So I'm looking to put together a suite of tools put together some metrics of page load performance for my company's sites. I already know about:<p>* www.webpagetest.org
* www.yottaa.com
* Google analytics has some meaningful stuff
* Internal tools for back-end performance (number/time of database hits, etc)<p>What other tools should I be looking at to gather a comprehensive set of metrics?
We use NewRelic to see everything from the bottom up:
<a href="http://newrelic.com/" rel="nofollow">http://newrelic.com/</a><p>It's really easy to use, comprehensive and they have a 14day trial.<p>I also like yslow:
<a href="http://developer.yahoo.com/yslow/" rel="nofollow">http://developer.yahoo.com/yslow/</a><p>It's good for quick checks.
I've been working on a tool for doing simultaneous page-load measurements and back-end profiling. Here's a paper my supervisor and I published on it: <a href="http://portal.acm.org.cyber.usask.ca/citation.cfm?id=1958746.1958783&coll=DL&dl=ACM&CFID=36607375&CFTOKEN=97842304" rel="nofollow">http://portal.acm.org.cyber.usask.ca/citation.cfm?id=1958746...</a><p>Depending on your environment, we could talk about getting you a copy to try out. It's ... a little rough around the edges, but I've found it quite useful.
I can't speak to it's effectiveness, but I have this site bookmarked to use soon on one of my projects:
<a href="https://www.blamestella.com/" rel="nofollow">https://www.blamestella.com/</a>
I was at a web speed optimization meetup and we used this tool:
<a href="http://www.webpagetest.org/" rel="nofollow">http://www.webpagetest.org/</a><p>It was pretty neat and VERY useful.
We use NewRelic <a href="http://newrelic.com" rel="nofollow">http://newrelic.com</a> and Pingdom <a href="http://pingdom.com" rel="nofollow">http://pingdom.com</a>.