2012-03-25 02:22:32 +00:00
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.\" Copyright (c) 2010 George Neville-Neil. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd March 24, 2012
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.Dt PMC.OCTEON 3
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.Os
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.Sh NAME
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.Nm pmc.octeon
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.Nd measurement events for
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.Tn Octeon
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family CPUs
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.Sh LIBRARY
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.Lb libpmc
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.Sh SYNOPSIS
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.In pmc.h
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.Sh DESCRIPTION
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There are two counters per core supported by the hardware and each is 64 bits
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wide.
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.Ss Event Specifiers (Programmable PMCs)
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MIPS programmable PMCs support the following events:
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.Bl -tag -width indent
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.It Li CLK
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.Pq Event 1
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Conditionally clocked cycles (as opposed to count/cvm_count which count even with no clocks)
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.It Li ISSUE
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.Pq Event 2
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Instructions issued but not retired
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.It Li RET
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.Pq Event 3
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Instructions retired
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.It Li NISSUE
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.Pq Event 4
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Cycles no issue
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.It Li SISSUE
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.Pq Event 5
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Cycles single issue
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.It Li DISSUE
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.Pq Event 6
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Cycles dual issue
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.It Li IFI
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.Pq Event 7
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Cycle ifetch issued (but not necessarily commit to pp_mem)
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.It Li BR
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.Pq Event 8
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Branches retired
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.It Li BRMIS
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.Pq Event 9
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Branch mispredicts
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.It Li J
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.Pq Event 10
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Jumps retired
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.It Li JMIS
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.Pq Event 11
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Jumps mispredicted
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.It Li REPLAY
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.Pq Event 12
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Mem Replays
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.It Li IUNA
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.Pq Event 13
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Cycles idle due to unaligned_replays
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.It Li TRAP
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.Pq Event 14
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trap_6a signal
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.It Li UULOAD
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.Pq Event 16
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Unexpected unaligned loads (REPUN=1)
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.It Li UUSTORE
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.Pq Event 17
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Unexpected unaligned store (REPUN=1)
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.It Li ULOAD
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.Pq Event 18
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Unaligned loads (REPUN=1 or USEUN=1)
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.It Li USTORE
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.Pq Event 19
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Unaligned store (REPUN=1 or USEUN=1)
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.It Li EC
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.Pq Event 20
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Exec clocks(must set CvmCtl[DISCE] for accurate timing)
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.It Li MC
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.Pq Event 21
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Mul clocks(must set CvmCtl[DISCE] for accurate timing)
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.It Li CC
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.Pq Event 22
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Crypto clocks(must set CvmCtl[DISCE] for accurate timing)
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.It Li CSRC
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.Pq Event 23
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Issue_csr clocks(must set CvmCtl[DISCE] for accurate timing)
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.It Li CFETCH
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.Pq Event 24
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Icache committed fetches (demand+prefetch)
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.It Li CPREF
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.Pq Event 25
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Icache committed prefetches
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.It Li ICA
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.Pq Event 26
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Icache aliases
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.It Li II
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.Pq Event 27
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Icache invalidates
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.It Li IP
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.Pq Event 28
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Icache parity error
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.It Li CIMISS
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.Pq Event 29
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Cycles idle due to imiss (must set CvmCtl[DISCE] for accurate timing)
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.It Li WBUF
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.Pq Event 32
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Number of write buffer entries created
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.It Li WDAT
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.Pq Event 33
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Number of write buffer data cycles used (may need to set CvmCtl[DISCE] for accurate counts)
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.It Li WBUFLD
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.Pq Event 34
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Number of write buffer entries forced out by loads
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.It Li WBUFFL
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.Pq Event 35
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Number of cycles that there was no available write buffer entry (may need to set CvmCtl[DISCE] and CvmMemCtl[MCLK] for accurate counts)
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.It Li WBUFTR
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.Pq Event 36
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Number of stores that found no available write buffer entries
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.It Li BADD
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.Pq Event 37
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Number of address bus cycles used (may need to set CvmCtl[DISCE] for accurate counts)
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.It Li BADDL2
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.Pq Event 38
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Number of address bus cycles not reflected (i.e. destined for L2) (may need to set CvmCtl[DISCE] for accurate counts)
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.It Li BFILL
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.Pq Event 39
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Number of fill bus cycles used (may need to set CvmCtl[DISCE] for accurate counts)
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.It Li DDIDS
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.Pq Event 40
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Number of Dstream DIDs created
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.It Li IDIDS
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.Pq Event 41
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Number of Istream DIDs created
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.It Li DIDNA
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.Pq Event 42
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Number of cycles that no DIDs were available (may need to set CvmCtl[DISCE] and CvmMemCtl[MCLK] for accurate counts)
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.It Li LDS
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.Pq Event 43
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Number of load issues
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.It Li LMLDS
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.Pq Event 44
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Number of local memory load
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.It Li IOLDS
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.Pq Event 45
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Number of I/O load issues
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.It Li DMLDS
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.Pq Event 46
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Number of loads that were not prefetches and missed in the cache
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.It Li STS
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.Pq Event 48
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Number of store issues
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.It Li LMSTS
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.Pq Event 49
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Number of local memory store issues
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.It Li IOSTS
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.Pq Event 50
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Number of I/O store issues
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.It Li IOBDMA
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.Pq Event 51
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Number of IOBDMAs
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.It Li DTLB
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.Pq Event 53
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Number of dstream TLB refill, invalid, or modified exceptions
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.It Li DTLBAD
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.Pq Event 54
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Number of dstream TLB address errors
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.It Li ITLB
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.Pq Event 55
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Number of istream TLB refill, invalid, or address error exceptions
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.It Li SYNC
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.Pq Event 56
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Number of SYNC stall cycles (may need to set CvmCtl[DISCE] for accurate counts)
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.It Li SYNCIOB
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.Pq Event 57
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Number of SYNCIOBDMA stall cycles (may need to set CvmCtl[DISCE] for accurate counts)
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.It Li SYNCW
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.Pq Event 58
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Number of SYNCWs
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.It Li ERETMIS
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.Pq Event 64
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D/eret mispredicts (CN63XX specific)
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.It Li LIKMIS
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.Pq Event 65
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Branch likely mispredicts (CN63XX specific)
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.It Li HAZTR
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.Pq Event 66
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Hazard traps due to *MTC0 to CvmCtl, Perf counter control, EntryHi, or CvmMemCtl registers (CN63XX specific)
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.El
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.Ss Event Name Aliases
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The following table shows the mapping between the PMC-independent
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aliases supported by
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.Lb libpmc
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and the underlying hardware events used.
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.Bl -column "branch-mispredicts" "cpu_clk_unhalted.core_p"
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2012-03-27 15:55:56 +00:00
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.It Em Alias Ta Em Event
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.It Li instructions Ta Li RET
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.It Li branches Ta Li BR
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.It Li branch-mispredicts Ta Li BS
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2012-03-25 02:22:32 +00:00
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.El
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.Sh SEE ALSO
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.Xr pmc 3 ,
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.Xr pmc.atom 3 ,
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.Xr pmc.core 3 ,
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.Xr pmc.iaf 3 ,
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.Xr pmc.k7 3 ,
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.Xr pmc.k8 3 ,
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.Xr pmc.mips24k 3 ,
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.Xr pmc.p4 3 ,
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.Xr pmc.p5 3 ,
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.Xr pmc.p6 3 ,
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.Xr pmc.tsc 3 ,
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.Xr pmc_cpuinfo 3 ,
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.Xr pmclog 3 ,
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.Xr hwpmc 4
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.Sh HISTORY
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The
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.Nm pmc
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library first appeared in
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.Fx 6.0 .
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.Sh AUTHORS
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The
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.Lb libpmc
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library was written by
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.An "Joseph Koshy"
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.Aq jkoshy@FreeBSD.org .
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MIPS support was added by
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.An "George Neville-Neil"
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.Aq gnn@FreeBSD.org .
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