<p dir="auto">Hi,</p>
<p dir="auto">After our latest vendor upgrade we have experienced a very long execution time on our CI server. After digging into it I found the following:</p>
<p dir="auto">Symfony 2.6.5, Win 7 x64, dev mode:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="Total time  755 ms
Initialization time     480 ms"><pre class="notranslate"><code class="notranslate">Total time  755 ms
Initialization time     480 ms
</code></pre></div>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="composer update symfony/symfony

//...

- Removing symfony/symfony (v2.6.5)
- Installing symfony/symfony (v2.6.8)"><pre class="notranslate"><code class="notranslate">composer update symfony/symfony

//...

- Removing symfony/symfony (v2.6.5)
- Installing symfony/symfony (v2.6.8)
</code></pre></div>
<p dir="auto">(no other vendors were updated)</p>
<p dir="auto">Symfony 2.6.8, Win 7 x64, dev mode:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="Total time     9622 ms
Initialization time     9405 ms"><pre class="notranslate"><code class="notranslate">Total time     9622 ms
Initialization time     9405 ms
</code></pre></div>
<ul dir="auto">
<li>problem present on linux as well</li>
<li>php error log empty</li>
<li>dev log seems normal</li>
<li>prod mode is unaffected</li>
</ul>
<p dir="auto">Any help would be much appreciated.</p>
<p dir="auto">On Previous versions of symfony (lower than 2.6.8) the response time of a page was about 800 ms in dev environment. With the upgrade in 2.6.8 the response time was more than 4s with high usage of CPU. In production environment, I didn't notice any response time change between 2.6.7 and 2.6.8.<br>
The timeline of the toolbar shows an Initialization time from 300ms for 2.6.7 to 3800ms for 2.6.8.<br>
Environment :<br>
Linux Ubuntu 15.04<br>
PHP 5.5.9</p>