<p>Any suggestions for tools to monitor page load times/errors and other performance metrics for a PHP application?</p>

<p>I am aware of the FireBug and YSlow tools, but this is for more server monitoring.</p>

[{'answer_id': 69478, 'author': 'Yann Ramin', 'author_id': 9167, 'author_profile': 'https://Stackoverflow.com/users/9167', 'pm_score': 2, 'selected': False, 'text': '<p>There is the classic \'ab\' (apachebench) program. More power comes from <a href="http://jakarta.apache.org/jmeter/" rel="nofollow noreferrer">JMmeter</a>. For server health, I recommend Munin, which can painlessly capture data from several systems and aggregate it on one page. </p>\n'}, {'answer_id': 69543, 'author': 'Ryan Doherty', 'author_id': 956, 'author_profile': 'https://Stackoverflow.com/users/956', 'pm_score': 1, 'selected': False, 'text': '<p>Try <a href="http://www.nagios.org/" rel="nofollow noreferrer">Nagios</a>, it\'s the default tool to monitor servers. You can write plugins to report just about any data. </p>\n'}, {'answer_id': 70334, 'author': 'Kristian J.', 'author_id': 4588, 'author_profile': 'https://Stackoverflow.com/users/4588', 'pm_score': 1, 'selected': False, 'text': '<p>For profiling your code, there\'s <a href="http://xdebug.org/docs/profiler" rel="nofollow noreferrer">Xdebug</a>. Doing regression testing with <a href="http://www.joedog.org/JoeDog/Siege" rel="nofollow noreferrer">Siege</a> can also be quite useful.</p>\n'}, {'answer_id': 71136, 'author': 'Community', 'author_id': -1, 'author_profile': 'https://Stackoverflow.com/users/-1', 'pm_score': 1, 'selected': False, 'text': '<p>You can also try <a href="http://www.hpl.hp.com/research/linux/httperf/" rel="nofollow noreferrer">httperf</a>. It\'s a very flexible tool and if you want to test how your application and webserver can deal with various traffic loads you should definitely give it a go.</p>\n'}]
['https://Stackoverflow.com/questions/69459', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/-1/']