Blackfire Profiler


Blackfire Profiler is a tool that instruments PHP applications to gather data about consumed server resources like memory, CPU time, and I/O operations. Blackfire is also a SaaS service to visualize any callgrind-compatible profile.
Its architecture is based on a Probe, which is a PHP extension that gathers the raw performance profiles and an Agent, which is a server-side daemon that aggregates and forwards profiles to blackfire.io servers to visualize them.
Blackfire has been used by some popular PHP projects such as ownCloud, Drupal, Symfony and Laravel to improve their performance and to spot performance bottlenecks.
Blackfire is actively developed.

Features