Add JSON metrics for Arm CMN. Currently just add part of CMN PMU
metrics which are general and compatible for any SoC with CMN-ANY.
Signed-off-by: Jing Zhang <[email protected]>
Reviewed-by: John Garry <[email protected]>
Reviewed-by: Ian Rogers <[email protected]>
Tested-by: Ian Rogers <[email protected]>
---
.../pmu-events/arch/arm64/arm/cmn/sys/metric.json | 74 ++++++++++++++++++++++
1 file changed, 74 insertions(+)
create mode 100644 tools/perf/pmu-events/arch/arm64/arm/cmn/sys/metric.json
diff --git a/tools/perf/pmu-events/arch/arm64/arm/cmn/sys/metric.json b/tools/perf/pmu-events/arch/arm64/arm/cmn/sys/metric.json
new file mode 100644
index 0000000..f7823bd
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/arm/cmn/sys/metric.json
@@ -0,0 +1,74 @@
+[
+ {
+ "MetricName": "slc_miss_rate",
+ "BriefDescription": "The system level cache miss rate.",
+ "MetricGroup": "cmn",
+ "MetricExpr": "hnf_cache_miss / hnf_slc_sf_cache_access",
+ "ScaleUnit": "100%",
+ "Unit": "arm_cmn",
+ "Compat": "(434|436|43c|43a).*"
+ },
+ {
+ "MetricName": "hnf_message_retry_rate",
+ "BriefDescription": "HN-F message retry rate indicates whether a lack of credits is causing the bottlenecks.",
+ "MetricGroup": "cmn",
+ "MetricExpr": "hnf_pocq_retry / hnf_pocq_reqs_recvd",
+ "ScaleUnit": "100%",
+ "Unit": "arm_cmn",
+ "Compat": "(434|436|43c|43a).*"
+ },
+ {
+ "MetricName": "sf_hit_rate",
+ "BriefDescription": "Snoop filter hit rate can be used to measure the snoop filter efficiency.",
+ "MetricGroup": "cmn",
+ "MetricExpr": "hnf_sf_hit / hnf_slc_sf_cache_access",
+ "ScaleUnit": "100%",
+ "Unit": "arm_cmn",
+ "Compat": "(434|436|43c|43a).*"
+ },
+ {
+ "MetricName": "mc_message_retry_rate",
+ "BriefDescription": "The memory controller request retries rate indicates whether the memory controller is the bottleneck.",
+ "MetricGroup": "cmn",
+ "MetricExpr": "hnf_mc_retries / hnf_mc_reqs",
+ "ScaleUnit": "100%",
+ "Unit": "arm_cmn",
+ "Compat": "(434|436|43c|43a).*"
+ },
+ {
+ "MetricName": "rni_actual_read_bandwidth.all",
+ "BriefDescription": "This event measure the actual bandwidth that RN-I bridge sends to the interconnect.",
+ "MetricGroup": "cmn",
+ "MetricExpr": "rnid_rxdat_flits * 32 / 1e6 / duration_time",
+ "ScaleUnit": "1MB/s",
+ "Unit": "arm_cmn",
+ "Compat": "(434|436|43c|43a).*"
+ },
+ {
+ "MetricName": "rni_actual_write_bandwidth.all",
+ "BriefDescription": "This event measures the actual write bandwidth at RN-I bridges.",
+ "MetricGroup": "cmn",
+ "MetricExpr": "rnid_txdat_flits * 32 / 1e6 / duration_time",
+ "ScaleUnit": "1MB/s",
+ "Unit": "arm_cmn",
+ "Compat": "(434|436|43c|43a).*"
+ },
+ {
+ "MetricName": "rni_retry_rate",
+ "BriefDescription": "RN-I bridge retry rate indicates whether the memory controller is the bottleneck.",
+ "MetricGroup": "cmn",
+ "MetricExpr": "rnid_txreq_flits_retried / rnid_txreq_flits_total",
+ "ScaleUnit": "100%",
+ "Unit": "arm_cmn",
+ "Compat": "(434|436|43c|43a).*"
+ },
+ {
+ "MetricName": "sbsx_actual_write_bandwidth.all",
+ "BriefDescription": "sbsx actual write bandwidth.",
+ "MetricGroup": "cmn",
+ "MetricExpr": "sbsx_txdat_flitv * 32 / 1e6 / duration_time",
+ "ScaleUnit": "1MB/s",
+ "Unit": "arm_cmn",
+ "Compat": "(434|436|43c|43a).*"
+ }
+]
--
1.8.3.1