1, 1, self::$messageIndex++),
$record['formatted']
);
}
/**
* Creates &amp; sends header for a record, ensuring init headers have been sent prior
*
* @see sendHeader()
* @see sendInitHeaders()
* @param array $record
*/
protected function write(array $record)
{
if (!self::$sendHeaders) {
return;
}
// WildFire-specific headers must be sent prior to any messages
if (!self::$initialized) {
self::$initialized = true;
self::$sendHeaders = $this-&gt;headersAccepted();
if (!self::$sendHeaders) {
return;
}
foreach ($this-&gt;getInitHeaders() as $header =&gt; $content) {
$this-&gt;sendHeader($header, $content);
}
}
$header = $this-&gt;createRecordHeader($record);
if (trim(current($header)) !== '') {
$this-&gt;sendHeader(key($header), current($header));
}
}</code></pre>
</section> </section>
<section>
<section id="deploy">
<h1 style="text-align:center;">Let's deploy it!</h1>
</section>
<section id="deploy0">
<p class="p" style="font-size:2em;text-align:left;">Atomic</p>
<p class="p" style="font-size:2em;text-align:left;">No performance hit</p>
<ul>
<li style="font-size: 1.5em;">No restarts</li>
<li style="font-size: 1.5em;">No LB removal</li>
<li style="font-size: 1.5em;">No thundering herd</li>
<li style="font-size: 1.5em;">Cache reuse</li>
</ul>
</section>
<section id="deploy1">
<p class="p" style="font-size:1.1em;text-align:left;">Must be able to serve two versions of the site concurrently!</p>
<img src="/presentations/slides/intro/atomic_deploy1.png" width="" height="">
</section>
<section id="deploy2">
<img src="/presentations/slides/intro/atomic_deploy2.png" width="" height="">
</section>
<section id="deploy3">
<p class="p" style="font-size:1.1em;text-align:left;">Requests that begin on DocumentRoot A must finish on A</p>
</section>
<section id="deploy4">
<p class="p" style="font-size:1.1em;text-align:left;">Set the DocumentRoot to symlink target!</p>
<p class="p" style="font-size:1.1em;text-align:left;">Easy with nginx</p>
<pre><code class="ini" data-trim style="font-size:1.1em;">fastcgi_param DOCUMENT_ROOT $realpath_root</code></pre>
<p class="p" style="font-size:1.1em;text-align:left;">Apache</p>
<div align="left" style="font-size: 1.25em; color: ; text-align: left; margin-left: 1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/etsy/mod_realdoc" target="">github.com/etsy/mod_realdoc</a></div>
</section>
<section id="deploy5">
<p class="p" style="font-size:1.1em;text-align:left;">Avoid hardcoding full paths</p>
<p class="p" style="font-size:1.1em;text-align:left;">Watch your include_path setting</p>
<p class="p" style="font-size:1.1em;text-align:left;">incpath extension can resolve your include_path for you</p>
<div align="left" style="font-size: 1.25em; color: ; text-align: left; margin-left: 1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/etsy/incpath" target="">https://github.com/etsy/incpath</a></div>
</section>
<section id="deploy6">
<p class="p" style="font-size:1.1em;text-align:left;">Version all static assets</p>
<p class="p" style="font-size:1.1em;text-align:left;">DB Schema changes need special care</p>
</section> </section>
<section>
<section id="etsy_deploy">
<h2 style="text-align:center;">How do you manage deploys?</h2>
</section>
<section id="etsy_deploy0">
<p class="p" style="font-size:2em;text-align:left;">At Etsy we use irc</p>
<pre><code class="shell nohighlight" data-trim style="font-size:0.9em;">Channel: #push Topic: &lt;prod&gt; *joe frank|bob
devbot: Swapping symlinks. Your code is about to start taking production traffic
pushbot: joe frank : Your code is live. Time to watch graphs: http://etsy/abcd
Rasmus: .join
*** pushbot has changed the topic on #push to &lt;prod&gt; joe frank|bob Rasmus
frank: .good
*** pushbot has changed the topic on #push to &lt;prod&gt; *joe *frank|bob Rasmus
joe: .done
*** pushbot has changed the topic on #push to &lt;prod&gt; bob Rasmus
pushbot: bob Rasmus: You're up
bob: .in
*** pushbot has changed the topic on #push *bob Rasmus
Rasmus: .in
*** pushbot has changed the topic on #push *bob *Rasmus</code></pre>
</section>
<section id="etsy_deploy1">
<p class="p" style="font-size:2em;text-align:left;">pushbot commands</p>
<ul>
<li style="list-style-type: none;"><strong>.join</strong>    - join push queue</li>
<li style="list-style-type: none;"><strong>.in</strong>        - code has been pushed</li>
<li style="list-style-type: none;"><strong>.good</strong> - your stuff looks good</li>
<li style="list-style-type: none;"><strong>.uhoh</strong> - your stuff looks bad</li>
<li style="list-style-type: none;"><strong>.hold</strong>  - there is a problem, hold everything</li>
<li style="list-style-type: none;"><strong>.nm</strong>     - never mind (leave queue)</li>
<li style="list-style-type: none;"><strong>.done</strong> - push done</li>
</ul>
</section>
<section id="etsy_deploy2">
<img src="/presentations/slides/intro/deployinator.png" width="" height="">
</section>
<section id="etsy_deploy3">
<pre><code class="shell nohighlight" data-trim style="font-size:0.9em;">Channel: #push Topic: &lt;princess&gt; bob Rasmus
Jenkins: Starting build #36803 for job qa
Jenkins: Starting build #38784 for job princess
Jenkins: Project qa build #36803: SUCCESS in 6 min 19 sec: http://ci/job/qa/36803/
pushbot: bob Rasmus : qa tests have passed
devbot: [who_tried] Everyone in this push has run Try recently. w00t!
Jenkins: Project princess build #38784: SUCCESS in 1 min 10 sec: http://ci/job/princess/38784/
pushbot: bob Rasmus : princess tests have passed
bob: .good
Rasmus: .good
*** pushbot has changed the topic on #push to &lt;princess&gt; *bob *Rasmus
pushbot: bob Rasmus : everyone is ready, checking on Jenkins...
Jenkins: qa: last build: 36803 (9 min 5 sec ago): SUCCESS: http://ci/job/qa/36803/
Jenkins: princess: last build: 38784 (2 min 54 sec ago): SUCCESS: http://ci/job/princess/38784/</code></pre>
</section>
<section id="etsy_deploy4">
<p class="p" style="font-size:2.5em;text-align:left;">Deploy to Production:</p>
<ul>
<li style="font-size: 2em;">ssh to deploy host</li>
<li style="font-size: 2em;">dsh to all targets</li>
<li style="font-size: 2em;">rsync files</li>
</ul>
</section>
<section id="etsy_deploy5">
<pre><code class="shell nohighlight" data-trim style="font-size:0.9em;">Channel: #push Topic: &lt;prod&gt; bob Rasmus
devbot: Swapping symlinks. Your code is about to start taking production traffic
pushbot: bob Rasmus : Your code is live. Time to watch graphs: http://etsy/et5cp
Jenkins: Starting build #39452 for job prod
pushbot: bob Rasmus : prod tests have passed
Jenkins: Project prod build #39452: SUCCESS in 30 sec: http://ci/job/prod/39452/
bob: .good
Rasmus: .good
*** pushbot has changed the topic on #push to &lt;prod&gt; *bob *Rasmus
pushbot: bob Rasmus : everyone is ready, checking on Jenkins...
Jenkins: prod: last build: 39452 (1 min 39 sec ago): SUCCESS: http://ci/job/prod/39452/
bob: .done
pushbot: clear
*** pushbot has changed the topic on #push to clear</code></pre>
</section>
<section id="etsy_deploy6">
<p class="p" style="font-size:2.5em;text-align:left;">Graph Everything!</p>
<ul>
<li style="font-size: 2em;">Statsd</li>
<li style="font-size: 2em;">Ganglia</li>
<li style="font-size: 2em;">Graphite</li>
</ul>
</section>
<section id="etsy_deploy7">
<p class="p" style="font-size:2.5em;text-align:left;">Log Everything!</p>
<ul>
<li style="font-size: 2em;">logster</li>
<li style="font-size: 2em;">Supergrep</li>
<li style="font-size: 2em;">Logstash</li>
<li style="font-size: 2em;">Elastic Search</li>
</ul>
</section>
<section id="etsy_deploy8">
<ul>
<li style="font-size: 1.5em;">Commit to master</li>
<li style="font-size: 1.5em;">Deploy from HEAD</li>
<li style="font-size: 1.5em;">Branches?</li>
<li style="font-size: 1.5em;">Branches are in code via feature flags</li>
</ul>
</section>
<section id="etsy_deploy9">
<p class="p" style="font-size:2.5em;text-align:left;">Blameless post-mortems</p>
</section>
<section id="etsy_deploy10">
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/etsy/deployinator" target="">github.com/etsy/deployinator</a></div>
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/etsy/statsd" target="">github.com/etsy/statsd</a></div>
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/etsy/logster" target="">github.com/etsy/logster</a></div>
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/etsy/morgue" target="">github.com/etsy/morgue</a></div>
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/etsy/feature" target="">github.com/etsy/feature</a></div>
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/etsy/supergrep" target="">github.com/etsy/supergrep</a></div>
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/etsy/PushBot" target="">github.com/etsy/PushBot</a></div>
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/etsy/TryLib" target="">github.com/etsy/TryLib</a></div>
</section> </section>
<section>
<section id="prod_perc95">
<h2 margin-bottom="2em">PHP 7 in production</h2><br>
<img src="/presentations/slides/intro/perc95.png" align="center" width="882" height="465">
</section>
<section id="prod_cpu">
<img src="/presentations/slides/intro/cpu.png" align="center" width="882" height="465">
</section>
<section id="prod_mem">
<img src="/presentations/slides/intro/mem.png" align="center" width="882" height="465">
</section> </section>
<section>
<section id="php7_tune_opcache">
<h2 margin-bottom="2em">PHP 7 Tuning</h2><br>
<p class="p" style="font-size:2em;">Opcache</p>
<pre><code class="ini" data-trim style="font-size:1.1em;">opcache.memory_consumption=2048
opcache.max_accelerated_files=100000
opcache.validate_timestamps=1
opcache.revalidate_freq=2
opcache.save_comments=0
opcache.enable_file_override=0
opcache.enable_cli=0
opcache.max_wasted_percentage=10
opcache.interned_strings_buffer=128
opcache.fast_shutdown=1
opcache.huge_code_pages=1
opcache.optimization_level=0x7FFFBFFF</code></pre>
</section>
<section id="php7_tune_huge">
<p class="p" style="font-size:2em;">Huge Pages</p>
<pre><code class="shell nohighlight" data-trim style="font-size:1.2em;">$ sysctl -w vm.nr_hugepages=512
vm.nr_hugepages = 512
(Add it to your /etc/sysctl.conf)
$ grep Huge /proc/meminfo
AnonHugePages: 6144 kB
HugePages_Total: 512
HugePages_Free: 300
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB</code></pre>
</section>
<section id="php7_tune_realpath">
<p class="p" style="font-size:2em;">increase realpath_cache_size</p>
<pre><code class="ini" data-trim style="font-size:2em;">realpath_cache_size=128k</code></pre>
</section>
<section id="php7_tune_mysql">
<p class="p" style="font-size:2em;">If using MySQL, use mysqlnd</p>
<img src="/presentations/slides/intro/mysqli.png" align="center" width="958" height="167">
<img src="/presentations/slides/intro/pdo.png" align="center" width="952" height="95">
<p class="p" style="font-size:1em;">Check your command buffer usage</p>
<img src="/presentations/slides/intro/mysqlnd.png" align="center" width="947" height="140">
</section>
<section id="php7_tune_tmpfs">
<p class="p" style="font-size:2em;">DocumentRoot on tmpfs</p>
<pre><code class="shell nohighlight" data-trim style="font-size:1em;">$ mount | grep tmpfs
tmpfs on /var/www type tmpfs (rw,relatime,size=12288000k,mode=755)
$ ls -la /var/www
total 5
drwxr-xr-x 5 root root 160 Feb 23 02:47 .
drwxr-xr-x 26 root root 4096 Feb 7 19:40 ..
lrwxrwxrwx 1 root root 14 Feb 23 02:47 current -&gt; /var/www/A
drwxrwxr-x 25 apache apache 640 Feb 11 22:04 A
drwxrwxr-x 25 apache apache 640 Feb 11 22:04 B</code></pre>
</section>
<section id="php7_tune_app">
<p class="p" style="font-size:2em;">Application-level changes?</p>
<p class="example">Remember this?</p>
<pre><code data-trim style="font-size:1.1em;">$a = [];
for($i=0; $i &lt; 100000;$i++) {
$a[] = ['abc','def','ghi','jkl','mno','pqr'];
}
echo memory_get_usage(true);
// PHP 5.x 109M
// PHP 7.0 42M no opcache
// PHP 7.0 6M with opcache enabled</code></pre>
<p class="example">Use it!</p>
<pre><code data-trim style="font-size:1.1em;">include 'config.php'; // $config = [ ... ]</code></pre>
<pre><code data-trim style="font-size:1.1em;">include 'countries.php'; // $countries = [ 'CA'=&gt;'Canada', ... ]</code></pre>
</section> </section>
<section>
<section id="numa">
<h2 margin-bottom="2em">Hyperthreading and NUMA</h2><br>
<ul>
<li style="font-size: 1em;list-style-type: circle;">HyperThreading handles extreme loads better</li>
<li style="font-size: 1em;list-style-type: circle;">If you don't have multi-socket servers, turn on HT and move on</li>
<li style="font-size: 1em;list-style-type: circle;">For multi-socket servers, things get interesting</li>
</ul>
</section>
<section id="numa_singlesocket">
<p class="example">Digital Ocean</p>
<pre><code class="shell nohighlight" data-trim style="font-size:1em;">$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 2
On-line CPU(s) list: 0,1
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 2
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 63
Model name: Intel(R) Xeon(R) CPU E5-2650L v3 @ 1.80GHz
Stepping: 2
CPU MHz: 1797.917
BogoMIPS: 3595.83
Virtualization: VT-x
Hypervisor vendor: KVM
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 30720K
NUMA node0 CPU(s): 0,1</code></pre>
</section>
<section id="numa_multisocket">
<p class="example">Multi-socket bare metal without HT</p>
<pre><code class="shell nohighlight" data-trim style="font-size:1em;">$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 24
On-line CPU(s) list: 0-23
Thread(s) per core: 1
Core(s) per socket: 12
Socket(s): 2
NUMA node(s): 2
Vendor ID: GenuineIntel
CPU family: 6
Model: 63
Model name: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
Stepping: 2
CPU MHz: 1203.320
BogoMIPS: 5005.24
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 30720K
NUMA node0 CPU(s): 0-11
NUMA node1 CPU(s): 12-23</code></pre>
</section>
<section id="numa_multisocket_ht">
<p class="example">Multi-socket bare metal with HT</p>
<pre><code class="shell nohighlight" data-trim style="font-size:1em;">$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 48
On-line CPU(s) list: 0-47
Thread(s) per core: 2
Core(s) per socket: 12
Socket(s): 2
NUMA node(s): 2
Vendor ID: GenuineIntel
CPU family: 6
Model: 63
Model name: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
Stepping: 2
CPU MHz: 1200.000
BogoMIPS: 5004.73
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 30720K
NUMA node0 CPU(s): 0-11,24-35
NUMA node1 CPU(s): 12-23,36-47</code></pre>
</section>
<section id="htop_graphs">
<img src="/presentations/slides/intro/htop_ht.png" align="center" width="800" height="325">
<img src="/presentations/slides/intro/htop.png" align="center" width="979" height="229">
</section>
<section id="numa_graph">
<img src="/presentations/slides/intro/numa_ht.png" align="center" width="979" height="507">
</section>
<section id="numa_solutions">
<br/>
<h4 class="p">Solutions?</h4>
<ul>
<li style="font-size: 1em;list-style-type: circle;">numactl --interleave=all httpd/php-fpm</li>
<li style="font-size: 1em;list-style-type: circle;">split multi-socket with containers</li>
<li style="font-size: 1em;list-style-type: circle;">BIOS Snoop Mode setting? HS/ES/COD?</li>
<li style="font-size: 1em;list-style-type: circle;">ignore it</li>
</ul>
</section> </section>
<section>
<section id="driveshaft">
<h2 style="text-align:center;">Using Gearman?</h2>
<h2 style="text-align:center;">Check out Driveshaft!</h2>
<div align="center" style="font-size: 1.2em; color: ; text-align: center; margin-left: ; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/keyurdg/driveshaft" target="">github.com/keyurdg/driveshaft</a></div>
</section>
<section id="driveshaft1">
<ul>
<li style="font-size: 1.5em;">Manages pools of workers</li>
<li style="font-size: 1.5em;">Registers jobs with Gearmand for each pool</li>
<li style="font-size: 1.5em;">Jobs are run by hitting an endpoint over HTTP/S</li>
</ul>
</section>
<section id="driveshaft2">
<pre><code class="json" data-trim style="font-size:1.1em;">{
&quot;gearman_servers_list&quot;:
[
&quot;localhost&quot;
],
&quot;pools_list&quot;:
{
&quot;ShopStats&quot;:
{
&quot;job_processing_uri&quot;: &quot;http://localhost/job.php&quot;,
&quot;worker_count&quot;: 20,
&quot;jobs_list&quot;:
[
&quot;ShopStats&quot;
]
},
&quot;Newsfeed&quot;:
{
&quot;job_processing_uri&quot;: &quot;http://localhost/job.php&quot;,
&quot;worker_count&quot;: 10,
&quot;jobs_list&quot;:
[
&quot;Newsfeed&quot;
]
},
&quot;Regular&quot;:
{
&quot;job_processing_uri&quot;: &quot;http://localhost/job.php&quot;,
&quot;worker_count&quot;: 5,
&quot;jobs_list&quot;:
[
&quot;Sum3&quot;,
&quot;Sum&quot;,
&quot;Sum2&quot;
]
}
}
}</code></pre>
</section> </section>
<section>
<section id="thank_you">
<h2 style="text-align:center;">Thank You</h2>
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/rlerdorf/php7dev" target="">https://github.com/rlerdorf/php7dev</a></div>
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/rlerdorf/phan" target="">https://github.com/rlerdorf/phan</a></div>
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://bugs.php.net" target="">https://bugs.php.net</a></div>
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href=":-:url:-:" target="">http://talks.php.net/confoo16a</a></div>
<br/>
<br/>
<br/>
<p class="p" style="font-size:1.1em;">Report Bugs</p>
<p class="p" style="font-size:1.1em;">Useful bug reports, please!</p>
</section> </section>
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