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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 Monitoring Counters Interface 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 follow-
     ing 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 quali-
     fiers:

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

     edge    Configure the counter to only count negated-to-asserted transi-
	     tions of the conditions expressed by the other fields.  In	other
	     words, the	counter	will increment only once whenever a given con-
	     dition 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 write-
		     backs 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 vin-
	     tage.  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 `+' sepa-
	     rated 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 pend-
	     ing (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	sup-
	     ported 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 opera-
		     tion.
	     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-modi-
	     fying 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 fur-
	     ther 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	Hyper-
	     Transport(tm) buses.  These events	may be further qualified using
	     qualifier,	which is a `+' separated set of	the following key-
	     words:

	     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 `+' sepa-
	     rated 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	quali-
	     fied using	qualifier, which is a `+' separated set	of the follow-
	     ing 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 fur-
	     ther 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 Monitoring Counters Interface 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 Monitoring	Counters Interface Library (libpmc, -lpmc)
     library was written by Joseph Koshy <jkoshy@FreeBSD.org>.

FreeBSD	10.1			October	4, 2008			  FreeBSD 10.1

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

Want to link to this manual page? Use this URL:
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