LIBPFM(3)

💖 NAME 💖

okay bestie, welcome to LIBPFM(3) from the Linux Programmer's Manual 💅 this page is all about libpfm_intel_bdx_unc_r3qpi — support for the Intel Broadwell Server R3QPI uncore PMU. it's giving very specific, very powerful, very cunty hardware energy ✨

🌸 SYNOPSIS 🌸

#include <perfmon/pfmlib.h>

PMU name: bdx_unc_r3qpi[0-2]

PMU desc: Intel Broadwell server R3QPI uncore PMU

🦋 DESCRIPTION 🦋

the library supports the Intel Broadwell server R3QPI uncore PMU. no cap. this PMU model only exists on various Broadwell server models (79, 86) — so if you're not on one of those, it's not your moment, bestie 😭

👑 MODIFIERS 👑

the following modifiers are supported on Intel Broadwell server R3PQI uncore PMU:

• e — enables edge detection, i.e., count only when there is a state transition from no occurrence of the event to at least one occurrence. this modifier must be combined with a threshold modifier (t) with a value greater or equal to one. it's a boolean modifier, periodt ✨
• t — sets the threshold value. when set to a non-zero value, the counter counts the number of R3QPI cycles in which the number of occurrences of the event is greater or equal to the threshold. it's an integer modifier with values in the range [0:15]. slay 🎀
• i — inverts the meaning of the threshold or edge filter. if set, the event counts when strictly less than N occurrences occur per cycle if threshold is set to N. when invert is set, then threshold must be set to non-zero value. if set, the event counts when the event transitions from occurring to not occurring (falling edge) when edge detection is set. it's a boolean modifier 💜

💜 AUTHORS 💜

Stephane Eranian <eranian@gmail.com>

mwah 💋 this was the June, 2017 edition of LIBPFM(3) from the Linux Programmer's Manual. bye bestie, go count something iconic 🫶✨