PmcHardware [FreeBSD WIKI]

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====== Pmctools: PMC Hardware ======

This wiki page will describe PMC hardware supported by hwpmc(4).  This page is currently a stub.

===== Classification Scheme =====
(To be filled in)
  * Per-CPU counters.
  * Chipset (i.e., motherboard) counters.
  * Shared counters (Intel P4-only)

Dependent/Independent counters, examples of these.

===== Supported PMCs =====
(to be described in more detail)
  * AMD Athlon XP
  * AMD Athlon64 and Opteron
  * Intel Pentium Pro, P-II, P-III, Celeron, Pentium-M.
  * Intel P4/HTT
  * [[PmcTools/PmcHardwareIntelCore|Intel Core/Core 2/Atom CPUs]]
  * Intel XScale (ARMv5TE)

===== New hardware support in the pipeline =====

Current head of the queue:
  * Intel Pentium CPUs

Perhaps later:

  * Sparc US-II PMCs
  * [[PmcTools/PmcHardwarePowerPcG4|PowerPC G4]]

A brief "howto" on writing a new hardware support layer is available
at [[PmcTools/PmcHardwareHowTo|PmcTools/PmcHardwareHowTo]].

===== Stuff I'd like to support =====

... but for which I need access to hardware.
  * Sparc T-1 PMCs.  At a first glance, T-1's support needs hwpmc(4) like functionality in the //hypervisor//.
  * VIA CPU PMCs (if these CPUs have PMCs in them).