During DrupalCon Chicago 2011, I mentioned that we collect Xdebug trace files and analyze them to identify performance bottlenecks and other issues in our PHP code. Some of the Xdebug tracing tools we wrote in-house. As promised, we have now released two of our Xdebug tracing tool suites: ValaXdebugTools and XdebugUtils.

Read on for a description of each of these two tools.