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Performance analysis tools based on Linux perf_events (aka perf) and ftrace
BPF Compiler Collection
Vector is an on-host performance monitoring framework which exposes hand picked high resolution metrics to every engineer’s browser.
Stack trace visualizer
Processor PMC sample skid testing
Heat map generation tools
Performance Tools using Linux eBPF
PMC (Performance Monitoring Counter) tools for the cloud
Dynamic Tracing in Linux
An any-snarf program that processes application protocols (HTTP/FTP/...) from tcpdump or snoop files and stores session and file data
Node.js C++ lldb plugin
scripts using eBPF
A java agent to generate method mappings to use with the linux `perf` tool
A d3.js library to produce flame graphs.
Performance analysis labs
Project for testing web-service implementations.
SystemTap Lightweight Tools
a system exploration and troubleshooting tool
Performance Scalability Models
DTrace tools for FreeBSD
MSR Cloud Tools
Scripts from "DTrace: Dynamic Tracing in Oracle Solaris, Mac OS X, and FreeBSD", by Brendan Gregg and Jim Mauro, Prentice Hall, 2011.
Catalog of valuable metrics you might want to collect
Some DTrace tools written for the SmartOS/SmartDataCenter cloud (illumos-based)
Visualize file data as a PNG
Guessing game written in many programming languages