perf is a performance analyzing tool in Linux, available from Linux kernel version 2.6.31 under tools/perf, and is frequently updated and enhanced. It is capable of lightweight profiling, supports hardware performance counters, tracepoints, software performance counters (e.g. hrtimer), and dynamic probes (for example, kprobes or uprobes).
The output from perf can be used to generate flame graphs.
perf is sometimes referred to as "Performance Counters for Linux (PCL)," "Linux perf events (LPE)," "perf_events," or "Perf Tools."
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DTrace is a performance analysis and troubleshooting tool for Solaris, Mac OS X and FreeBSD.
ktap is a script-based dynamic tracing tool for Linux. It uses a scripting language and lets users trace the Linux kernel dynamically. ktap is designed to give...
SystemTap provides instrumentation for a live running kernel and user-space applications.
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