If you profile your applications, symfonys builtin profiler, the web debug bar and the xhprof bundle provide a lot of service to introspect your application. But what happens if you can't optimize your php code anymore? If there is no clear bottleneck inside the database or in the php code? If the system only slows down under certain, "phase of the moon" circumstances? This talk shows profiling solutions beyond sql-logs, xdebug and xhprof. It demonstrates how to get an overview of everything that happens inside your webserver or database nodes. Tools like cachegrind, callgrind, sysprof, mytop and perf are shown.
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