We’re excited to release FlameScope: a new performance visualization tool for analyzing variance, perturbations, single-threaded execution, application startup, and other time-based issues.
FlameScope was developed by Martin Spier and Brendan Gregg, Netflix cloud performance engineering team. Blog post by Brendan Gregg.
火焰圖 (flame graph) 就是這個：
其實是每秒切一次 offset 做出來的圖：
就可以很簡單的看出來哪些區塊以及 pattern 是熱點：