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.Dd October 4, 2008
.Dt PMC.P6 3
.Os
.Sh NAME
.Nm pmc.p6
.Nd measurement events for
.Tn Intel
Pentium Pro, P-II, P-III family CPUs
.Sh LIBRARY
.Lb libpmc
.Sh SYNOPSIS
.In pmc.h
.Sh DESCRIPTION
Intel P6 PMCs are present in Intel
.Tn "Pentium Pro" ,
.Tn "Pentium II" ,
.Tn Celeron ,
.Tn "Pentium III"
and
.Tn "Pentium M"
processors.
.Pp
They are documented in
.Rs
.%B "IA-32 Intel(R) Architecture Software Developer's Manual"
.%T "Volume 3: System Programming Guide"
.%N "Order Number 245472-012"
.%D 2003
.%Q "Intel Corporation"
.Re
.Pp
Some of these events are affected by processor errata described in
.Rs
.%B "Intel(R) Pentium(R) III Processor Specification Update"
.%N "Document Number: 244453-054"
.%D "April 2005"
.%Q "Intel Corporation"
.Re
.Ss PMC Features
These CPUs have two counters, each 40 bits wide.
Some events may only be used on specific counters and some events are
defined only on specific processor models.
These PMCs support the following capabilities:
.Bl -column "PMC_CAP_INTERRUPT" "Support"
.It Em Capability Ta Em Support
.It PMC_CAP_CASCADE Ta \&No
.It PMC_CAP_EDGE Ta Yes
.It PMC_CAP_INTERRUPT Ta Yes
.It PMC_CAP_INVERT Ta Yes
.It PMC_CAP_READ Ta Yes
.It PMC_CAP_PRECISE Ta \&No
.It PMC_CAP_SYSTEM Ta Yes
.It PMC_CAP_TAGGING Ta \&No
.It PMC_CAP_THRESHOLD Ta Yes
.It PMC_CAP_USER Ta Yes
.It PMC_CAP_WRITE Ta Yes
.El
.Ss Event Qualifiers
Event specifiers for Intel P6 PMCs can have the following common
qualifiers:
.Bl -tag -width indent
.It Li cmask= Ns Ar value
Configure the PMC to increment only if the number of configured
events measured in a cycle is greater than or equal to
.Ar value .
.It Li edge
Configure the PMC to count the number of de-asserted to asserted
transitions of the conditions expressed by the other qualifiers.
If specified, the counter will increment only once whenever a
condition becomes true, irrespective of the number of clocks during
which the condition remains true.
.It Li inv
Invert the sense of comparison when the
.Dq Li cmask
qualifier is present, making the counter increment when the number of
events per cycle is less than the value specified by the
.Dq Li cmask
qualifier.
.It Li os
Configure the PMC to count events happening at processor privilege
level 0.
.It Li umask= Ns Ar value
This qualifier is used to further qualify the event selected (see
below).
.It Li usr
Configure the PMC to count events occurring at privilege levels 1, 2
or 3.
.El
.Pp
If neither of the
.Dq Li os
or
.Dq Li usr
qualifiers are specified, the default is to enable both.
.Pp
The event specifiers supported by Intel P6 PMCs are:
.Bl -tag -width indent
.It Li p6-baclears
.Pq Event E6H
Count the number of times a static branch prediction was made by the
branch decoder because the BTB did not have a prediction.
.It Li p6-br-bac-missp-exec
.Pq Event 8AH , Tn "Pentium M"
Count the number of branch instructions executed that where
mispredicted at the Front End (BAC).
.It Li p6-br-bogus
.Pq Event E4H
Count the number of bogus branches.
.It Li p6-br-call-exec
.Pq Event 92H , Tn "Pentium M"
Count the number of call instructions executed.
.It Li p6-br-call-missp-exec
.Pq Event 93H , Tn "Pentium M"
Count the number of call instructions executed that were mispredicted.
.It Li p6-br-cnd-exec
.Pq Event 8BH , Tn "Pentium M"
Count the number of conditional branch instructions executed.
.It Li p6-br-cnd-missp-exec
.Pq Event 8CH , Tn "Pentium M"
Count the number of conditional branch instructions executed that were
mispredicted.
.It Li p6-br-ind-call-exec
.Pq Event 94H , Tn "Pentium M"
Count the number of indirect call instructions executed.
.It Li p6-br-ind-exec
.Pq Event 8DH , Tn "Pentium M"
Count the number of indirect branch instructions executed.
.It Li p6-br-ind-missp-exec
.Pq Event 8EH , Tn "Pentium M"
Count the number of indirect branch instructions executed that were
mispredicted.
.It Li p6-br-inst-decoded
.Pq Event E0H
Count the number of branch instructions decoded.
.It Li p6-br-inst-exec
.Pq Event 88H , Tn "Pentium M"
Count the number of branch instructions executed but necessarily retired.
.It Li p6-br-inst-retired
.Pq Event C4H
Count the number of branch instructions retired.
.It Li p6-br-miss-pred-retired
.Pq Event C5H
Count the number of mispredicted branch instructions retired.
.It Li p6-br-miss-pred-taken-ret
.Pq Event C9H
Count the number of taken mispredicted branches retired.
.It Li p6-br-missp-exec
.Pq Event 89H , Tn "Pentium M"
Count the number of branch instructions executed that were
mispredicted at execution.
.It Li p6-br-ret-bac-missp-exec
.Pq Event 91H , Tn "Pentium M"
Count the number of return instructions executed that were
mispredicted at the Front End (BAC).
.It Li p6-br-ret-exec
.Pq Event 8FH , Tn "Pentium M"
Count the number of return instructions executed.
.It Li p6-br-ret-missp-exec
.Pq Event 90H , Tn "Pentium M"
Count the number of return instructions executed that were
mispredicted at execution.
.It Li p6-br-taken-retired
.Pq Event C9H
Count the number of taken branches retired.
.It Li p6-btb-misses
.Pq Event E2H
Count the number of branches for which the BTB did not produce a
prediction.
.It Li p6-bus-bnr-drv
.Pq Event 61H
Count the number of bus clock cycles during which this processor is
driving the BNR# pin.
.It Li p6-bus-data-rcv
.Pq Event 64H
Count the number of bus clock cycles during which this processor is
receiving data.
.It Li p6-bus-drdy-clocks Op Li ,umask= Ns Ar qualifier
.Pq Event 62H
Count the number of clocks during which DRDY# is asserted.
An additional qualifier may be specified, and comprises one of the
following keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-bus-hit-drv
.Pq Event 7AH
Count the number of bus clock cycles during which this processor is
driving the HIT# pin.
.It Li p6-bus-hitm-drv
.Pq Event 7BH
Count the number of bus clock cycles during which this processor is
driving the HITM# pin.
.It Li p6-bus-lock-clocks Op Li ,umask= Ns Ar qualifier
.Pq Event 63H
Count the number of clocks during with LOCK# is asserted on the
external system bus.
An additional qualifier may be specified and comprises one of the following
keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-bus-req-outstanding
.Pq Event 60H
Count the number of bus requests outstanding in any given cycle.
.It Li p6-bus-snoop-stall
.Pq Event 7EH
Count the number of clock cycles during which the bus is snoop stalled.
.It Li p6-bus-tran-any Op Li ,umask= Ns Ar qualifier
.Pq Event 70H
Count the number of completed bus transactions of any kind.
An additional qualifier may be specified and comprises one of the following
keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-bus-tran-brd Op Li ,umask= Ns Ar qualifier
.Pq Event 65H
Count the number of burst read transactions.
An additional qualifier may be specified and comprises one of the following
keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-bus-tran-burst Op Li ,umask= Ns Ar qualifier
.Pq Event 6EH
Count the number of completed burst transactions.
An additional qualifier may be specified and comprises one of the following
keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-bus-tran-def Op Li ,umask= Ns Ar qualifier
.Pq Event 6DH
Count the number of completed deferred transactions.
An additional qualifier may be specified and comprises one of the following
keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-bus-tran-ifetch Op Li ,umask= Ns Ar qualifier
.Pq Event 68H
Count the number of completed instruction fetch transactions.
An additional qualifier may be specified and comprises one of the following
keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-bus-tran-inval Op Li ,umask= Ns Ar qualifier
.Pq Event 69H
Count the number of completed invalidate transactions.
An additional qualifier may be specified and comprises one of the following
keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-bus-tran-mem Op Li ,umask= Ns Ar qualifier
.Pq Event 6FH
Count the number of completed memory transactions.
An additional qualifier may be specified and comprises one of the following
keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-bus-tran-pwr Op Li ,umask= Ns Ar qualifier
.Pq Event 6AH
Count the number of completed partial write transactions.
An additional qualifier may be specified and comprises one of the following
keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-bus-tran-rfo Op Li ,umask= Ns Ar qualifier
.Pq Event 66H
Count the number of completed read-for-ownership transactions.
An additional qualifier may be specified and comprises one of the following
keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-bus-trans-io Op Li ,umask= Ns Ar qualifier
.Pq Event 6CH
Count the number of completed I/O transactions.
An additional qualifier may be specified and comprises one of the following
keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-bus-trans-p Op Li ,umask= Ns Ar qualifier
.Pq Event 6BH
Count the number of completed partial transactions.
An additional qualifier may be specified and comprises one of the following
keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-bus-trans-wb Op Li ,umask= Ns Ar qualifier
.Pq Event 67H
Count the number of completed write-back transactions.
An additional qualifier may be specified and comprises one of the following
keywords:
.Pp
.Bl -tag -width indent -compact
.It Li any
Count transactions generated by any agent on the bus.
.It Li self
Count transactions generated by this processor.
.El
.Pp
The default is to count operations generated by this processor.
.It Li p6-cpu-clk-unhalted
.Pq Event 79H
Count the number of cycles during with the processor was not halted.
.Pp
.Pq Tn "Pentium M"
Count the number of cycles during with the processor was not halted
and not in a thermal trip.
.It Li p6-cycles-div-busy
.Pq Event 14H
Count the number of cycles during which the divider is busy and cannot
accept new divides.
This event is only allocated on counter 0.
.It Li p6-cycles-int-pending-and-masked
.Pq Event C7H
Count the number of processor cycles for which interrupts were
disabled and interrupts were pending.
.It Li p6-cycles-int-masked
.Pq Event C6H
Count the number of processor cycles for which interrupts were
disabled.
.It Li p6-data-mem-refs
.Pq Event 43H
Count all loads and all stores using any memory type, including
internal retries.
Each part of a split store is counted separately.
.It Li p6-dcu-lines-in
.Pq Event 45H
Count the total lines allocated in the data cache unit.
.It Li p6-dcu-m-lines-in
.Pq Event 46H
Count the number of M state lines allocated in the data cache unit.
.It Li p6-dcu-m-lines-out
.Pq Event 47H
Count the number of M state lines evicted from the data cache unit.
.It Li p6-dcu-miss-outstanding
.Pq Event 48H
Count the weighted number of cycles while a data cache unit miss is
outstanding, incremented by the number of outstanding cache misses at
any time.
.It Li p6-div
.Pq Event 13H
Count the number of integer and floating-point divides including
speculative divides.
This event is only allocated on counter 1.
.It Li p6-emon-esp-uops
.Pq Event D7H , Tn "Pentium M"
Count the total number of micro-ops.
.It Li p6-emon-est-trans Op Li ,umask= Ns Ar qualifier
.Pq Event 58H , Tn "Pentium M"
Count the number of
.Tn "Enhanced Intel SpeedStep"
transitions.
An additional qualifier may be specified, and can be one of the
following keywords:
.Pp
.Bl -tag -width indent -compact
.It Li all
Count all transitions.
.It Li freq
Count only frequency transitions.
.El
.Pp
The default is to count all transitions.
.It Li p6-emon-fused-uops-ret Op Li ,umask= Ns Ar qualifier
.Pq Event DAH , Tn "Pentium M"
Count the number of retired fused micro-ops.
An additional qualifier may be specified, and may be one of the
following keywords:
.Pp
.Bl -tag -width indent -compact
.It Li all
Count all fused micro-ops.
.It Li loadop
Count only load and op micro-ops.
.It Li stdsta
Count only STD/STA micro-ops.
.El
.Pp
The default is to count all fused micro-ops.
.It Li p6-emon-kni-comp-inst-ret
.Pq Event D9H , Tn "Pentium III"
Count the number of SSE computational instructions retired.
An additional qualifier may be specified, and comprises one of the
following keywords:
.Pp
.Bl -tag -width indent -compact
.It Li packed-and-scalar
Count packed and scalar operations.
.It Li scalar
Count scalar operations only.
.El
.Pp
The default is to count packed and scalar operations.
.It Li p6-emon-kni-inst-retired Op Li ,umask= Ns Ar qualifier
.Pq Event D8H , Tn "Pentium III"
Count the number of SSE instructions retired.
An additional qualifier may be specified, and comprises one of the
following keywords:
.Pp
.Bl -tag -width indent -compact
.It Li packed-and-scalar
Count packed and scalar operations.
.It Li scalar
Count scalar operations only.
.El
.Pp
The default is to count packed and scalar operations.
.It Li p6-emon-kni-pref-dispatched Op Li ,umask= Ns Ar qualifier
.Pq Event 07H , Tn "Pentium III"
Count the number of SSE prefetch or weakly ordered instructions
dispatched (including speculative prefetches).
An additional qualifier may be specified, and comprises one of the
following keywords:
.Pp
.Bl -tag -width indent -compact
.It Li nta
Count non-temporal prefetches.
.It Li t1
Count prefetches to L1.
.It Li t2
Count prefetches to L2.
.It Li wos
Count weakly ordered stores.
.El
.Pp
The default is to count non-temporal prefetches.
.It Li p6-emon-kni-pref-miss Op Li ,umask= Ns Ar qualifier
.Pq Event 4BH , Tn "Pentium III"
Count the number of prefetch or weakly ordered instructions that miss
all caches.
An additional qualifier may be specified, and comprises one of the
following keywords:
.Pp
.Bl -tag -width indent -compact
.It Li nta
Count non-temporal prefetches.
.It Li t1
Count prefetches to L1.
.It Li t2
Count prefetches to L2.
.It Li wos
Count weakly ordered stores.
.El
.Pp
The default is to count non-temporal prefetches.
.It Li p6-emon-pref-rqsts-dn
.Pq Event F8H , Tn "Pentium M"
Count the number of downward prefetches issued.
.It Li p6-emon-pref-rqsts-up
.Pq Event F0H , Tn "Pentium M"
Count the number of upward prefetches issued.
.It Li p6-emon-simd-instr-retired
.Pq Event CEH , Tn "Pentium M"
Count the number of retired
.Tn MMX
instructions.
.It Li p6-emon-sse-sse2-comp-inst-retired Op Li ,umask= Ns Ar qualifier
.Pq Event D9H , Tn "Pentium M"
Count the number of computational SSE instructions retired.
An additional qualifier may be specified and can be one of the
following keywords:
.Pp
.Bl -tag -width indent -compact
.It Li sse-packed-single
Count SSE packed-single instructions.
.It Li sse-scalar-single
Count SSE scalar-single instructions.
.It Li sse2-packed-double
Count SSE2 packed-double instructions.
.It Li sse2-scalar-double
Count SSE2 scalar-double instructions.
.El
.Pp
The default is to count SSE packed-single instructions.
.It Li p6-emon-sse-sse2-inst-retired Op Li ,umask= Ns Ar qualifier
.Pq Event D8H , Tn "Pentium M"
Count the number of SSE instructions retired.
An additional qualifier can be specified, and can be one of the
following keywords:
.Pp
.Bl -tag -width indent -compact
.It Li sse-packed-single
Count SSE packed-single instructions.
.It Li sse-packed-single-scalar-single
Count SSE packed-single and scalar-single instructions.
.It Li sse2-packed-double
Count SSE2 packed-double instructions.
.It Li sse2-scalar-double
Count SSE2 scalar-double instructions.
.El
.Pp
The default is to count SSE packed-single instructions.
.It Li p6-emon-synch-uops
.Pq Event D3H , Tn "Pentium M"
Count the number of sync micro-ops.
.It Li p6-emon-thermal-trip
.Pq Event 59H , Tn "Pentium M"
Count the duration or occurrences of thermal trips.
Use the
.Dq Li edge
qualifier to count occurrences of thermal trips.
.It Li p6-emon-unfusion
.Pq Event DBH , Tn "Pentium M"
Count the number of unfusion events in the reorder buffer.
.It Li p6-flops
.Pq Event C1H
Count the number of computational floating point operations retired.
This event is only allocated on counter 0.
.It Li p6-fp-assist
.Pq Event 11H
Count the number of floating point exceptions handled by microcode.
This event is only allocated on counter 1.
.It Li p6-fp-comps-ops-exe
.Pq Event 10H
Count the number of computation floating point operations executed.
This event is only allocated on counter 0.
.It Li p6-fp-mmx-trans Op Li ,umask= Ns Ar qualifier
.Pq Event CCH , Tn "Pentium II" , Tn "Pentium III"
Count the number of transitions between MMX and floating-point
instructions.
An additional qualifier may be specified, and comprises one of the
following keywords:
.Pp
.Bl -tag -width indent -compact
.It Li mmxtofp
Count transitions from MMX instructions to floating-point instructions.
.It Li fptommx
Count transitions from floating-point instructions to MMX instructions.
.El
.Pp
The default is to count MMX to floating-point transitions.
.It Li p6-hw-int-rx
.Pq Event C8H
Count the number of hardware interrupts received.
.It Li p6-ifu-ifetch
.Pq Event 80H
Count the number of instruction fetches, both cacheable and non-cacheable.
.It Li p6-ifu-ifetch-miss
.Pq Event 81H
Count the number of instruction fetch misses (i.e., those that produce
memory accesses).
.It Li p6-ifu-mem-stall
.Pq Event 86H
Count the number of cycles instruction fetch is stalled for any reason.
.It Li p6-ild-stall
.Pq Event 87H
Count the number of cycles the instruction length decoder is stalled.
.It Li p6-inst-decoded
.Pq Event D0H
Count the number of instructions decoded.
.It Li p6-inst-retired
.Pq Event C0H
Count the number of instructions retired.
.It Li p6-itlb-miss
.Pq Event 85H
Count the number of instruction TLB misses.
.It Li p6-l2-ads
.Pq Event 21H
Count the number of L2 address strobes.
.It Li p6-l2-dbus-busy
.Pq Event 22H
Count the number of cycles during which the L2 cache data bus was busy.
.It Li p6-l2-dbus-busy-rd
.Pq Event 23H
Count the number of cycles during which the L2 cache data bus was busy
transferring read data from L2 to the processor.
.It Li p6-l2-ifetch Op Li ,umask= Ns Ar qualifier
.Pq Event 28H
Count the number of L2 instruction fetches.
An additional qualifier may be specified and comprises a list of the following
keywords separated by
.Ql +
characters:
.Pp
.Bl -tag -width indent -compact
.It Li e
Count operations affecting E (exclusive) state lines.
.It Li i
Count operations affecting I (invalid) state lines.
.It Li m
Count operations affecting M (modified) state lines.
.It Li s
Count operations affecting S (shared) state lines.
.El
.Pp
The default is to count operations affecting all (MESI) state lines.
.It Li p6-l2-ld Op Li ,umask= Ns Ar qualifier
.Pq Event 29H
Count the number of L2 data loads.
An additional qualifier may be specified and comprises a list of the following
keywords separated by
.Ql +
characters:
.Pp
.Bl -tag -width indent -compact
.It Li both
.Pq Tn "Pentium M"
Count both hardware-prefetched lines and non-hardware-prefetched lines.
.It Li e
Count operations affecting E (exclusive) state lines.
.It Li hw
.Pq Tn "Pentium M"
Count hardware-prefetched lines only.
.It Li i
Count operations affecting I (invalid) state lines.
.It Li m
Count operations affecting M (modified) state lines.
.It Li nonhw
.Pq Tn "Pentium M"
Exclude hardware-prefetched lines.
.It Li s
Count operations affecting S (shared) state lines.
.El
.Pp
The default on processors other than
.Tn "Pentium M"
processors is to count operations affecting all (MESI) state lines.
The default on
.Tn "Pentium M"
processors is to count both hardware-prefetched and
non-hardware-prefetch operations on all (MESI) state lines.
.Pq Errata
This event is affected by processor errata E53.
.It Li p6-l2-lines-in Op Li ,umask= Ns Ar qualifier
.Pq Event 24H
Count the number of L2 lines allocated.
An additional qualifier may be specified and comprises a list of the following
keywords separated by
.Ql +
characters:
.Pp
.Bl -tag -width indent -compact
.It Li both
.Pq Tn "Pentium M"
Count both hardware-prefetched lines and non-hardware-prefetched lines.
.It Li e
Count operations affecting E (exclusive) state lines.
.It Li hw
.Pq Tn "Pentium M"
Count hardware-prefetched lines only.
.It Li i
Count operations affecting I (invalid) state lines.
.It Li m
Count operations affecting M (modified) state lines.
.It Li nonhw
.Pq Tn "Pentium M"
Exclude hardware-prefetched lines.
.It Li s
Count operations affecting S (shared) state lines.
.El
.Pp
The default on processors other than
.Tn "Pentium M"
processors is to count operations affecting all (MESI) state lines.
The default on
.Tn "Pentium M"
processors is to count both hardware-prefetched and
non-hardware-prefetch operations on all (MESI) state lines.
.Pq Errata
This event is affected by processor errata E45.
.It Li p6-l2-lines-out Op Li ,umask= Ns Ar qualifier
.Pq Event 26H
Count the number of L2 lines evicted.
An additional qualifier may be specified and comprises a list of the following
keywords separated by
.Ql +
characters:
.Pp
.Bl -tag -width indent -compact
.It Li both
.Pq Tn "Pentium M"
Count both hardware-prefetched lines and non-hardware-prefetched lines.
.It Li e
Count operations affecting E (exclusive) state lines.
.It Li hw
.Pq Tn "Pentium M"
Count hardware-prefetched lines only.
.It Li i
Count operations affecting I (invalid) state lines.
.It Li m
Count operations affecting M (modified) state lines.
.It Li nonhw
.Pq Tn "Pentium M" only
Exclude hardware-prefetched lines.
.It Li s
Count operations affecting S (shared) state lines.
.El
.Pp
The default on processors other than
.Tn "Pentium M"
processors is to count operations affecting all (MESI) state lines.
The default on
.Tn "Pentium M"
processors is to count both hardware-prefetched and
non-hardware-prefetch operations on all (MESI) state lines.
.Pq Errata
This event is affected by processor errata E45.
.It Li p6-l2-m-lines-inm
.Pq Event 25H
Count the number of modified lines allocated in L2 cache.
.It Li p6-l2-m-lines-outm Op Li ,umask= Ns Ar qualifier
.Pq Event 27H
Count the number of L2 M-state lines evicted.
.Pp
.Pq Tn "Pentium M"
On these processors an additional qualifier may be specified and
comprises a list of the following keywords separated by
.Ql +
characters:
.Pp
.Bl -tag -width indent -compact
.It Li both
Count both hardware-prefetched lines and non-hardware-prefetched lines.
.It Li hw
Count hardware-prefetched lines only.
.It Li nonhw
Exclude hardware-prefetched lines.
.El
.Pp
The default is to count both hardware-prefetched and
non-hardware-prefetch operations.
.Pq Errata
This event is affected by processor errata E53.
.It Li p6-l2-rqsts Op Li ,umask= Ns Ar qualifier
.Pq Event 2EH
Count the total number of L2 requests.
An additional qualifier may be specified and comprises a list of the following
keywords separated by
.Ql +
characters:
.Pp
.Bl -tag -width indent -compact
.It Li e
Count operations affecting E (exclusive) state lines.
.It Li i
Count operations affecting I (invalid) state lines.
.It Li m
Count operations affecting M (modified) state lines.
.It Li s
Count operations affecting S (shared) state lines.
.El
.Pp
The default is to count operations affecting all (MESI) state lines.
.It Li p6-l2-st
.Pq Event 2AH
Count the number of L2 data stores.
An additional qualifier may be specified and comprises a list of the following
keywords separated by
.Ql +
characters:
.Pp
.Bl -tag -width indent -compact
.It Li e
Count operations affecting E (exclusive) state lines.
.It Li i
Count operations affecting I (invalid) state lines.
.It Li m
Count operations affecting M (modified) state lines.
.It Li s
Count operations affecting S (shared) state lines.
.El
.Pp
The default is to count operations affecting all (MESI) state lines.
.It Li p6-ld-blocks
.Pq Event 03H
Count the number of load operations delayed due to store buffer blocks.
.It Li p6-misalign-mem-ref
.Pq Event 05H
Count the number of misaligned data memory references (crossing a 64
bit boundary).
.It Li p6-mmx-assist
.Pq Event CDH , Tn "Pentium II" , Tn "Pentium III"
Count the number of MMX assists executed.
.It Li p6-mmx-instr-exec
.Pq Event B0H
.Pq Tn Celeron , Tn "Pentium II"
Count the number of MMX instructions executed, except MOVQ and MOVD
stores from register to memory.
.It Li p6-mmx-instr-ret
.Pq Event CEH , Tn "Pentium II"
Count the number of MMX instructions retired.
.It Li p6-mmx-instr-type-exec Op Li ,umask= Ns Ar qualifier
.Pq Event B3H , Tn "Pentium II" , Tn "Pentium III"
Count the number of MMX instructions executed.
An additional qualifier may be specified and comprises a list of
the following keywords separated by
.Ql +
characters:
.Pp
.Bl -tag -width indent -compact
.It Li pack
Count MMX pack operation instructions.
.It Li packed-arithmetic
Count MMX packed arithmetic instructions.
.It Li packed-logical
Count MMX packed logical instructions.
.It Li packed-multiply
Count MMX packed multiply instructions.
.It Li packed-shift
Count MMX packed shift instructions.
.It Li unpack
Count MMX unpack operation instructions.
.El
.Pp
The default is to count all operations.
.It Li p6-mmx-sat-instr-exec
.Pq Event B1H , Tn "Pentium II" , Tn "Pentium III"
Count the number of MMX saturating instructions executed.
.It Li p6-mmx-uops-exec
.Pq Event B2H , Tn "Pentium II" , Tn "Pentium III"
Count the number of MMX micro-ops executed.
.It Li p6-mul
.Pq Event 12H
Count the number of integer and floating-point multiplies, including
speculative multiplies.
This event is only allocated on counter 1.
.It Li p6-partial-rat-stalls
.Pq Event D2H
Count the number of cycles or events for partial stalls.
.It Li p6-resource-stalls
.Pq Event A2H
Count the number of cycles there was a resource related stall of any kind.
.It Li p6-ret-seg-renames
.Pq Event D6H , Tn "Pentium II" , Tn "Pentium III"
Count the number of segment register rename events retired.
.It Li p6-sb-drains
.Pq Event 04H
Count the number of cycles the store buffer is draining.
.It Li p6-seg-reg-renames Op Li ,umask= Ns Ar qualifier
.Pq Event D5H , Tn "Pentium II" , Tn "Pentium III"
Count the number of segment register renames.
An additional qualifier may be specified, and comprises a list of the
following keywords separated by
.Ql +
characters:
.Pp
.Bl -tag -width indent -compact
.It Li ds
Count renames for segment register DS.
.It Li es
Count renames for segment register ES.
.It Li fs
Count renames for segment register FS.
.It Li gs
Count renames for segment register GS.
.El
.Pp
The default is to count operations affecting all segment registers.
.It Li p6-seg-rename-stalls
.Pq Event D4H , Tn "Pentium II" , Tn "Pentium III"
Count the number of segment register renaming stalls.
An additional qualifier may be specified, and comprises a list of the
following keywords separated by
.Ql +
characters:
.Pp
.Bl -tag -width indent -compact
.It Li ds
Count stalls for segment register DS.
.It Li es
Count stalls for segment register ES.
.It Li fs
Count stalls for segment register FS.
.It Li gs
Count stalls for segment register GS.
.El
.Pp
The default is to count operations affecting all the segment registers.
.It Li p6-segment-reg-loads
.Pq Event 06H
Count the number of segment register loads.
.It Li p6-uops-retired
.Pq Event C2H
Count the number of micro-ops retired.
.El
.Ss Event Name Aliases
The following table shows the mapping between the PMC-independent
aliases supported by
.Lb libpmc
and the underlying hardware events used.
.Bl -column "branch-mispredicts" "Description"
.It Em Alias Ta Em Event
.It Li branches Ta Li p6-br-inst-retired
.It Li branch-mispredicts Ta Li p6-br-miss-pred-retired
.It Li dc-misses Ta Li p6-dcu-lines-in
.It Li ic-misses Ta Li p6-ifu-fetch-miss
.It Li instructions Ta Li p6-inst-retired
.It Li interrupts Ta Li p6-hw-int-rx
.It Li unhalted-cycles Ta Li p6-cpu-clk-unhalted
.El
.Sh SEE ALSO
.Xr pmc 3 ,
.Xr pmc.atom 3 ,
.Xr pmc.core 3 ,
.Xr pmc.core2 3 ,
.Xr pmc.iaf 3 ,
.Xr pmc.k7 3 ,
.Xr pmc.k8 3 ,
.Xr pmc.p4 3 ,
.Xr pmc.p5 3 ,
.Xr pmc.soft 3 ,
.Xr pmc.tsc 3 ,
.Xr pmclog 3 ,
.Xr hwpmc 4
.Sh HISTORY
The
.Nm pmc
library first appeared in
.Fx 6.0 .
.Sh AUTHORS
The
.Lb libpmc
library was written by
.An Joseph Koshy Aq Mt jkoshy@FreeBSD.org .