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PMC.K8(3)              FreeBSD Library Functions Manual              PMC.K8(3)

NAME
     pmc.k8 - measurement events for AMD Athlon 64 (K8 family) CPUs

LIBRARY
     Performance Counters Library (libpmc, -lpmc)

SYNOPSIS
     #include <pmc.h>

DESCRIPTION
     AMD K8 PMCs are present in the AMD Athlon64 and AMD Opteron series of
     CPUs.  They are documented in the BIOS and Kernel Developer's Guide for
     the AMD Athlon(tm) 64 and AMD Opteron Processors, Publication No. 26094,
     Advanced Micro Devices, Inc., April 2004.

   PMC Features
     AMD K8 PMCs are 48 bits wide.  Each CPU contains 4 PMCs with the
     following capabilities:

     Capability           Support
     PMC_CAP_CASCADE      No
     PMC_CAP_EDGE         Yes
     PMC_CAP_INTERRUPT    Yes
     PMC_CAP_INVERT       Yes
     PMC_CAP_READ         Yes
     PMC_CAP_PRECISE      No
     PMC_CAP_SYSTEM       Yes
     PMC_CAP_TAGGING      No
     PMC_CAP_THRESHOLD    Yes
     PMC_CAP_USER         Yes
     PMC_CAP_WRITE        Yes

   Event Qualifiers
     Event specifiers for AMD K8 PMCs can have the following optional
     qualifiers:

     count=value
             Configure the counter to increment only if the number of
             configured events measured in a cycle is greater than or equal to
             value.

     edge    Configure the counter to only count negated-to-asserted
             transitions of the conditions expressed by the other fields.  In
             other words, the counter will increment only once whenever a
             given condition becomes true, irrespective of the number of
             clocks during which the condition remains true.

     inv     Invert the sense of comparison when the ``count'' qualifier is
             present, making the counter to increment when the number of
             events per cycle is less than the value specified by the
             ``count'' qualifier.

     mask=qualifier
             Many event specifiers for AMD K8 PMCs need to be additionally
             qualified using a mask qualifier.  These additional qualifiers
             are event-specific and are documented along with their associated
             event specifiers below.

     os      Configure the PMC to count events happening at privilege level 0.

     usr     Configure the PMC to count events occurring at privilege levels
             1, 2 or 3.

     If neither of the ``os'' or ``usr'' qualifiers were specified, the
     default is to enable both.

   AMD K8 Event Specifiers
     The event specifiers supported on AMD K8 PMCs are:

     k8-bu-cpu-clk-unhalted
             (Event 76H) Count the number of clock cycles when the CPU is not
             in the HLT or STPCLK states.

     k8-bu-fill-request-l2-miss [,mask=qualifier]
             (Event 7EH) Count fill requests that missed in the L2 cache.
             This event may be further qualified using qualifier, which is a
             `+' separated set of the following keywords:

             dc-fill
                     Count data cache fill requests.
             ic-fill
                     Count instruction cache fill requests.
             tlb-reload
                     Count TLB reloads.

             The default is to count all types of requests.

     k8-bu-fill-into-l2 [,mask=qualifier]
             (Event 7FH) The number of lines written to and from the L2 cache.
             The event may be further qualified by using qualifier, which is a
             `+' separated set of the following keywords:

             dirty-l2-victim
                     Count lines written into L2 cache due to victim
                     writebacks from the Icache or Dcache, TLB page table
                     walks or hardware data prefetches.
             victim-from-l2
                     Count writebacks of dirty lines from L2 to the system.

     k8-bu-internal-l2-request [,mask=qualifier]
             (Event 7DH) Count internally generated requests to the L2 cache.
             This event may be further qualified using qualifier, which is a
             `+' separated set of the following keywords:

             cancelled
                     Count cancelled requests.
             dc-fill
                     Count data cache fill requests.
             ic-fill
                     Count instruction cache fill requests.
             tag-snoop
                     Count tag snoop requests.
             tlb-reload
                     Count TLB reloads.

             The default is to count all types of requests.

     k8-dc-access
             (Event 40H) Count data cache accesses including microcode scratch
             pad accesses.

     k8-dc-copyback [,mask=qualifier]
             (Event 44H) Count data cache copyback operations.  This event may
             be further qualified using qualifier, which is a `+' separated
             set of the following keywords:

             exclusive
                     Count operations for lines in the ``exclusive'' state.
             invalid
                     Count operations for lines in the ``invalid'' state.
             modified
                     Count operations for lines in the ``modified'' state.
             owner   Count operations for lines in the ``owner'' state.
             shared  Count operations for lines in the ``shared'' state.

             The default is to count operations for lines in all the above
             states.

     k8-dc-dcache-accesses-by-locks [,mask=qualifier]
             (Event 4CH) Count data cache accesses by lock instructions.  This
             event is only available on processors of revision C or later
             vintage.  This event may be further qualified using qualifier,
             which is a `+' separated set of the following keywords:

             accesses
                     Count data cache accesses by lock instructions.
             misses  Count data cache misses by lock instructions.

             The default is to count all accesses.

     k8-dc-dispatched-prefetch-instructions [,mask=qualifier]
             (Event 4BH) Count the number of dispatched prefetch instructions.
             This event may be further qualified using qualifier, which is a
             `+' separated set of the following keywords:

             load    Count load operations.
             nta     Count non-temporal operations.
             store   Count store operations.

             The default is to count all operations.

     k8-dc-l1-dtlb-miss-and-l2-dtlb-hit
             (Event 45H) Count L1 DTLB misses that are L2 DTLB hits.

     k8-dc-l1-dtlb-miss-and-l2-dtlb-miss
             (Event 46H) Count L1 DTLB misses that are also misses in the L2
             DTLB.

     k8-dc-microarchitectural-early-cancel-of-an-access
             (Event 49H) Count microarchitectural early cancels of data cache
             accesses.

     k8-dc-microarchitectural-late-cancel-of-an-access
             (Event 48H) Count microarchitectural late cancels of data cache
             accesses.

     k8-dc-misaligned-data-reference
             (Event 47H) Count misaligned data references.

     k8-dc-miss
             (Event 41H) Count data cache misses.

     k8-dc-one-bit-ecc-error [,mask=qualifier]
             (Event 4AH) Count one bit ECC errors found by the scrubber.  This
             event may be further qualified using qualifier, which is a `+'
             separated set of the following keywords:

             scrubber
                     Count scrubber detected errors.
             piggyback
                     Count piggyback scrubber errors.

             The default is to count both kinds of errors.

     k8-dc-refill-from-l2 [,mask=qualifier]
             (Event 42H) Count data cache refills from L2 cache.  This event
             may be further qualified using qualifier, which is a `+'
             separated set of the following keywords:

             exclusive
                     Count operations for lines in the ``exclusive'' state.
             invalid
                     Count operations for lines in the ``invalid'' state.
             modified
                     Count operations for lines in the ``modified'' state.
             owner   Count operations for lines in the ``owner'' state.
             shared  Count operations for lines in the ``shared'' state.

             The default is to count operations for lines in all the above
             states.

     k8-dc-refill-from-system [,mask=qualifier]
             (Event 43H) Count data cache refills from system memory.  This
             event may be further qualified using qualifier, which is a `+'
             separated set of the following keywords:

             exclusive
                     Count operations for lines in the ``exclusive'' state.
             invalid
                     Count operations for lines in the ``invalid'' state.
             modified
                     Count operations for lines in the ``modified'' state.
             owner   Count operations for lines in the ``owner'' state.
             shared  Count operations for lines in the ``shared'' state.

             The default is to count operations for lines in all the above
             states.

     k8-fp-cycles-with-no-fpu-ops-retired
             (Event 01H) Count cycles when no FPU ops were retired.  This
             event is supported in revision B and later CPUs.

     k8-fp-dispatched-fpu-fast-flag-ops
             (Event 02H) Count dispatched FPU ops that use the fast flag
             interface.  This event is supported in revision B and later CPUs.

     k8-fp-dispatched-fpu-ops [,mask=qualifier]
             (Event 00H) Count the number of dispatched FPU ops.  This event
             is supported in revision B and later CPUs.  This event may be
             further qualified using qualifier, which is a `+' separated set
             of the following keywords:

             add-pipe-excluding-junk-ops
                     Count add pipe ops excluding junk ops.
             add-pipe-junk-ops
                     Count junk ops in the add pipe.
             multiply-pipe-excluding-junk-ops
                     Count multiply pipe ops excluding junk ops.
             multiply-pipe-junk-ops
                     Count junk ops in the multiply pipe.
             store-pipe-excluding-junk-ops
                     Count store pipe ops excluding junk ops
             store-pipe-junk-ops
                     Count junk ops in the store pipe.

             The default is to count all types of ops.

     k8-fr-decoder-empty
             (Event D0H) Count cycles when there was nothing to dispatch
             (i.e., the decoder was empty).

     k8-fr-dispatch-stall-for-segment-load
             (Event D4H) Count dispatch stalls for segment loads.

     k8-fr-dispatch-stall-for-serialization
             (Event D3H) Count dispatch stalls for serialization.

     k8-fr-dispatch-stall-from-branch-abort-to-retire
             (Event D2H) Count dispatch stalls from branch abort to retiral.

     k8-fr-dispatch-stall-when-fpu-is-full
             (Event D7H) Count dispatch stalls when the FPU is full.

     k8-fr-dispatch-stall-when-ls-is-full
             (Event D8H) Count dispatch stalls when the load/store unit is
             full.

     k8-fr-dispatch-stall-when-reorder-buffer-is-full
             (Event D5H) Count dispatch stalls when the reorder buffer is
             full.

     k8-fr-dispatch-stall-when-reservation-stations-are-full
             (Event D6H) Count dispatch stalls when reservation stations are
             full.

     k8-fr-dispatch-stall-when-waiting-far-xfer-or-resync-branch-pending
             (Event DAH) Count dispatch stalls when a far control transfer or
             a resync branch is pending.

     k8-fr-dispatch-stall-when-waiting-for-all-to-be-quiet
             (Event D9H) Count dispatch stalls when waiting for all to be
             quiet.

     k8-fr-dispatch-stalls
             (Event D1H) Count all dispatch stalls.

     k8-fr-fpu-exceptions [,mask=qualifier]
             (Event DBH) Count FPU exceptions.  This event is supported in
             revision B and later CPUs.  This event may be further qualified
             using qualifier, which is a `+' separated set of the following
             keywords:

             sse-and-x87-microtraps
                     Count SSE and x87 microtraps.
             sse-reclass-microfaults
                     Count SSE reclass microfaults
             sse-retype-microfaults
                     Count SSE retype microfaults
             x87-reclass-microfaults
                     Count x87 reclass microfaults.

             The default is to count all types of exceptions.

     k8-fr-interrupts-masked-cycles
             (Event CDH) Count cycles when interrupts were masked (by CPU
             RFLAGS field IF was zero).

     k8-fr-interrupts-masked-while-pending-cycles
             (Event CEH) Count cycles while interrupts were masked while
             pending (i.e., cycles when INTR was asserted while CPU RFLAGS
             field IF was zero).

     k8-fr-number-of-breakpoints-for-dr0
             (Event DCH) Count the number of breakpoints for DR0.

     k8-fr-number-of-breakpoints-for-dr1
             (Event DDH) Count the number of breakpoints for DR1.

     k8-fr-number-of-breakpoints-for-dr2
             (Event DEH) Count the number of breakpoints for DR2.

     k8-fr-number-of-breakpoints-for-dr3
             (Event DFH) Count the number of breakpoints for DR3.

     k8-fr-retired-branches
             (Event C2H) Count retired branches including exceptions and
             interrupts.

     k8-fr-retired-branches-mispredicted
             (Event C3H) Count mispredicted retired branches.

     k8-fr-retired-far-control-transfers
             (Event C6H) Count retired far control transfers (which are always
             mispredicted).

     k8-fr-retired-fastpath-double-op-instructions [,mask=qualifier]
             (Event CCH) Count retired fastpath double op instructions.  This
             event is supported in revision B and later CPUs.  This event may
             be further qualified using qualifier, which is a `+' separated
             set of the following keywords:

             low-op-pos-0
                     Count instructions with the low op in position 0.
             low-op-pos-1
                     Count instructions with the low op in position 1.
             low-op-pos-2
                     Count instructions with the low op in position 2.

             The default is to count all types of instructions.

     k8-fr-retired-fpu-instructions [,mask=qualifier]
             (Event CBH) Count retired FPU instructions.  This event is
             supported in revision B and later CPUs.  This event may be
             further qualified using qualifier, which is a `+' separated set
             of the following keywords:

             mmx-3dnow
                     Count MMX and 3DNow! instructions.
             packed-sse-sse2
                     Count packed SSE and SSE2 instructions.
             scalar-sse-sse2
                     Count scalar SSE and SSE2 instructions
             x87     Count x87 instructions.

             The default is to count all types of instructions.

     k8-fr-retired-near-returns
             (Event C8H) Count retired near returns.

     k8-fr-retired-near-returns-mispredicted
             (Event C9H) Count mispredicted near returns.

     k8-fr-retired-resyncs
             (Event C7H) Count retired resyncs (non-control transfer
             branches).

     k8-fr-retired-taken-branches
             (Event C4H) Count retired taken branches.

     k8-fr-retired-taken-branches-mispredicted
             (Event C5H) Count retired taken branches that were mispredicted.

     k8-fr-retired-taken-branches-mispredicted-by-addr-miscompare
             (Event CAH) Count retired taken branches that were mispredicted
             only due to an address miscompare.

     k8-fr-retired-taken-hardware-interrupts
             (Event CFH) Count retired taken hardware interrupts.

     k8-fr-retired-uops
             (Event C1H) Count retired uops.

     k8-fr-retired-x86-instructions
             (Event C0H) Count retired x86 instructions including exceptions
             and interrupts.

     k8-ic-fetch
             (Event 80H) Count instruction cache fetches.

     k8-ic-instruction-fetch-stall
             (Event 87H) Count cycles in stalls due to instruction fetch.

     k8-ic-l1-itlb-miss-and-l2-itlb-hit
             (Event 84H) Count L1 ITLB misses that are L2 ITLB hits.

     k8-ic-l1-itlb-miss-and-l2-itlb-miss
             (Event 85H) Count ITLB misses that miss in both L1 and L2 ITLBs.

     k8-ic-microarchitectural-resync-by-snoop
             (Event 86H) Count microarchitectural resyncs caused by snoops.

     k8-ic-miss
             (Event 81H) Count instruction cache misses.

     k8-ic-refill-from-l2
             (Event 82H) Count instruction cache refills from L2 cache.

     k8-ic-refill-from-system
             (Event 83H) Count instruction cache refills from system memory.

     k8-ic-return-stack-hits
             (Event 88H) Count hits to the return stack.

     k8-ic-return-stack-overflow
             (Event 89H) Count overflows of the return stack.

     k8-ls-buffer2-full
             (Event 23H) Count load/store buffer2 full events.

     k8-ls-locked-operation [,mask=qualifier]
             (Event 24H) Count locked operations.  For revision C and later
             CPUs, the following qualifiers are supported:

             cycles-in-request
                     Count the number of cycles in the lock request/grant
                     stage.
             cycles-to-complete
                     Count the number of cycles a lock takes to complete once
                     it is non-speculative and is the older load/store
                     operation.
             locked-instructions
                     Count the number of lock instructions executed.

             The default is to count the number of lock instructions executed.

     k8-ls-microarchitectural-late-cancel
             (Event 25H) Count microarchitectural late cancels of operations
             in the load/store unit.

     k8-ls-microarchitectural-resync-by-self-modifying-code
             (Event 21H) Count microarchitectural resyncs caused by self-
             modifying code.

     k8-ls-microarchitectural-resync-by-snoop
             (Event 22H) Count microarchitectural resyncs caused by snoops.

     k8-ls-retired-cflush-instructions
             (Event 26H) Count retired CFLUSH instructions.

     k8-ls-retired-cpuid-instructions
             (Event 27H) Count retired CPUID instructions.

     k8-ls-segment-register-load [,mask=qualifier]
             (Event 20H) Count segment register loads.  This event may be
             further qualified using qualifier, which is a `+' separated set
             of the following keywords:
             cs      Count CS register loads.
             ds      Count DS register loads.
             es      Count ES register loads.
             fs      Count FS register loads.
             gs      Count GS register loads.
             ss      Count SS register loads.

             The default is to count all types of loads.

     k8-nb-ht-bus0-bandwidth [,mask=qualifier]

     k8-nb-ht-bus1-bandwidth [,mask=qualifier]

     k8-nb-ht-bus2-bandwidth [,mask=qualifier]
             (Events F6H, F7H and F8H respectively) Count events on the
             HyperTransport(tm) buses.  These events may be further qualified
             using qualifier, which is a `+' separated set of the following
             keywords:

             buffer-release
                     Count buffer release messages sent.
             command
                     Count command messages sent.
             data    Count data messages sent.
             nop     Count nop messages sent.

             The default is to count all types of messages.

     k8-nb-memory-controller-bypass-saturation [,mask=qualifier]
             (Event E4H) Count memory controller bypass counter saturation
             events.  This event may be further qualified using qualifier,
             which is a `+' separated set of the following keywords:

             dram-controller-interface-bypass
                     Count DRAM controller interface bypass.
             dram-controller-queue-bypass
                     Count DRAM controller queue bypass.
             memory-controller-hi-pri-bypass
                     Count memory controller high priority bypasses.
             memory-controller-lo-pri-bypass
                     Count memory controller low priority bypasses.

     k8-nb-memory-controller-dram-slots-missed
             (Event E2H) Count memory controller DRAM command slots missed (in
             MemClks).

     k8-nb-memory-controller-page-access-event [,mask=qualifier]
             (Event E0H) Count memory controller page access events.  This
             event may be further qualified using qualifier, which is a `+'
             separated set of the following keywords:

             page-conflict
                     Count page conflicts.
             page-hit
                     Count page hits.
             page-miss
                     Count page misses.

             The default is to count all types of events.

     k8-nb-memory-controller-page-table-overflow
             (Event E1H) Count memory control page table overflow events.

     k8-nb-memory-controller-turnaround [,mask=qualifier]
             (Event E3H) Count memory control turnaround events.  This event
             may be further qualified using qualifier, which is a `+'
             separated set of the following keywords:

             dimm-turnaround
                     Count DIMM turnarounds.
             read-to-write-turnaround
                     Count read to write turnarounds.
             write-to-read-turnaround
                     Count write to read turnarounds.

             The default is to count all types of events.

     k8-nb-probe-result [,mask=qualifier]
             (Event ECH) Count probe events.  This event may be further
             qualified using qualifier, which is a `+' separated set of the
             following keywords:

             probe-hit
                     Count all probe hits.
             probe-hit-dirty-no-memory-cancel
                     Count probe hits without memory cancels.
             probe-hit-dirty-with-memory-cancel
                     Count probe hits with memory cancels.
             probe-miss
                     Count probe misses.

     k8-nb-sized-commands [,mask=qualifier]
             (Event EBH) Count sized commands issued.  This event may be
             further qualified using qualifier, which is a `+' separated set
             of the following keywords:

             nonpostwrszbyte
             nonpostwrszdword
             postwrszbyte
             postwrszdword
             rdszbyte
             rdszdword
             rdmodwr

             The default is to count all types of commands.

   Event Name Aliases
     The following table shows the mapping between the PMC-independent aliases
     supported by Performance Counters Library (libpmc, -lpmc) and the
     underlying hardware events used.

     Alias                 Event
     branches              k8-fr-retired-taken-branches
     branch-mispredicts    k8-fr-retired-taken-branches-mispredicted
     dc-misses             k8-dc-miss
     ic-misses             k8-ic-miss
     instructions          k8-fr-retired-x86-instructions
     interrupts            k8-fr-taken-hardware-interrupts
     unhalted-cycles       k8-bu-cpu-clk-unhalted

SEE ALSO
     pmc(3), pmc.atom(3), pmc.core(3), pmc.core2(3), pmc.iaf(3), pmc.k7(3),
     pmc.p4(3), pmc.p5(3), pmc.p6(3), pmc.soft(3), pmc.tsc(3), pmclog(3),
     hwpmc(4)

HISTORY
     The pmc library first appeared in FreeBSD 6.0.

AUTHORS
     The Performance Counters Library (libpmc, -lpmc) library was written by
     Joseph Koshy <jkoshy@FreeBSD.org>.

FreeBSD 11.0-PRERELEASE         October 4, 2008        FreeBSD 11.0-PRERELEASE

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS

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