freebsd-skq/lib/libpmc/pmc.octeon.3

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.Dd March 24, 2012
.Dt PMC.OCTEON 3
.Os
.Sh NAME
.Nm pmc.octeon
.Nd measurement events for
.Tn Octeon
family CPUs
.Sh LIBRARY
.Lb libpmc
.Sh SYNOPSIS
.In pmc.h
.Sh DESCRIPTION
There are two counters per core supported by the hardware and each is 64 bits
wide.
.Ss Event Specifiers (Programmable PMCs)
MIPS programmable PMCs support the following events:
.Bl -tag -width indent
.It Li CLK
.Pq Event 1
Conditionally clocked cycles (as opposed to count/cvm_count which count even with no clocks)
.It Li ISSUE
.Pq Event 2
Instructions issued but not retired
.It Li RET
.Pq Event 3
Instructions retired
.It Li NISSUE
.Pq Event 4
Cycles no issue
.It Li SISSUE
.Pq Event 5
Cycles single issue
.It Li DISSUE
.Pq Event 6
Cycles dual issue
.It Li IFI
.Pq Event 7
Cycle ifetch issued (but not necessarily commit to pp_mem)
.It Li BR
.Pq Event 8
Branches retired
.It Li BRMIS
.Pq Event 9
Branch mispredicts
.It Li J
.Pq Event 10
Jumps retired
.It Li JMIS
.Pq Event 11
Jumps mispredicted
.It Li REPLAY
.Pq Event 12
Mem Replays
.It Li IUNA
.Pq Event 13
Cycles idle due to unaligned_replays
.It Li TRAP
.Pq Event 14
trap_6a signal
.It Li UULOAD
.Pq Event 16
Unexpected unaligned loads (REPUN=1)
.It Li UUSTORE
.Pq Event 17
Unexpected unaligned store (REPUN=1)
.It Li ULOAD
.Pq Event 18
Unaligned loads (REPUN=1 or USEUN=1)
.It Li USTORE
.Pq Event 19
Unaligned store (REPUN=1 or USEUN=1)
.It Li EC
.Pq Event 20
Exec clocks(must set CvmCtl[DISCE] for accurate timing)
.It Li MC
.Pq Event 21
Mul clocks(must set CvmCtl[DISCE] for accurate timing)
.It Li CC
.Pq Event 22
Crypto clocks(must set CvmCtl[DISCE] for accurate timing)
.It Li CSRC
.Pq Event 23
Issue_csr clocks(must set CvmCtl[DISCE] for accurate timing)
.It Li CFETCH
.Pq Event 24
Icache committed fetches (demand+prefetch)
.It Li CPREF
.Pq Event 25
Icache committed prefetches
.It Li ICA
.Pq Event 26
Icache aliases
.It Li II
.Pq Event 27
Icache invalidates
.It Li IP
.Pq Event 28
Icache parity error
.It Li CIMISS
.Pq Event 29
Cycles idle due to imiss (must set CvmCtl[DISCE] for accurate timing)
.It Li WBUF
.Pq Event 32
Number of write buffer entries created
.It Li WDAT
.Pq Event 33
Number of write buffer data cycles used (may need to set CvmCtl[DISCE] for accurate counts)
.It Li WBUFLD
.Pq Event 34
Number of write buffer entries forced out by loads
.It Li WBUFFL
.Pq Event 35
Number of cycles that there was no available write buffer entry (may need to set CvmCtl[DISCE] and CvmMemCtl[MCLK] for accurate counts)
.It Li WBUFTR
.Pq Event 36
Number of stores that found no available write buffer entries
.It Li BADD
.Pq Event 37
Number of address bus cycles used (may need to set CvmCtl[DISCE] for accurate counts)
.It Li BADDL2
.Pq Event 38
Number of address bus cycles not reflected (i.e. destined for L2) (may need to set CvmCtl[DISCE] for accurate counts)
.It Li BFILL
.Pq Event 39
Number of fill bus cycles used (may need to set CvmCtl[DISCE] for accurate counts)
.It Li DDIDS
.Pq Event 40
Number of Dstream DIDs created
.It Li IDIDS
.Pq Event 41
Number of Istream DIDs created
.It Li DIDNA
.Pq Event 42
Number of cycles that no DIDs were available (may need to set CvmCtl[DISCE] and CvmMemCtl[MCLK] for accurate counts)
.It Li LDS
.Pq Event 43
Number of load issues
.It Li LMLDS
.Pq Event 44
Number of local memory load
.It Li IOLDS
.Pq Event 45
Number of I/O load issues
.It Li DMLDS
.Pq Event 46
Number of loads that were not prefetches and missed in the cache
.It Li STS
.Pq Event 48
Number of store issues
.It Li LMSTS
.Pq Event 49
Number of local memory store issues
.It Li IOSTS
.Pq Event 50
Number of I/O store issues
.It Li IOBDMA
.Pq Event 51
Number of IOBDMAs
.It Li DTLB
.Pq Event 53
Number of dstream TLB refill, invalid, or modified exceptions
.It Li DTLBAD
.Pq Event 54
Number of dstream TLB address errors
.It Li ITLB
.Pq Event 55
Number of istream TLB refill, invalid, or address error exceptions
.It Li SYNC
.Pq Event 56
Number of SYNC stall cycles (may need to set CvmCtl[DISCE] for accurate counts)
.It Li SYNCIOB
.Pq Event 57
Number of SYNCIOBDMA stall cycles (may need to set CvmCtl[DISCE] for accurate counts)
.It Li SYNCW
.Pq Event 58
Number of SYNCWs
.It Li ERETMIS
.Pq Event 64
D/eret mispredicts (CN63XX specific)
.It Li LIKMIS
.Pq Event 65
Branch likely mispredicts (CN63XX specific)
.It Li HAZTR
.Pq Event 66
Hazard traps due to *MTC0 to CvmCtl, Perf counter control, EntryHi, or CvmMemCtl registers (CN63XX specific)
.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" "cpu_clk_unhalted.core_p"
.It Em Alias Ta Em Event
.It Li instructions Ta Li RET
.It Li branches Ta Li BR
.It Li branch-mispredicts Ta Li BS
.El
.Sh SEE ALSO
.Xr pmc 3 ,
.Xr pmc.atom 3 ,
.Xr pmc.core 3 ,
.Xr pmc.iaf 3 ,
.Xr pmc.k7 3 ,
.Xr pmc.k8 3 ,
.Xr pmc.mips24k 3 ,
.Xr pmc.p4 3 ,
.Xr pmc.p5 3 ,
.Xr pmc.p6 3 ,
.Xr pmc.soft 3 ,
.Xr pmc.tsc 3 ,
.Xr pmc_cpuinfo 3 ,
.Xr pmclog 3 ,
.Xr hwpmc 4
.Sh HISTORY
The
.Nm pmc
library first appeared in
.Fx 6.0 .
.Sh AUTHORS
.An -nosplit
The
.Lb libpmc
library was written by
.An Joseph Koshy Aq Mt jkoshy@FreeBSD.org .
MIPS support was added by
.An George Neville-Neil Aq Mt gnn@FreeBSD.org .