FlameGraph

Stack trace visualizer

perf-tools

Performance analysis tools based on Linux perf_events (aka perf) and ftrace

bpf-perf-tools-book

Official repository for the BPF Performance Tools book

HeatMap

Heat map generation tools

pmc-cloud-tools

PMC (Performance Monitoring Counter) tools for the cloud

Chaosreader

An any-snarf program that processes application protocols (HTTP/FTP/...) from tcpdump or snoop files and stores session and file data

wss

Working Set Size tools

dtrace-cloud-tools

Some DTrace tools written for the SmartOS/SmartDataCenter cloud (illumos-based)

bpf-perf-workshop

systemtap-lwtools

SystemTap Lightweight Tools

msr-cloud-tools

MSR Cloud Tools

DTrace-book-scripts

Scripts from "DTrace: Dynamic Tracing in Oracle Solaris, Mac OS X, and FreeBSD", by Brendan Gregg and Jim Mauro, Prentice Hall, 2011.