Commit 1ae70b64 authored by Sandipan Das's avatar Sandipan Das Committed by PrithivishS
Browse files

perf vendor events amd: Add Zen 5 metrics 

mainline inclusion
from mainline-v6.10-rc1
commit a9fe4ac7a3a25f0242406db7aa237850692fb29c
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/IAYOV8
CVE: NA

Reference: https://github.com/torvalds/linux/commit/a9fe4ac7a3a25f0242406db7aa237850692fb29c



--------------------------------

commit a9fe4ac7a3a25f0242406db7aa237850692fb29c upstream

Add metrics taken from Section 1.2 "Performance Measurement" of the
Performance Monitor Counters for AMD Family 1Ah Model 00h-0Fh Processors
document available at the link below.

The recommended metrics are sourced from Table 1 "Guidance for Common
Performance Statistics with Complex Event Selects".

The pipeline utilization metrics are sourced from Table 2 "Guidance
for Pipeline Utilization Analysis Statistics". These are useful for
finding performance bottlenecks by analyzing activity at different
stages of the pipeline. There are metric groups available for Level 1
and Level 2 analysis.

Reviewed-by: default avatarIan Rogers <irogers@google.com>
Signed-off-by: default avatarSandipan Das <sandipan.das@amd.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Link: https://bugzilla.kernel.org/attachment.cgi?id=305974
Link: https://lore.kernel.org/r/ee21ff77d89efa99997d3c2ebeeae22ddb6e7e12.1714717230.git.sandipan.das@amd.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarsuryasaimadhu <SaiMadhu.KoyyalaHariVenkata@amd.com>
Signed-off-by: default avatarPrithivishS <sprithiv@amd.com>
parent b7fbef00

tools/perf/pmu-events/arch/x86/amdzen5/pipeline.json

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[

  {

    "MetricName": "total_dispatch_slots",

    "BriefDescription": "Total dispatch slots (up to 8 instructions can be dispatched in each cycle).",

    "MetricExpr": "8 * ls_not_halted_cyc",

    "ScaleUnit": "1slots"

  },

  {

    "MetricName": "frontend_bound",

    "BriefDescription": "Percentage of dispatch slots that remained unused because the frontend did not supply enough instructions/ops.",

    "MetricExpr": "d_ratio(de_no_dispatch_per_slot.no_ops_from_frontend, total_dispatch_slots)",

    "MetricGroup": "PipelineL1",

    "ScaleUnit": "100%slots"

  },

  {

    "MetricName": "bad_speculation",

    "BriefDescription": "Percentage of dispatched ops that did not retire.",

    "MetricExpr": "d_ratio(de_src_op_disp.all - ex_ret_ops, total_dispatch_slots)",

    "MetricGroup": "PipelineL1",

    "ScaleUnit": "100%ops"

  },

  {

    "MetricName": "backend_bound",

    "BriefDescription": "Percentage of dispatch slots that remained unused because of backend stalls.",

    "MetricExpr": "d_ratio(de_no_dispatch_per_slot.backend_stalls, total_dispatch_slots)",

    "MetricGroup": "PipelineL1",

    "ScaleUnit": "100%slots"

  },

  {

    "MetricName": "smt_contention",

    "BriefDescription": "Percentage of dispatch slots that remained unused because the other thread was selected.",

    "MetricExpr": "d_ratio(de_no_dispatch_per_slot.smt_contention, total_dispatch_slots)",

    "MetricGroup": "PipelineL1",

    "ScaleUnit": "100%slots"

  },

  {

    "MetricName": "retiring",

    "BriefDescription": "Percentage of dispatch slots used by ops that retired.",

    "MetricExpr": "d_ratio(ex_ret_ops, total_dispatch_slots)",

    "MetricGroup": "PipelineL1",

    "ScaleUnit": "100%slots"

  },

  {

    "MetricName": "frontend_bound_by_latency",

    "BriefDescription": "Percentage of dispatch slots that remained unused because of a latency bottleneck in the frontend (such as instruction cache or TLB misses).",

    "MetricExpr": "d_ratio((8 * cpu@de_no_dispatch_per_slot.no_ops_from_frontend\\,cmask\\=0x8@), total_dispatch_slots)",

    "MetricGroup": "PipelineL2;frontend_bound_group",

    "ScaleUnit": "100%slots"

  },

  {

    "MetricName": "frontend_bound_by_bandwidth",

    "BriefDescription": "Percentage of dispatch slots that remained unused because of a bandwidth bottleneck in the frontend (such as decode or op cache fetch bandwidth).",

    "MetricExpr": "d_ratio(de_no_dispatch_per_slot.no_ops_from_frontend - (8 * cpu@de_no_dispatch_per_slot.no_ops_from_frontend\\,cmask\\=0x8@), total_dispatch_slots)",

    "MetricGroup": "PipelineL2;frontend_bound_group",

    "ScaleUnit": "100%slots"

  },

  {

    "MetricName": "bad_speculation_from_mispredicts",

    "BriefDescription": "Percentage of dispatched ops that were flushed due to branch mispredicts.",

    "MetricExpr": "d_ratio(bad_speculation * ex_ret_brn_misp, ex_ret_brn_misp + bp_redirects.resync)",

    "MetricGroup": "PipelineL2;bad_speculation_group",

    "ScaleUnit": "100%ops"

  },

  {

    "MetricName": "bad_speculation_from_pipeline_restarts",

    "BriefDescription": "Percentage of dispatched ops that were flushed due to pipeline restarts (resyncs).",

    "MetricExpr": "d_ratio(bad_speculation * bp_redirects.resync, ex_ret_brn_misp + bp_redirects.resync)",

    "MetricGroup": "PipelineL2;bad_speculation_group",

    "ScaleUnit": "100%ops"

  },

  {

    "MetricName": "backend_bound_by_memory",

    "BriefDescription": "Percentage of dispatch slots that remained unused because of stalls due to the memory subsystem.",

    "MetricExpr": "backend_bound * d_ratio(ex_no_retire.load_not_complete, ex_no_retire.not_complete)",

    "MetricGroup": "PipelineL2;backend_bound_group",

    "ScaleUnit": "100%slots"

  },

  {

    "MetricName": "backend_bound_by_cpu",

    "BriefDescription": "Percentage of dispatch slots that remained unused because of stalls not related to the memory subsystem.",

    "MetricExpr": "backend_bound * (1 - d_ratio(ex_no_retire.load_not_complete, ex_no_retire.not_complete))",

    "MetricGroup": "PipelineL2;backend_bound_group",

    "ScaleUnit": "100%slots"

  },

  {

    "MetricName": "retiring_from_fastpath",

    "BriefDescription": "Percentage of dispatch slots used by fastpath ops that retired.",

    "MetricExpr": "retiring * (1 - d_ratio(ex_ret_ucode_ops, ex_ret_ops))",

    "MetricGroup": "PipelineL2;retiring_group",

    "ScaleUnit": "100%slots"

  },

  {

    "MetricName": "retiring_from_microcode",

    "BriefDescription": "Percentage of dispatch slots used by microcode ops that retired.",

    "MetricExpr": "retiring * d_ratio(ex_ret_ucode_ops, ex_ret_ops)",

    "MetricGroup": "PipelineL2;retiring_group",

    "ScaleUnit": "100%slots"

  }

]

tools/perf/pmu-events/arch/x86/amdzen5/recommended.json

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[

  {

    "MetricName": "branch_misprediction_rate",

    "BriefDescription": "Execution-time branch misprediction rate (non-speculative).",

    "MetricExpr": "d_ratio(ex_ret_brn_misp, ex_ret_brn)",

    "MetricGroup": "branch_prediction",

    "ScaleUnit": "1per_branch"

  },

  {

    "MetricName": "all_data_cache_accesses_pti",

    "BriefDescription": "All data cache accesses per thousand instructions.",

    "MetricExpr": "ls_dispatch.all / instructions",

    "MetricGroup": "l1_dcache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "all_l2_cache_accesses_pti",

    "BriefDescription": "All L2 cache accesses per thousand instructions.",

    "MetricExpr": "(l2_request_g1.all_no_prefetch + l2_pf_hit_l2.l2_hwpf + l2_pf_miss_l2_hit_l3.l2_hwpf + l2_pf_miss_l2_l3.l2_hwpf) / instructions",

    "MetricGroup": "l2_cache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l2_cache_accesses_from_l1_ic_misses_pti",

    "BriefDescription": "L2 cache accesses from L1 instruction cache misses (including prefetch) per thousand instructions.",

    "MetricExpr": "l2_request_g1.cacheable_ic_read / instructions",

    "MetricGroup": "l2_cache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l2_cache_accesses_from_l1_dc_misses_pti",

    "BriefDescription": "L2 cache accesses from L1 data cache misses (including prefetch) per thousand instructions.",

    "MetricExpr": "l2_request_g1.all_dc / instructions",

    "MetricGroup": "l2_cache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l2_cache_accesses_from_l2_hwpf_pti",

    "BriefDescription": "L2 cache accesses from L2 cache hardware prefetcher per thousand instructions.",

    "MetricExpr": "(l2_pf_hit_l2.l1_dc_l2_hwpf + l2_pf_miss_l2_hit_l3.l1_dc_l2_hwpf + l2_pf_miss_l2_l3.l1_dc_l2_hwpf) / instructions",

    "MetricGroup": "l2_cache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "all_l2_cache_misses_pti",

    "BriefDescription": "All L2 cache misses per thousand instructions.",

    "MetricExpr": "(l2_cache_req_stat.ic_dc_miss_in_l2 + l2_pf_miss_l2_hit_l3.l2_hwpf + l2_pf_miss_l2_l3.l2_hwpf) / instructions",

    "MetricGroup": "l2_cache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l2_cache_misses_from_l1_ic_miss_pti",

    "BriefDescription": "L2 cache misses from L1 instruction cache misses per thousand instructions.",

    "MetricExpr": "l2_cache_req_stat.ic_fill_miss / instructions",

    "MetricGroup": "l2_cache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l2_cache_misses_from_l1_dc_miss_pti",

    "BriefDescription": "L2 cache misses from L1 data cache misses per thousand instructions.",

    "MetricExpr": "l2_cache_req_stat.ls_rd_blk_c / instructions",

    "MetricGroup": "l2_cache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l2_cache_misses_from_l2_hwpf_pti",

    "BriefDescription": "L2 cache misses from L2 cache hardware prefetcher per thousand instructions.",

    "MetricExpr": "(l2_pf_miss_l2_hit_l3.l1_dc_l2_hwpf + l2_pf_miss_l2_l3.l1_dc_l2_hwpf) / instructions",

    "MetricGroup": "l2_cache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "all_l2_cache_hits_pti",

    "BriefDescription": "All L2 cache hits per thousand instructions.",

    "MetricExpr": "(l2_cache_req_stat.ic_dc_hit_in_l2 + l2_pf_hit_l2.l2_hwpf) / instructions",

    "MetricGroup": "l2_cache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l2_cache_hits_from_l1_ic_miss_pti",

    "BriefDescription": "L2 cache hits from L1 instruction cache misses per thousand instructions.",

    "MetricExpr": "l2_cache_req_stat.ic_hit_in_l2 / instructions",

    "MetricGroup": "l2_cache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l2_cache_hits_from_l1_dc_miss_pti",

    "BriefDescription": "L2 cache hits from L1 data cache misses per thousand instructions.",

    "MetricExpr": "l2_cache_req_stat.dc_hit_in_l2 / instructions",

    "MetricGroup": "l2_cache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l2_cache_hits_from_l2_hwpf_pti",

    "BriefDescription": "L2 cache hits from L2 cache hardware prefetcher per thousand instructions.",

    "MetricExpr": "l2_pf_hit_l2.l1_dc_l2_hwpf / instructions",

    "MetricGroup": "l2_cache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l3_cache_accesses",

    "BriefDescription": "L3 cache accesses.",

    "MetricExpr": "l3_lookup_state.all_coherent_accesses_to_l3",

    "MetricGroup": "l3_cache"

  },

  {

    "MetricName": "l3_misses",

    "BriefDescription": "L3 misses (including cacheline state change requests).",

    "MetricExpr": "l3_lookup_state.l3_miss",

    "MetricGroup": "l3_cache"

  },

  {

    "MetricName": "l3_read_miss_latency",

    "BriefDescription": "Average L3 read miss latency (in core clocks).",

    "MetricExpr": "(l3_xi_sampled_latency.all * 10) / l3_xi_sampled_latency_requests.all",

    "MetricGroup": "l3_cache",

    "ScaleUnit": "1ns"

  },

  {

    "MetricName": "l3_read_miss_latency_for_local_dram",

    "BriefDescription": "Average L3 read miss latency (in core clocks) for local DRAM.",

    "MetricExpr": "(l3_xi_sampled_latency.dram_near * 10) / l3_xi_sampled_latency_requests.dram_near",

    "MetricGroup": "l3_cache",

    "ScaleUnit": "1ns"

  },

  {

    "MetricName": "l3_read_miss_latency_for_remote_dram",

    "BriefDescription": "Average L3 read miss latency (in core clocks) for remote DRAM.",

    "MetricExpr": "(l3_xi_sampled_latency.dram_far * 10) / l3_xi_sampled_latency_requests.dram_far",

    "MetricGroup": "l3_cache",

    "ScaleUnit": "1ns"

  },

  {

    "MetricName": "op_cache_fetch_miss_ratio",

    "BriefDescription": "Op cache miss ratio for all fetches.",

    "MetricExpr": "d_ratio(op_cache_hit_miss.op_cache_miss, op_cache_hit_miss.all_op_cache_accesses)",

    "ScaleUnit": "100%"

  },

  {

    "MetricName": "ic_fetch_miss_ratio",

    "BriefDescription": "Instruction cache miss ratio for all fetches. An instruction cache miss will not be counted by this metric if it is an OC hit.",

    "MetricExpr": "d_ratio(ic_tag_hit_miss.instruction_cache_miss, ic_tag_hit_miss.all_instruction_cache_accesses)",

    "ScaleUnit": "100%"

  },

  {

    "MetricName": "l1_data_cache_fills_from_memory_pti",

    "BriefDescription": "L1 data cache fills from DRAM or MMIO in any NUMA node per thousand instructions.",

    "MetricExpr": "ls_any_fills_from_sys.dram_io_all / instructions",

    "MetricGroup": "l1_dcache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l1_data_cache_fills_from_remote_node_pti",

    "BriefDescription": "L1 data cache fills from a different NUMA node per thousand instructions.",

    "MetricExpr": "ls_any_fills_from_sys.far_all / instructions",

    "MetricGroup": "l1_dcache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l1_data_cache_fills_from_same_ccx_pti",

    "BriefDescription": "L1 data cache fills from within the same CCX per thousand instructions.",

    "MetricExpr": "ls_any_fills_from_sys.local_all / instructions",

    "MetricGroup": "l1_dcache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l1_data_cache_fills_from_different_ccx_pti",

    "BriefDescription": "L1 data cache fills from another CCX cache in any NUMA node per thousand instructions.",

    "MetricExpr": "ls_any_fills_from_sys.remote_cache / instructions",

    "MetricGroup": "l1_dcache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "all_l1_data_cache_fills_pti",

    "BriefDescription": "All L1 data cache fills per thousand instructions.",

    "MetricExpr": "ls_any_fills_from_sys.all / instructions",

    "MetricGroup": "l1_dcache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l1_demand_data_cache_fills_from_local_l2_pti",

    "BriefDescription": "L1 demand data cache fills from local L2 cache per thousand instructions.",

    "MetricExpr": "ls_dmnd_fills_from_sys.local_l2 / instructions",

    "MetricGroup": "l1_dcache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l1_demand_data_cache_fills_from_same_ccx_pti",

    "BriefDescription": "L1 demand data cache fills from within the same CCX per thousand instructions.",

    "MetricExpr": "ls_dmnd_fills_from_sys.local_ccx / instructions",

    "MetricGroup": "l1_dcache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l1_demand_data_cache_fills_from_near_cache_pti",

    "BriefDescription": "L1 demand data cache fills from another CCX cache in the same NUMA node per thousand instructions.",

    "MetricExpr": "ls_dmnd_fills_from_sys.near_cache / instructions",

    "MetricGroup": "l1_dcache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l1_demand_data_cache_fills_from_near_memory_pti",

    "BriefDescription": "L1 demand data cache fills from DRAM or MMIO in the same NUMA node per thousand instructions.",

    "MetricExpr": "ls_dmnd_fills_from_sys.dram_io_near / instructions",

    "MetricGroup": "l1_dcache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l1_demand_data_cache_fills_from_far_cache_pti",

    "BriefDescription": "L1 demand data cache fills from another CCX cache in a different NUMA node per thousand instructions.",

    "MetricExpr": "ls_dmnd_fills_from_sys.far_cache / instructions",

    "MetricGroup": "l1_dcache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l1_demand_data_cache_fills_from_far_memory_pti",

    "BriefDescription": "L1 demand data cache fills from DRAM or MMIO in a different NUMA node per thousand instructions.",

    "MetricExpr": "ls_dmnd_fills_from_sys.dram_io_far / instructions",

    "MetricGroup": "l1_dcache",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l1_itlb_misses_pti",

    "BriefDescription": "L1 instruction TLB misses per thousand instructions.",

    "MetricExpr": "(bp_l1_tlb_miss_l2_tlb_hit + bp_l1_tlb_miss_l2_tlb_miss.all) / instructions",

    "MetricGroup": "tlb",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l2_itlb_misses_pti",

    "BriefDescription": "L2 instruction TLB misses and instruction page walks per thousand instructions.",

    "MetricExpr": "bp_l1_tlb_miss_l2_tlb_miss.all / instructions",

    "MetricGroup": "tlb",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l1_dtlb_misses_pti",

    "BriefDescription": "L1 data TLB misses per thousand instructions.",

    "MetricExpr": "ls_l1_d_tlb_miss.all / instructions",

    "MetricGroup": "tlb",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "l2_dtlb_misses_pti",

    "BriefDescription": "L2 data TLB misses and data page walks per thousand instructions.",

    "MetricExpr": "ls_l1_d_tlb_miss.all_l2_miss / instructions",

    "MetricGroup": "tlb",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "all_tlbs_flushed_pti",

    "BriefDescription": "All TLBs flushed per thousand instructions.",

    "MetricExpr": "ls_tlb_flush.all / instructions",

    "MetricGroup": "tlb",

    "ScaleUnit": "1e3per_1k_instr"

  },

  {

    "MetricName": "macro_ops_dispatched",

    "BriefDescription": "Macro-ops dispatched.",

    "MetricExpr": "de_src_op_disp.all",

    "MetricGroup": "decoder"

  },

  {

    "MetricName": "sse_avx_stalls",

    "BriefDescription": "Mixed SSE/AVX stalls.",

    "MetricExpr": "fp_disp_faults.sse_avx_all"

  },

  {

    "MetricName": "macro_ops_retired",

    "BriefDescription": "Macro-ops retired.",

    "MetricExpr": "ex_ret_ops"

  },

  {

    "MetricName": "umc_data_bus_utilization",

    "BriefDescription": "Memory controller data bus utilization.",

    "MetricExpr": "d_ratio(umc_data_slot_clks.all / 2, umc_mem_clk)",

    "MetricGroup": "memory_controller",

    "PerPkg": "1",

    "ScaleUnit": "100%"

  },

  {

    "MetricName": "umc_cas_cmd_rate",

    "BriefDescription": "Memory controller CAS command rate.",

    "MetricExpr": "d_ratio(umc_cas_cmd.all * 1000, umc_mem_clk)",

    "MetricGroup": "memory_controller",

    "PerPkg": "1",

    "ScaleUnit": "1per_memclk"

  },

  {

    "MetricName": "umc_cas_cmd_read_ratio",

    "BriefDescription": "Ratio of memory controller CAS commands for reads.",

    "MetricExpr": "d_ratio(umc_cas_cmd.rd, umc_cas_cmd.all)",

    "MetricGroup": "memory_controller",

    "PerPkg": "1",

    "ScaleUnit": "100%"

  },

  {

    "MetricName": "umc_cas_cmd_write_ratio",

    "BriefDescription": "Ratio of memory controller CAS commands for writes.",

    "MetricExpr": "d_ratio(umc_cas_cmd.wr, umc_cas_cmd.all)",

    "MetricGroup": "memory_controller",

    "PerPkg": "1",

    "ScaleUnit": "100%"

  },

  {

    "MetricName": "umc_mem_read_bandwidth",

    "BriefDescription": "Estimated memory read bandwidth.",

    "MetricExpr": "(umc_cas_cmd.rd * 64) / 1e6 / duration_time",

    "MetricGroup": "memory_controller",

    "PerPkg": "1",

    "ScaleUnit": "1MB/s"

  },

  {

    "MetricName": "umc_mem_write_bandwidth",

    "BriefDescription": "Estimated memory write bandwidth.",

    "MetricExpr": "(umc_cas_cmd.wr * 64) / 1e6 / duration_time",

    "MetricGroup": "memory_controller",

    "PerPkg": "1",

    "ScaleUnit": "1MB/s"

  },

  {

    "MetricName": "umc_mem_bandwidth",

    "BriefDescription": "Estimated combined memory bandwidth.",

    "MetricExpr": "(umc_cas_cmd.all * 64) / 1e6 / duration_time",

    "MetricGroup": "memory_controller",

    "PerPkg": "1",

    "ScaleUnit": "1MB/s"

  },

  {

    "MetricName": "umc_activate_cmd_rate",

    "BriefDescription": "Memory controller ACTIVATE command rate.",

    "MetricExpr": "d_ratio(umc_act_cmd.all * 1000, umc_mem_clk)",

    "MetricGroup": "memory_controller",

    "PerPkg": "1",

    "ScaleUnit": "1per_memclk"

  },

  {

    "MetricName": "umc_precharge_cmd_rate",

    "BriefDescription": "Memory controller PRECHARGE command rate.",

    "MetricExpr": "d_ratio(umc_pchg_cmd.all * 1000, umc_mem_clk)",

    "MetricGroup": "memory_controller",

    "PerPkg": "1",

    "ScaleUnit": "1per_memclk"

  }

]