pmc.cmn-600(3)

PMC Capabilities

CMN-600 PMU counters support the following capabilities:

Event Qualifiers

Event specifiers for these PMCs support the following common qualifiers:

nodeid=nodeid

Request counting for specific event at node nodeid.

occupancy=value

Filtering by occupancy type.

xpport=port

Count only events matched by port. (East, West, North, South, devport0, devport1 or numeric 0 to 5)

xpchannel=channel

Filter events by XP node channel. (REQ, RSP, SNP, DAT or 0, 1, 2, 3)

Class Name Prefix

These PMCs are named using a class name prefix of “CMN600_PMU_”.

Event Specifiers

The following list of PMC events are available:

DVM node events

dn_rxreq_dvmop

Number of DVMOP requests received. This includes all the sub-types include TLB invalidate, Branch predictor invalidate, instruction cache (physical and virtual) invalidate.

dn_rxreq_dvmsync

Number of DVM Sync requests received.

dn_rxreq_dvmop_vmid_filtered

Number of incoming DVMOP requests that are subject to VMID based filtering. This is a measure of the effectiveness of VMID based filtering and potential reduction in DVM snoops.

dn_rxreq_retried

Number of incoming requests that are retried. This is a measure of the retry rate.

dn_rxreq_trk_occupancy

Counts the tracker occupancy in DN. "occupancy": All, dvmop, dvmsync

dn_rxreq_tlbi_dvmop

Number of DVMOP TLB invalidate requests received.

dn_rxreq_bpi_dvmop

Number of DVMOP Branch predictor invalidate requests received.

dn_rxreq_pici_dvmop

Number of DVMOP physical instruction cache invalidate requests received.

dn_rxreq_vivi_dvmop

Number of DVMOP virtual instruction cache invalidate requests received.

dn_rxreq_dvmop_other_filtered

Number of DVM op requests to RNDs, BPI or PICI/VICI, that were filtered

dn_rxreq_snp_sent

Number of SNPs sent to RNs

dn_rxreq_snp_stalled

Number of SNPs stalled to RNs due to lack of Crds

dn_rxreq_trk_full

DVM tracker full counter

HN-F node events

hnf_cache_miss

Counts total cache misses in first lookup result (high priority)

hnf_slc_sf_cache_access

Counts number of cache accesses in first access (high priority)

hnf_cache_fill

Counts total allocations in HN SLC (all cache line allocations to SLC)

hnf_pocq_retry

Counts number of retried requests

hnf_pocq_reqs_recvd

Counts number of requests received by HN

hnf_sf_hit

Counts number of SF hits

hnf_sf_evictions

Counts number of SF eviction cache invalidations initiated

hnf_dir_snoops_sent

Counts number of directed snoops sent (not including SF back invalidation)

hnf_brd_snoops_sent

Counts number of multicast snoops sent (not including SF back invalidation)

hnf_slc_eviction

Counts number of SLC evictions (dirty only)

hnf_slc_fill_invalid_way

Counts number of SLC fills to an invalid way

hnf_mc_retries

Counts number of retried transactions by the MC

hnf_mc_reqs

Counts number of requests sent to MC

hnf_qos_hh_retry

Counts number of times a HighHigh priority request is protocol-retried at the HN-F

hnf_qos_pocq

Counts the POCQ occupancy in HN-F. Support argument "occupancy". Accept: All, Read, Write, Atomic, Stash. Default: All.

hnf_pocq_addrhaz

Counts number of POCQ address hazards upon allocation

hnf_pocq_atomic_addrhaz

Counts number of POCQ address hazards upon allocation for atomic operations

hnf_ld_st_swp_adq_full

Counts number of times ADQ is full for Ld/St/SWP type atomic operations while POCQ has pending operations

hnf_cmp_adq_full

Counts number of times ADQ is full for CMP type atomic operations while POCQ has pending operations

hnf_txdat_stall

Counts number of times HN-F has a pending TXDAT flit but no credits to upload

hnf_txrsp_stall

Counts number of times HN-F has a pending TXRSP flit but no credits to upload

hnf_seq_full

Counts number of times requests are replayed in SLC pipe due to SEQ being full

hnf_seq_hit

Counts number of times a request in SLC hit a pending SF eviction in SEQ

hnf_snp_sent

Counts number of snoops sent including directed, multicast, and SF back invalidation

hnf_sfbi_dir_snp_sent

Counts number of times directed snoops were sent due to SF back invalidation

hnf_sfbi_brd_snp_sent

Counts number of times multicast snoops were sent due to SF back invalidation

hnf_snp_sent_untrk

Counts number of times snooped were sent due to untracked RNF's

hnf_intv_dirty

Counts number of times SF back invalidation resulted in dirty line intervention from the RN

hnf_stash_snp_sent

Counts number of times stash snoops were sent

hnf_stash_data_pull

Counts number of times stash snoops resulted in data pull from the RN

hnf_snp_fwded

Counts number of times data forward snoops were sent

HN-I node events

hni_rrt_rd_occ_cnt_ovfl

RRT read occupancy count overflow

hni_rrt_wr_occ_cnt_ovfl

RRT write occupancy count overflow

hni_rdt_rd_occ_cnt_ovfl

RDT read occupancy count overflow

hni_rdt_wr_occ_cnt_ovfl

RDT write occupancy count overflow

hni_wdb_occ_cnt_ovfl

WDB occupancy count overflow

hni_rrt_rd_alloc

RRT read allocation

hni_rrt_wr_alloc

RRT write allocation

hni_rdt_rd_alloc

RDT read allocation

hni_rdt_wr_alloc

RDT write allocation

hni_wdb_alloc

WDB allocation

hni_txrsp_retryack

RETRYACK TXRSP flit sent

hni_arvalid_no_arready

ARVALID set without ARREADY event

hni_arready_no_arvalid

ARREADY set without ARVALID event

hni_awvalid_no_awready

AWVALID set without AWREADY event

hni_awready_no_awvalid

AWREADY set without AWVALID event

hni_wvalid_no_wready

WVALID set without WREADY event

hni_txdat_stall

TXDAT stall (TXDAT valid but no link credit available)

hni_nonpcie_serialization

Non-PCIe serialization event

hni_pcie_serialization

PCIe serialization event

XP node events

xp_txflit_valid

Number of flits transmitted on a specified port and CHI channel. This is a measure of the flit transfer bandwidth from an XP. Note: On device ports, this event also includes link flit transfers.

xp_txflit_stall

Number of cycles when a flit is stalled at an XP waiting for link credits at a specified port and CHI channel. This is a measure of the flit traffic congestion on the mesh and at the flit download ports.

xp_partial_dat_flit

Number of times when a partial DAT flit is uploaded onto the mesh from a RN-F_CHIA port. Partial DAT flit transmission occurs when XP is not able to combine two 128b DAT flits and send them over the 256b DAT channel. This can happen under 2 circumstances: 1. Only one 128b DAT flit is received within a transmission time window. 2. Two 128b DAT flits are received but they are not two halves of a
single 256b word.

SBSX node events

sbsx_rd_req

Read request

sbsx_wr_req

Write request

sbsx_cmo_req

CMO request

sbsx_txrsp_retryack

RETRYACK TXRSP flit sent

sbsx_txdat_flitv

TXDAT flit seen

sbsx_txrsp_flitv

TXRSP flit seen

sbsx_rd_req_trkr_occ_cnt_ovfl

Read request tracker occupancy count overflow

sbsx_wr_req_trkr_occ_cnt_ovfl

Write request tracker occupancy count overflow

sbsx_cmo_req_trkr_occ_cnt_ovfl

CMO request tracker occupancy count overflow

sbsx_wdb_occ_cnt_ovfl

WDB occupancy count overflow

sbsx_rd_axi_trkr_occ_cnt_ovfl

Read AXI pending tracker occupancy count overflow

sbsx_cmo_axi_trkr_occ_cnt_ovfl

CMO AXI pending tracker occupancy count overflow

sbsx_arvalid_no_arready

ARVALID set without ARREADY

sbsx_awvalid_no_awready

AWVALID set without AWREADY

sbsx_wvalid_no_wready

WVALID set without WREADY

sbsx_txdat_stall

TXDAT stall (TXDAT valid but no link credit available)

sbsx_txrsp_stall

TXRSP stall (TXRSP valid but no link credit available)

RN-D node events

rnd_s0_rdata_beats

Number of RData beats, RVALID and RREADY, dispatched on port 0. This is a measure of the read bandwidth, including CMO responses.

rnd_s1_rdata_beats

Number of RData beats, RVALID and RREADY, dispatched on port 1. This is a measure of the read bandwidth, including CMO responses.

rnd_s2_rdata_beats

Number of RData beats, RVALID and RREADY, dispatched on port 2. This is a measure of the read bandwidth, including CMO responses.

rnd_rxdat_flits

Number of RXDAT flits received. This is a measure of the true read data bandwidth, excluding CMOs.

rnd_txdat_flits

Number of TXDAT flits dispatched. This is a measure of the write bandwidth.

rnd_txreq_flits_total

Number of TXREQ flits dispatched. This is a measure of the total request bandwidth.

rnd_txreq_flits_retried

Number of retried TXREQ flits dispatched. This is a measure of the retry rate.

rnd_rrt_occ_ovfl

All entries in the read request tracker are occupied. This is a measure of oversubscription in the read request tracker.

rnd_wrt_occ_ovfl

All entries in the write request tracker are occupied. This is a measure of oversubscription in the write request tracker.

rnd_txreq_flits_replayed

Number of replayed TXREQ flits. This is the measure of replay rate.

rnd_wrcancel_sent

Number of write data cancels sent. This is the measure of write cancel rate.

rnd_s0_wdata_beats

Number of WData beats, WVALID and WREADY, dispatched on port 0. This is a measure of write bandwidth on AXI port 0.

rnd_s1_wdata_beats

Number of WData beats, WVALID and WREADY, dispatched on port 1. This is a measure of write bandwidth on AXI port 1.

rnd_s2_wdata_beats

Number of WData beats, WVALID and WREADY, dispatched on port 2. This is a measure of write bandwidth on AXI port 2.

rnd_rrt_alloc

Number of allocations in the read request tracker. This is a measure of read transaction count.

rnd_wrt_alloc

Number of allocations in the write request tracker. This is a measure of write transaction count.

rnd_rdb_unord

Number of cycles for which Read Data Buffer state machine is in Unordered Mode.

rnd_rdb_replay

Number of cycles for which Read Data Buffer state machine is in Replay mode

rnd_rdb_hybrid

Number of cycles for which Read Data Buffer state machine is in hybrid mode. Hybrid mode is where there is mix of ordered/unordered traffic.

rnd_rdb_ord

Number of cycles for which Read Data Buffer state machine is in ordered Mode.

RN-I node events

rni_s0_rdata_beats

Number of RData beats, RVALID and RREADY, dispatched on port 0. This is a measure of the read bandwidth, including CMO responses.

rni_s1_rdata_beats

Number of RData beats, RVALID and RREADY, dispatched on port 1. This is a measure of the read bandwidth, including CMO responses.

rni_s2_rdata_beats

Number of RData beats, RVALID and RREADY, dispatched on port 2. This is a measure of the read bandwidth, including CMO responses.

rni_rxdat_flits

Number of RXDAT flits received. This is a measure of the true read data bandwidth, excluding CMOs.

rni_txdat_flits

Number of TXDAT flits dispatched. This is a measure of the write bandwidth.

rni_txreq_flits_total

Number of TXREQ flits dispatched. This is a measure of the total request bandwidth.

rni_txreq_flits_retried

Number of retried TXREQ flits dispatched. This is a measure of the retry rate.

rni_rrt_occ_ovfl

All entries in the read request tracker are occupied. This is a measure of oversubscription in the read request tracker.

rni_wrt_occ_ovfl

All entries in the write request tracker are occupied. This is a measure of oversubscription in the write request tracker.

rni_txreq_flits_replayed

Number of replayed TXREQ flits. This is the measure of replay rate.

rni_wrcancel_sent

Number of write data cancels sent. This is the measure of write cancel rate

rni_s0_wdata_beats

Number of WData beats, WVALID and WREADY, dispatched on port 0. This is a measure of write bandwidth on AXI port 0.

rni_s1_wdata_beats

Number of WData beats, WVALID and WREADY, dispatched on port 1. This is a measure of write bandwidth on AXI port 1.

rni_s2_wdata_beats

Number of WData beats, WVALID and WREADY, dispatched on port 2. This is a measure of write bandwidth on AXI port 2.

rni_rrt_alloc

Number of allocations in the read request tracker. This is a measure of read transaction count.

rni_wrt_alloc

Number of allocations in the write request tracker. This is a measure of write transaction count

rni_rdb_unord

Number of cycles for which Read Data Buffer state machine is in Unordered Mode.

rni_rdb_replay

Number of cycles for which Read Data Buffer state machine is in Replay mode

rni_rdb_hybrid

Number of cycles for which Read Data Buffer state machine is in hybrid mode. Hybrid mode is where there is mix of ordered/unordered traffic.

rni_rdb_ord

Number of cycles for which Read Data Buffer state machine is in ordered Mode.

CXHA node events

(Note: CXHA events descriptions are guessed)

cxha_rddatbyp

Number of Read DAT Bypass

cxha_chirsp_up_stall

Number of CHI RSP up Stall

cxha_chidat_up_stall

Number of CHI DAT up Stall

cxha_snppcrd_lnk0_stall

Number of Snoop Pcrd Stall on Link 0

cxha_snppcrd_lnk1_stall

Number of Snoop Pcrd Stall on Link 1

cxha_snppcrd_lnk2_stall

Number of Snoop Pcrd Stall on Link 2

cxha_reqtrk_occ

Request Tracker Occupancy

cxha_rdb_occ

Read Data Buffer Occupancy

cxha_rdbbyp_occ

Read Data Buffer Bypass Occupancy

cxha_wdb_occ

Write Data Buffer Occupancy

cxha_snptrk_occ

Snoop Tracker Occupancy

cxha_sdb_occ

SDB Occupancy

cxha_snphaz_occ

Snoop Hazard Occupancy

CXRA node events

cxra_req_trk_occ

Request tracker occupancy

cxra_snp_trk_occ

Snoop tracker occupancy

cxra_rd_dat_buf_occ

Read data buffer occupancy

cxra_wr_dat_buf_occ

Write data buffer occupancy

cxra_snp_sink_buf_occ

Snoop sink buffer occupancy

cxra_snp_bcasts

Snoop broadcasts

cxra_req_chains

Number of request chains formed larger than one

cxra_req_chain_avg_len

Average size of request chains, only for chain sizes larger than one

cxra_chi_rsp_upload_stalls

Local RA upload stalls to CHI because of contention with HA

cxra_chi_dat_upload_stalls

Local RA upload stalls to CHI because of contention with HA

cxra_dat_pcrd_stalls_lnk0

Memory Data Request available, but no DAT Pcrd to send over CCIX per LinkEnd 0

cxra_dat_pcrd_stalls_lnk1

Memory Data Request available, but no DAT Pcrd to send over CCIX per LinkEnd 1

cxra_dat_pcrd_stalls_lnk2

Memory Data Request available, but no DAT Pcrd to send over CCIX per LinkEnd 2

cxra_req_pcrd_stalls_lnk0

Memory Data Request available but no Req Pcrd to send over CCIX per LinkEnd 0

cxra_req_pcrd_stalls_lnk1

Memory Data Request available but no Req Pcrd to send over CCIX per LinkEnd 1

cxra_req_pcrd_stalls_lnk2

Memory Data Request available but no Req Pcrd to send over CCIX per LinkEnd 2

cxra_ext_rsp_stall

CHI external RSP stall

cxra_ext_dat_stall

CHI external DAT stall

CXLA node events

cxla_rx_tlp_link0

RX TLP for Link 0

cxla_rx_tlp_link1

RX TLP for Link 1

cxla_rx_tlp_link2

RX TLP for Link 2

cxla_tx_tlp_link0

TX TLP for Link 0

cxla_tx_tlp_link1

TX TLP for Link 1

cxla_tx_tlp_link2

TX TLP for Link 2

cxla_rx_cxs_link0

RX CXS for Link 0

cxla_rx_cxs_link1

RX CXS for Link 1

cxla_rx_cxs_link2

RX CXS for Link 2

cxla_tx_cxs_link0

TX CXS for Link 0

cxla_tx_cxs_link1

TX CXS for Link 1

cxla_tx_cxs_link2

TX CXS for Link 2

cxla_avg_rx_tlp_sz_dws

Average RX TLP size in DWs

cxla_avg_tx_tlp_sz_dws

Average TX TLP size in DWs

cxla_avg_rx_tlp_sz_ccix_msg

Average RX TLP size in CCIX messages

cxla_avg_tx_tlp_sz_ccix_msg

Average TX TLP size in CCIX messages

cxla_avg_sz_rx_cxs_dw_beat

Average size of RX CXS in DWs within a beat

cxla_avg_sz_tx_cxs_dw_beat

Average size of TX CXS in DWs within a beat

cxla_tx_cxs_link_credit_backpressure

TX CXS link credit backpressure

cxla_rx_tlp_buffer_full

RX TLP buffer full and backpressured

cxla_tx_tlp_buffer_full

TX TLP buffer full and backpressured

cxla_avg_latency_process_rx_tlp

Average latency to process an RX TLP

cxla_avg_latency_form_tx_tlp

Average latency to form a TX TLP