[PATCH v1 13/13] perf jevents: Add cycles breakdown metric for AMD

Ian Rogers
2024-02-29T00:16:14Z

Breakdown cycles to user, kernel and guest.

Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/pmu-events/amd_metrics.py | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)

diff --git a/tools/perf/pmu-events/amd_metrics.py b/tools/perf/pmu-events/amd_metrics.py
index 377ce413d051..2def2adf232e 100755
--- a/tools/perf/pmu-events/amd_metrics.py
+++ b/tools/perf/pmu-events/amd_metrics.py
@@ -572,6 +572,24 @@ def AmdUpc() -> Metric:
return Metric("upc", "Micro-ops retired per core cycle (higher is better)",
upc, "uops/cycle")

+
+def Cycles() -> MetricGroup:
+ cyc_k = Event("cycles:kHh")
+ cyc_g = Event("cycles:G")
+ cyc_u = Event("cycles:uH")
+ cyc = cyc_k + cyc_g + cyc_u
+
+ return MetricGroup("cycles", [
+ Metric("cycles_total", "Total number of cycles", cyc, "cycles"),
+ Metric("cycles_user", "User cycles as a percentage of all cycles",
+ d_ratio(cyc_u, cyc), "100%"),
+ Metric("cycles_kernel", "Kernel cycles as a percentage of all cycles",
+ d_ratio(cyc_k, cyc), "100%"),
+ Metric("cycles_guest", "Hypervisor guest cycles as a percentage of all cycles",
+ d_ratio(cyc_g, cyc), "100%"),
+ ], description = "cycles breakdown per privilege level (users, kernel, guest)")
+
+
def Idle() -> Metric:
cyc = Event("msr/mperf/")
tsc = Event("msr/tsc/")
@@ -628,6 +646,7 @@ all_metrics = MetricGroup("", [
AmdHwpf(),
AmdSwpf(),
AmdUpc(),
+ Cycles(),
Idle(),
Rapl(),
UncoreL3(),
--
2.44.0.278.ge034bb2e1d-goog