Re: [PATCH v3] perf vendor events amd: Add Zen 4 memory controller events

From: Arnaldo Carvalho de Melo
Date: Wed Jan 03 2024 - 11:52:36 EST

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Em Wed, Nov 29, 2023 at 11:55:04AM +0530, Sandipan Das escreveu:
> Make the jevents parser aware of the Unified Memory Controller (UMC) PMU
> and add events taken from Section 8.2.1 "UMC Performance Monitor Events"
> of the Processor Programming Reference (PPR) for AMD Family 19h Model 11h
> processors. The events capture UMC command activity such as CAS, ACTIVATE,
> PRECHARGE etc. while the metrics derive data bus utilization and memory
> bandwidth out of these events.
>
> Acked-by: Ian Rogers <irogers@xxxxxxxxxx>
> Signed-off-by: Sandipan Das <sandipan.das@xxxxxxx>
> ---

Thanks, applied to perf-tools-next.

- Arnaldo

> v3:
> - Rebase on top of latest perf-tools-next branch.
>
> v2: https://lore.kernel.org/all/3a7245598265737ae4296fa6b0ab03a51708c502.1696425185.git.sandipan.das@xxxxxxx/
> v1: https://lore.kernel.org/all/a70b1ef6ab427b768f21401af280d235dd095412.1689748843.git.sandipan.das@xxxxxxx/
>
> ---
> .../arch/x86/amdzen4/memory-controller.json | 101 ++++++++++++++++++
> .../arch/x86/amdzen4/recommended.json | 84 +++++++++++++++
> tools/perf/pmu-events/jevents.py | 2 +
> 3 files changed, 187 insertions(+)
> create mode 100644 tools/perf/pmu-events/arch/x86/amdzen4/memory-controller.json
>
> diff --git a/tools/perf/pmu-events/arch/x86/amdzen4/memory-controller.json b/tools/perf/pmu-events/arch/x86/a.mdzen4/memory-controller.json
> new file mode 100644
> index 000000000000..55263e5e4f69
> --- /dev/null
> +++ b/tools/perf/pmu-events/arch/x86/amdzen4/memory-controller.json
> @@ -0,0 +1,101 @@
> +[
> + {
> + "EventName": "umc_mem_clk",
> + "PublicDescription": "Number of memory clock cycles.",
> + "EventCode": "0x00",
> + "PerPkg": "1",
> + "Unit": "UMCPMC"
> + },
> + {
> + "EventName": "umc_act_cmd.all",
> + "PublicDescription": "Number of ACTIVATE commands sent.",
> + "EventCode": "0x05",
> + "PerPkg": "1",
> + "Unit": "UMCPMC"
> + },
> + {
> + "EventName": "umc_act_cmd.rd",
> + "PublicDescription": "Number of ACTIVATE commands sent for reads.",
> + "EventCode": "0x05",
> + "RdWrMask": "0x1",
> + "PerPkg": "1",
> + "Unit": "UMCPMC"
> + },
> + {
> + "EventName": "umc_act_cmd.wr",
> + "PublicDescription": "Number of ACTIVATE commands sent for writes.",
> + "EventCode": "0x05",
> + "RdWrMask": "0x2",
> + "PerPkg": "1",
> + "Unit": "UMCPMC"
> + },
> + {
> + "EventName": "umc_pchg_cmd.all",
> + "PublicDescription": "Number of PRECHARGE commands sent.",
> + "EventCode": "0x06",
> + "PerPkg": "1",
> + "Unit": "UMCPMC"
> + },
> + {
> + "EventName": "umc_pchg_cmd.rd",
> + "PublicDescription": "Number of PRECHARGE commands sent for reads.",
> + "EventCode": "0x06",
> + "RdWrMask": "0x1",
> + "PerPkg": "1",
> + "Unit": "UMCPMC"
> + },
> + {
> + "EventName": "umc_pchg_cmd.wr",
> + "PublicDescription": "Number of PRECHARGE commands sent for writes.",
> + "EventCode": "0x06",
> + "RdWrMask": "0x2",
> + "PerPkg": "1",
> + "Unit": "UMCPMC"
> + },
> + {
> + "EventName": "umc_cas_cmd.all",
> + "PublicDescription": "Number of CAS commands sent.",
> + "EventCode": "0x0a",
> + "PerPkg": "1",
> + "Unit": "UMCPMC"
> + },
> + {
> + "EventName": "umc_cas_cmd.rd",
> + "PublicDescription": "Number of CAS commands sent for reads.",
> + "EventCode": "0x0a",
> + "RdWrMask": "0x1",
> + "PerPkg": "1",
> + "Unit": "UMCPMC"
> + },
> + {
> + "EventName": "umc_cas_cmd.wr",
> + "PublicDescription": "Number of CAS commands sent for writes.",
> + "EventCode": "0x0a",
> + "RdWrMask": "0x2",
> + "PerPkg": "1",
> + "Unit": "UMCPMC"
> + },
> + {
> + "EventName": "umc_data_slot_clks.all",
> + "PublicDescription": "Number of clocks used by the data bus.",
> + "EventCode": "0x14",
> + "PerPkg": "1",
> + "Unit": "UMCPMC"
> + },
> + {
> + "EventName": "umc_data_slot_clks.rd",
> + "PublicDescription": "Number of clocks used by the data bus for reads.",
> + "EventCode": "0x14",
> + "RdWrMask": "0x1",
> + "PerPkg": "1",
> + "Unit": "UMCPMC"
> + },
> + {
> + "EventName": "umc_data_slot_clks.wr",
> + "PublicDescription": "Number of clocks used by the data bus for writes.",
> + "EventCode": "0x14",
> + "RdWrMask": "0x2",
> + "PerPkg": "1",
> + "Unit": "UMCPMC"
> + }
> +]
> diff --git a/tools/perf/pmu-events/arch/x86/amdzen4/recommended.json b/tools/perf/pmu-events/arch/x86/amdzen4/recommended.json
> index 5e6a793acf7b..96e06401c6cb 100644
> --- a/tools/perf/pmu-events/arch/x86/amdzen4/recommended.json
> +++ b/tools/perf/pmu-events/arch/x86/amdzen4/recommended.json
> @@ -330,5 +330,89 @@
> "MetricGroup": "data_fabric",
> "PerPkg": "1",
> "ScaleUnit": "6.103515625e-5MiB"
> + },
> + {
> + "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"
> + },
> + {
> + "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_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_rate",
> + "BriefDescription": "Memory controller CAS command rate.",
> + "MetricExpr": "d_ratio(umc_cas_cmd.all * 1000, umc_mem_clk)",
> + "MetricGroup": "memory_controller",
> + "PerPkg": "1"
> + },
> + {
> + "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"
> + },
> + {
> + "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"
> }
> ]
> diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py
> index 0093c998cb6e..53ab050c8fa4 100755
> --- a/tools/perf/pmu-events/jevents.py
> +++ b/tools/perf/pmu-events/jevents.py
> @@ -286,6 +286,7 @@ class JsonEvent:
> 'imx8_ddr': 'imx8_ddr',
> 'L3PMC': 'amd_l3',
> 'DFPMC': 'amd_df',
> + 'UMCPMC': 'amd_umc',
> 'cpu_core': 'cpu_core',
> 'cpu_atom': 'cpu_atom',
> 'ali_drw': 'ali_drw',
> @@ -354,6 +355,7 @@ class JsonEvent:
> ('SampleAfterValue', 'period='),
> ('UMask', 'umask='),
> ('NodeType', 'type='),
> + ('RdWrMask', 'rdwrmask='),
> ]
> for key, value in event_fields:
> if key in jd and jd[key] != '0':
> --
> 2.34.1
>

--

- Arnaldo

Next message: Samuel Holland: "[PATCH] perf: RISC-V: Check standard event availability"
Previous message: Lukas Wunner: "Re: [PATCH v3 06/10] PCI: Cache PCIe device's Supported Speed Vector"
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