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perf

Linux kernel's performance analysis subsystem and userspace tool.

perf (the perf tool, distributed as part of the kernel source tree as linux-tools) is the canonical interface to the kernel's perf_events subsystem. It samples CPU performance counters, records kernel and user stack traces, and produces flame graphs and per-symbol profiles. It is the standard tool for low-level performance analysis on Linux.

Because it is part of the kernel project, perf is updated in lockstep with the kernel and supports every CPU feature exposed by the running kernel.

Debian/Ubuntu: sudo apt install linux-tools-common linux-tools-$(uname -r)
Fedora:        sudo dnf install perf
Arch:          sudo pacman -S perf