1.\" Copyright (c) 2021 ARM Ltd. All rights reserved. 2.\" 3.\" Redistribution and use in source and binary forms, with or without 4.\" modification, are permitted provided that the following conditions 5.\" are met: 6.\" 1. Redistributions of source code must retain the above copyright 7.\" notice, this list of conditions and the following disclaimer. 8.\" 2. Redistributions in binary form must reproduce the above copyright 9.\" notice, this list of conditions and the following disclaimer in the 10.\" documentation and/or other materials provided with the distribution. 11.\" 12.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 13.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 14.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 15.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 16.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 17.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 18.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 19.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 20.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 21.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 22.\" SUCH DAMAGE. 23.\" 24.\" $FreeBSD$ 25.\" 26.Dd December 19, 2021 27.Dt PMC.CMN-600 3 28.Os 29.Sh NAME 30.Nm pmc.cmn-600 31.Nd Library for accessing the Arm CoreLink CMN-600 Coherent Mesh Network 32Controller performance counter events 33.Sh LIBRARY 34.Lb libpmc 35.Sh SYNOPSIS 36.In pmc.h 37.Sh DESCRIPTION 38CMN-600 PMU counters may be configured to count any one of a defined set of 39hardware events. 40Unlike other performance counters, counters for the CMN-600 require the 41node ID to set up. 42.Pp 43Node ID information currently can be obtained one of two ways. 44Using bootverbose, for example set sysctl debug.bootverbose=1 and then load the 45.Xr hwpmc 4 46KLD module. 47The cmn600 module will be loaded automatically as a dependency: 48.Dl $ sysctl debug.bootverbose=1 49.Dl $ kldload hwpmc 50Another way is to use sysctl to trigger 51dump of nodes tree to system console: 52.Dl $ sysctl dev.cmn600.0.dump_nodes=1 53.Pp 54Some BIOS versions of dual-socket machines have no NUMA domain information in 55ACPI. 56In such cases, to get more accurate events statistics, set the kernel 57environment variable hint.cmn600.{unit}.domain={value}. 58Where {unit} is a cmn600 device unit number and {value} is the NUMA domain of 59the CPU package containing that CMN-600 controller. 60Example: 61.Dl $ kenv hint.cmn600.0.domain=0 62.Dl $ kenv hint.cmn600.1.domain=1 63.Dl $ kldunload hwpmc cmn600 64.Dl $ kldload hwpmc 65.Pp 66Arm CoreLink CMN-600 Coherent Mesh Network Controller performance counters are 67documented in 68.Rs 69.%B "Arm CoreLink CMN-600 Coherent Mesh Network Technical Reference Manual" 70.%T "Revision: r3p2" 71.%D 2020 72.%Q "ARM Limited" 73.Re 74.Ss PMC Capabilities 75CMN-600 PMU counters support the following capabilities: 76.Bl -column "PMC_CAP_INTERRUPT" "Support" 77.It Sy Capability Ta Em Support 78.It PMC_CAP_CASCADE Ta \&No 79.It PMC_CAP_EDGE Ta \&No 80.It PMC_CAP_INTERRUPT Ta Yes 81.It PMC_CAP_INVERT Ta \&No 82.It PMC_CAP_READ Ta Yes 83.It PMC_CAP_PRECISE Ta \&No 84.It PMC_CAP_SYSTEM Ta Yes 85.It PMC_CAP_TAGGING Ta \&No 86.It PMC_CAP_THRESHOLD Ta Yes 87.It PMC_CAP_USER Ta \&No 88.It PMC_CAP_WRITE Ta Yes 89.El 90.Ss Event Qualifiers 91Event specifiers for these PMCs support the following common 92qualifiers: 93.Bl -tag -width indent 94.It Li nodeid= Ns Ar nodeid 95Request counting for specific event at node 96.Ar nodeid . 97.It Li occupancy= Ns Ar value 98Filtering by occupancy type. 99.It Li xpport= Ns Ar port 100Count only events matched by 101.Ar port . 102(East, West, North, South, devport0, devport1 or numeric 0 to 5) 103.It Li xpchannel= Ns Ar channel 104Filter events by XP node channel. 105(REQ, RSP, SNP, DAT or 0, 1, 2, 3) 106.El 107.Ss Class Name Prefix 108These PMCs are named using a class name prefix of 109.Dq Li CMN600_PMU_ . 110.Ss Event Specifiers 111The following list of PMC events are available: 112.Ss DVM node events 113.Bl -tag -width indent 114.It Sy dn_rxreq_dvmop 115Number of DVMOP requests received. 116This includes all the sub-types include TLB invalidate, Branch predictor 117invalidate, instruction cache (physical and virtual) invalidate. 118.It Sy dn_rxreq_dvmsync 119Number of DVM Sync requests received. 120.It Sy dn_rxreq_dvmop_vmid_filtered 121Number of incoming DVMOP requests that are subject to VMID based filtering. 122This is a measure of the effectiveness of VMID based filtering and potential 123reduction in DVM snoops. 124.It Sy dn_rxreq_retried 125Number of incoming requests that are retried. 126This is a measure of the retry rate. 127.It Sy dn_rxreq_trk_occupancy 128Counts the tracker occupancy in DN. "occupancy": All, dvmop, dvmsync 129.It Sy dn_rxreq_tlbi_dvmop 130Number of DVMOP TLB invalidate requests received. 131.It Sy dn_rxreq_bpi_dvmop 132Number of DVMOP Branch predictor invalidate requests received. 133.It Sy dn_rxreq_pici_dvmop 134Number of DVMOP physical instruction cache invalidate requests received. 135.It Sy dn_rxreq_vivi_dvmop 136Number of DVMOP virtual instruction cache invalidate requests received. 137.It Sy dn_rxreq_dvmop_other_filtered 138Number of DVM op requests to RNDs, BPI or PICI/VICI, that were filtered 139.It Sy dn_rxreq_snp_sent 140Number of SNPs sent to RNs 141.It Sy dn_rxreq_snp_stalled 142Number of SNPs stalled to RNs due to lack of Crds 143.It Sy dn_rxreq_trk_full 144DVM tracker full counter 145.El 146.Ss HN-F node events 147.Bl -tag -width indent 148.It Sy hnf_cache_miss 149Counts total cache misses in first lookup result (high priority) 150.It Sy hnf_slc_sf_cache_access 151Counts number of cache accesses in first access (high priority) 152.It Sy hnf_cache_fill 153Counts total allocations in HN SLC (all cache line allocations to SLC) 154.It Sy hnf_pocq_retry 155Counts number of retried requests 156.It Sy hnf_pocq_reqs_recvd 157Counts number of requests received by HN 158.It Sy hnf_sf_hit 159Counts number of SF hits 160.It Sy hnf_sf_evictions 161Counts number of SF eviction cache invalidations initiated 162.It Sy hnf_dir_snoops_sent 163Counts number of directed snoops sent (not including SF back invalidation) 164.It Sy hnf_brd_snoops_sent 165Counts number of multicast snoops sent (not including SF back invalidation) 166.It Sy hnf_slc_eviction 167Counts number of SLC evictions (dirty only) 168.It Sy hnf_slc_fill_invalid_way 169Counts number of SLC fills to an invalid way 170.It Sy hnf_mc_retries 171Counts number of retried transactions by the MC 172.It Sy hnf_mc_reqs 173Counts number of requests sent to MC 174.It Sy hnf_qos_hh_retry 175Counts number of times a HighHigh priority request is protocol-retried at the 176HN-F 177.It Sy hnf_qos_pocq 178Counts the POCQ occupancy in HN-F. 179Support argument "occupancy". Accept: All, Read, Write, Atomic, Stash. 180Default: All. 181.It Sy hnf_pocq_addrhaz 182Counts number of POCQ address hazards upon allocation 183.It Sy hnf_pocq_atomic_addrhaz 184Counts number of POCQ address hazards upon allocation for atomic operations 185.It Sy hnf_ld_st_swp_adq_full 186Counts number of times ADQ is full for Ld/St/SWP type atomic operations while 187POCQ has pending operations 188.It Sy hnf_cmp_adq_full 189Counts number of times ADQ is full for CMP type atomic operations while POCQ 190has pending operations 191.It Sy hnf_txdat_stall 192Counts number of times HN-F has a pending TXDAT flit but no credits to upload 193.It Sy hnf_txrsp_stall 194Counts number of times HN-F has a pending TXRSP flit but no credits to upload 195.It Sy hnf_seq_full 196Counts number of times requests are replayed in SLC pipe due to SEQ being full 197.It Sy hnf_seq_hit 198Counts number of times a request in SLC hit a pending SF eviction in SEQ 199.It Sy hnf_snp_sent 200Counts number of snoops sent including directed, multicast, and SF back 201invalidation 202.It Sy hnf_sfbi_dir_snp_sent 203Counts number of times directed snoops were sent due to SF back invalidation 204.It Sy hnf_sfbi_brd_snp_sent 205Counts number of times multicast snoops were sent due to SF back invalidation 206.It Sy hnf_snp_sent_untrk 207Counts number of times snooped were sent due to untracked RNF's 208.It Sy hnf_intv_dirty 209Counts number of times SF back invalidation resulted in dirty line intervention 210from the RN 211.It Sy hnf_stash_snp_sent 212Counts number of times stash snoops were sent 213.It Sy hnf_stash_data_pull 214Counts number of times stash snoops resulted in data pull from the RN 215.It Sy hnf_snp_fwded 216Counts number of times data forward snoops were sent 217.El 218.Ss HN-I node events 219.Bl -tag -width indent 220.It Sy hni_rrt_rd_occ_cnt_ovfl 221RRT read occupancy count overflow 222.It Sy hni_rrt_wr_occ_cnt_ovfl 223RRT write occupancy count overflow 224.It Sy hni_rdt_rd_occ_cnt_ovfl 225RDT read occupancy count overflow 226.It Sy hni_rdt_wr_occ_cnt_ovfl 227RDT write occupancy count overflow 228.It Sy hni_wdb_occ_cnt_ovfl 229WDB occupancy count overflow 230.It Sy hni_rrt_rd_alloc 231RRT read allocation 232.It Sy hni_rrt_wr_alloc 233RRT write allocation 234.It Sy hni_rdt_rd_alloc 235RDT read allocation 236.It Sy hni_rdt_wr_alloc 237RDT write allocation 238.It Sy hni_wdb_alloc 239WDB allocation 240.It Sy hni_txrsp_retryack 241RETRYACK TXRSP flit sent 242.It Sy hni_arvalid_no_arready 243ARVALID set without ARREADY event 244.It Sy hni_arready_no_arvalid 245ARREADY set without ARVALID event 246.It Sy hni_awvalid_no_awready 247AWVALID set without AWREADY event 248.It Sy hni_awready_no_awvalid 249AWREADY set without AWVALID event 250.It Sy hni_wvalid_no_wready 251WVALID set without WREADY event 252.It Sy hni_txdat_stall 253TXDAT stall (TXDAT valid but no link credit available) 254.It Sy hni_nonpcie_serialization 255Non-PCIe serialization event 256.It Sy hni_pcie_serialization 257PCIe serialization event 258.El 259.Ss XP node events 260.Bl -tag -width indent 261.It Sy xp_txflit_valid 262Number of flits transmitted on a specified port and CHI channel. 263This is a measure of the flit transfer bandwidth from an XP. 264Note: On device ports, this event also includes link flit transfers. 265.It Sy xp_txflit_stall 266Number of cycles when a flit is stalled at an XP waiting for link credits at a 267specified port and CHI channel. 268This is a measure of the flit traffic congestion on the mesh and at the flit 269download ports. 270.It Sy xp_partial_dat_flit 271Number of times when a partial DAT flit is uploaded onto the mesh from a 272RN-F_CHIA port. 273Partial DAT flit transmission occurs when XP is not able to combine two 128b 274DAT flits and send them over the 256b DAT channel. 275This can happen under 2 circumstances: 2761. Only one 128b DAT flit is received within a transmission time window. 2772. Two 128b DAT flits are received but they are not two halves of a 278 single 256b word. 279.El 280.Ss SBSX node events 281.Bl -tag -width indent 282.It Sy sbsx_rd_req 283Read request 284.It Sy sbsx_wr_req 285Write request 286.It Sy sbsx_cmo_req 287CMO request 288.It Sy sbsx_txrsp_retryack 289RETRYACK TXRSP flit sent 290.It Sy sbsx_txdat_flitv 291TXDAT flit seen 292.It Sy sbsx_txrsp_flitv 293TXRSP flit seen 294.It Sy sbsx_rd_req_trkr_occ_cnt_ovfl 295Read request tracker occupancy count overflow 296.It Sy sbsx_wr_req_trkr_occ_cnt_ovfl 297Write request tracker occupancy count overflow 298.It Sy sbsx_cmo_req_trkr_occ_cnt_ovfl 299CMO request tracker occupancy count overflow 300.It Sy sbsx_wdb_occ_cnt_ovfl 301WDB occupancy count overflow 302.It Sy sbsx_rd_axi_trkr_occ_cnt_ovfl 303Read AXI pending tracker occupancy count overflow 304.It Sy sbsx_cmo_axi_trkr_occ_cnt_ovfl 305CMO AXI pending tracker occupancy count overflow 306.It Sy sbsx_arvalid_no_arready 307ARVALID set without ARREADY 308.It Sy sbsx_awvalid_no_awready 309AWVALID set without AWREADY 310.It Sy sbsx_wvalid_no_wready 311WVALID set without WREADY 312.It Sy sbsx_txdat_stall 313TXDAT stall (TXDAT valid but no link credit available) 314.It Sy sbsx_txrsp_stall 315TXRSP stall (TXRSP valid but no link credit available) 316.El 317.Ss RN-D node events 318.Bl -tag -width indent 319.It Sy rnd_s0_rdata_beats 320Number of RData beats, RVALID and RREADY, dispatched on port 0. 321This is a measure of the read bandwidth, including CMO responses. 322.It Sy rnd_s1_rdata_beats 323Number of RData beats, RVALID and RREADY, dispatched on port 1. 324This is a measure of the read bandwidth, including CMO responses. 325.It Sy rnd_s2_rdata_beats 326Number of RData beats, RVALID and RREADY, dispatched on port 2. 327This is a measure of the read bandwidth, including CMO responses. 328.It Sy rnd_rxdat_flits 329Number of RXDAT flits received. 330This is a measure of the true read data bandwidth, excluding CMOs. 331.It Sy rnd_txdat_flits 332Number of TXDAT flits dispatched. 333This is a measure of the write bandwidth. 334.It Sy rnd_txreq_flits_total 335Number of TXREQ flits dispatched. 336This is a measure of the total request 337bandwidth. 338.It Sy rnd_txreq_flits_retried 339Number of retried TXREQ flits dispatched. 340This is a measure of the retry rate. 341.It Sy rnd_rrt_occ_ovfl 342All entries in the read request tracker are occupied. 343This is a measure of oversubscription in the read request tracker. 344.It Sy rnd_wrt_occ_ovfl 345All entries in the write request tracker are occupied. 346This is a measure of oversubscription in the write request tracker. 347.It Sy rnd_txreq_flits_replayed 348Number of replayed TXREQ flits. 349This is the measure of replay rate. 350.It Sy rnd_wrcancel_sent 351Number of write data cancels sent. 352This is the measure of write cancel rate. 353.It Sy rnd_s0_wdata_beats 354Number of WData beats, WVALID and WREADY, dispatched on port 0. 355This is a measure of write bandwidth on AXI port 0. 356.It Sy rnd_s1_wdata_beats 357Number of WData beats, WVALID and WREADY, dispatched on port 1. 358This is a measure of write bandwidth on AXI port 1. 359.It Sy rnd_s2_wdata_beats 360Number of WData beats, WVALID and WREADY, dispatched on port 2. 361This is a measure of write bandwidth on AXI port 2. 362.It Sy rnd_rrt_alloc 363Number of allocations in the read request tracker. 364This is a measure of read transaction count. 365.It Sy rnd_wrt_alloc 366Number of allocations in the write request tracker. 367This is a measure of write transaction count. 368.It Sy rnd_rdb_unord 369Number of cycles for which Read Data Buffer state machine is in Unordered Mode. 370.It Sy rnd_rdb_replay 371Number of cycles for which Read Data Buffer state machine is in Replay mode 372.It Sy rnd_rdb_hybrid 373Number of cycles for which Read Data Buffer state machine is in hybrid mode. 374Hybrid mode is where there is mix of ordered/unordered traffic. 375.It Sy rnd_rdb_ord 376Number of cycles for which Read Data Buffer state machine is in ordered Mode. 377.El 378.Ss RN-I node events 379.Bl -tag -width indent 380.It Sy rni_s0_rdata_beats 381Number of RData beats, RVALID and RREADY, dispatched on port 0. 382This is a measure of the read bandwidth, including CMO responses. 383.It Sy rni_s1_rdata_beats 384Number of RData beats, RVALID and RREADY, dispatched on port 1. 385This is a measure of the read bandwidth, including CMO responses. 386.It Sy rni_s2_rdata_beats 387Number of RData beats, RVALID and RREADY, dispatched on port 2. 388This is a measure of the read bandwidth, including CMO responses. 389.It Sy rni_rxdat_flits 390Number of RXDAT flits received. 391This is a measure of the true read data bandwidth, excluding CMOs. 392.It Sy rni_txdat_flits 393Number of TXDAT flits dispatched. 394This is a measure of the write bandwidth. 395.It Sy rni_txreq_flits_total 396Number of TXREQ flits dispatched. 397This is a measure of the total request bandwidth. 398.It Sy rni_txreq_flits_retried 399Number of retried TXREQ flits dispatched. 400This is a measure of the retry rate. 401.It Sy rni_rrt_occ_ovfl 402All entries in the read request tracker are occupied. 403This is a measure of oversubscription in the read request tracker. 404.It Sy rni_wrt_occ_ovfl 405All entries in the write request tracker are occupied. 406This is a measure of oversubscription in the write request tracker. 407.It Sy rni_txreq_flits_replayed 408Number of replayed TXREQ flits. 409This is the measure of replay rate. 410.It Sy rni_wrcancel_sent 411Number of write data cancels sent. 412This is the measure of write cancel rate 413.It Sy rni_s0_wdata_beats 414Number of WData beats, WVALID and WREADY, dispatched on port 0. 415This is a measure of write bandwidth on AXI port 0. 416.It Sy rni_s1_wdata_beats 417Number of WData beats, WVALID and WREADY, dispatched on port 1. 418This is a measure of write bandwidth on AXI port 1. 419.It Sy rni_s2_wdata_beats 420Number of WData beats, WVALID and WREADY, dispatched on port 2. 421This is a measure of write bandwidth on AXI port 2. 422.It Sy rni_rrt_alloc 423Number of allocations in the read request tracker. 424This is a measure of read transaction count. 425.It Sy rni_wrt_alloc 426Number of allocations in the write request tracker. 427This is a measure of write transaction count 428.It Sy rni_rdb_unord 429Number of cycles for which Read Data Buffer state machine is in Unordered Mode. 430.It Sy rni_rdb_replay 431Number of cycles for which Read Data Buffer state machine is in Replay mode 432.It Sy rni_rdb_hybrid 433Number of cycles for which Read Data Buffer state machine is in hybrid mode. 434Hybrid mode is where there is mix of ordered/unordered traffic. 435.It Sy rni_rdb_ord 436Number of cycles for which Read Data Buffer state machine is in ordered Mode. 437.El 438.Ss CXHA node events 439.Pq Note: CXHA events descriptions are guessed 440.Bl -tag -width indent 441.It Sy cxha_rddatbyp 442Number of Read DAT Bypass 443.It Sy cxha_chirsp_up_stall 444Number of CHI RSP up Stall 445.It Sy cxha_chidat_up_stall 446Number of CHI DAT up Stall 447.It Sy cxha_snppcrd_lnk0_stall 448Number of Snoop Pcrd Stall on Link 0 449.It Sy cxha_snppcrd_lnk1_stall 450Number of Snoop Pcrd Stall on Link 1 451.It Sy cxha_snppcrd_lnk2_stall 452Number of Snoop Pcrd Stall on Link 2 453.It Sy cxha_reqtrk_occ 454Request Tracker Occupancy 455.It Sy cxha_rdb_occ 456Read Data Buffer Occupancy 457.It Sy cxha_rdbbyp_occ 458Read Data Buffer Bypass Occupancy 459.It Sy cxha_wdb_occ 460Write Data Buffer Occupancy 461.It Sy cxha_snptrk_occ 462Snoop Tracker Occupancy 463.It Sy cxha_sdb_occ 464SDB Occupancy 465.It Sy cxha_snphaz_occ 466Snoop Hazard Occupancy 467.El 468.Ss CXRA node events 469.Bl -tag -width indent 470.It Sy cxra_req_trk_occ 471Request tracker occupancy 472.It Sy cxra_snp_trk_occ 473Snoop tracker occupancy 474.It Sy cxra_rd_dat_buf_occ 475Read data buffer occupancy 476.It Sy cxra_wr_dat_buf_occ 477Write data buffer occupancy 478.It Sy cxra_snp_sink_buf_occ 479Snoop sink buffer occupancy 480.It Sy cxra_snp_bcasts 481Snoop broadcasts 482.It Sy cxra_req_chains 483Number of request chains formed larger than one 484.It Sy cxra_req_chain_avg_len 485Average size of request chains, only for chain sizes larger than one 486.It Sy cxra_chi_rsp_upload_stalls 487Local RA upload stalls to CHI because of contention with HA 488.It Sy cxra_chi_dat_upload_stalls 489Local RA upload stalls to CHI because of contention with HA 490.It Sy cxra_dat_pcrd_stalls_lnk0 491Memory Data Request available, but no DAT Pcrd to send over CCIX per LinkEnd 0 492.It Sy cxra_dat_pcrd_stalls_lnk1 493Memory Data Request available, but no DAT Pcrd to send over CCIX per LinkEnd 1 494.It Sy cxra_dat_pcrd_stalls_lnk2 495Memory Data Request available, but no DAT Pcrd to send over CCIX per LinkEnd 2 496.It Sy cxra_req_pcrd_stalls_lnk0 497Memory Data Request available but no Req Pcrd to send over CCIX per LinkEnd 0 498.It Sy cxra_req_pcrd_stalls_lnk1 499Memory Data Request available but no Req Pcrd to send over CCIX per LinkEnd 1 500.It Sy cxra_req_pcrd_stalls_lnk2 501Memory Data Request available but no Req Pcrd to send over CCIX per LinkEnd 2 502.It Sy cxra_ext_rsp_stall 503CHI external RSP stall 504.It Sy cxra_ext_dat_stall 505CHI external DAT stall 506.El 507.Ss CXLA node events 508.Bl -tag -width indent 509.It Sy cxla_rx_tlp_link0 510RX TLP for Link 0 511.It Sy cxla_rx_tlp_link1 512RX TLP for Link 1 513.It Sy cxla_rx_tlp_link2 514RX TLP for Link 2 515.It Sy cxla_tx_tlp_link0 516TX TLP for Link 0 517.It Sy cxla_tx_tlp_link1 518TX TLP for Link 1 519.It Sy cxla_tx_tlp_link2 520TX TLP for Link 2 521.It Sy cxla_rx_cxs_link0 522RX CXS for Link 0 523.It Sy cxla_rx_cxs_link1 524RX CXS for Link 1 525.It Sy cxla_rx_cxs_link2 526RX CXS for Link 2 527.It Sy cxla_tx_cxs_link0 528TX CXS for Link 0 529.It Sy cxla_tx_cxs_link1 530TX CXS for Link 1 531.It Sy cxla_tx_cxs_link2 532TX CXS for Link 2 533.It Sy cxla_avg_rx_tlp_sz_dws 534Average RX TLP size in DWs 535.It Sy cxla_avg_tx_tlp_sz_dws 536Average TX TLP size in DWs 537.It Sy cxla_avg_rx_tlp_sz_ccix_msg 538Average RX TLP size in CCIX messages 539.It Sy cxla_avg_tx_tlp_sz_ccix_msg 540Average TX TLP size in CCIX messages 541.It Sy cxla_avg_sz_rx_cxs_dw_beat 542Average size of RX CXS in DWs within a beat 543.It Sy cxla_avg_sz_tx_cxs_dw_beat 544Average size of TX CXS in DWs within a beat 545.It Sy cxla_tx_cxs_link_credit_backpressure 546TX CXS link credit backpressure 547.It Sy cxla_rx_tlp_buffer_full 548RX TLP buffer full and backpressured 549.It Sy cxla_tx_tlp_buffer_full 550TX TLP buffer full and backpressured 551.It Sy cxla_avg_latency_process_rx_tlp 552Average latency to process an RX TLP 553.It Sy cxla_avg_latency_form_tx_tlp 554Average latency to form a TX TLP 555.El 556.Sh SEE ALSO 557.Xr pmc 3 , 558.Xr pmc.atom 3 , 559.Xr pmc.core 3 , 560.Xr pmc.core2 3 , 561.Xr pmc.corei7 3 , 562.Xr pmc.corei7uc 3 , 563.Xr pmc.iaf 3 , 564.Xr pmc.iaf 3 , 565.Xr pmc.k7 3 , 566.Xr pmc.k8 3 , 567.Xr pmc.soft 3 , 568.Xr pmc.tsc 3 , 569.Xr pmc.westmere 3 , 570.Xr pmc.westmereuc 3 , 571.Xr pmc_cpuinfo 3 , 572.Xr pmclog 3 , 573.Xr hwpmc 4 574.Sh HISTORY 575The 576.Nm pmc 577library first appeared in 578.Fx 6.0 . 579.br 580The 581.Nm pmc.cmn-600 582driver was added in 583.Fx 14.0 . 584.Sh AUTHORS 585.An -nosplit 586The 587.Lb libpmc 588library was written by 589.An Joseph Koshy Aq Mt jkoshy@FreeBSD.org , 590.An Oleksandr Rybalko Aq Mt ray@FreeBSD.org . 591.br 592The CMN-600 PMU driver was sponsored by ARM Ltd. 593This manual page was written by 594.An Oleksandr Rybalko Aq Mt ray@FreeBSD.org . 595