LIBPFM(3)

📦 version 4.13.0+git106-g3e4031b, in debian trixie, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 LIBPFM 💖

okay so bestie, we're in the Linux Programmer's Manual and today's episode is all about libpfm_arm_neoverse_n3 🎀 grab a strawberry, sit down, it's giving very niche but very slay.

✨ NAME ✨

libpfm_arm_neoverse_n3 — support for ARM Neoverse N2 core PMU 🦋

🌸 SYNOPSIS 🌸

#include <perfmon/pfmlib.h>
  • PMU name: arm_n3
  • PMU desc: ARM Neoverse N2

💅 DESCRIPTION 💅

So the library supports the ARM Neoverse N2 core PMU. That's the whole vibe. 🫶

This PMU lowkey supports 6 or 20 64-bit counters and privilege levels filtering. It can operate in both 32 and 64 bit modes. Versatile icon behavior honestly 👑

⭐ MODIFIERS ⭐

The following modifiers are supported on ARM Neoverse N3:

  • u — measure at the user level. This corresponds to PFM_PLM3. This is a boolean modifier. ✨
  • k — measure at the kernel level. This corresponds to PFM_PLM0. This is a boolean modifier. 💜
  • hv — measure at the hypervisor level. This corresponds to PFM_PLMH. This is a boolean modifier. 🔥
not me giving you three whole booleans like little light switches for privilege levels 💀 flip them responsibly bestie.

👑 AUTHORS 👑

Stephane Eranian <eranian@gmail.com> — the main character who wrote this, periodt 🎀

and that's the whole page!! 💖 this lil masterpiece came out in the Linux Programmer's Manual, October, 2024 edition — mwah, no notes, go forth and count your counters 🦋✨🎀

📦 where this page comes from