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Merged
harp-intel merged 5 commits into from
Dec 12, 2025
Merged

Add parsing for perf list JSON output to extract hardware and power events #586

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6771574
Add parsing for perf list JSON output to extract hardware and power e…
harp-intel Dec 11, 2025
964c2df
portable awk script
harp-intel Dec 12, 2025
42e1f24
Add parsing for perf list JSON output to extract hardware and power e…
harp-intel Dec 11, 2025
ca22e30
portable awk script
harp-intel Dec 12, 2025
1c5b1db
Merge branch 'trimotherevents' of github.com:intel/PerfSpect into tri…
harp-intel Dec 12, 2025
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44 changes: 40 additions & 4 deletions cmd/metrics/metadata.go
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Original file line number Diff line number Diff line change
Expand Up @@ -401,10 +401,46 @@ func getMetadataScripts(noRoot bool, noSystemSummary bool, numGPCounters int) (m
Superuser: !noRoot,
},
{
Name: "perf supported events",
ScriptTemplate: "perf list",
Superuser: !noRoot,
Depends: []string{"perf"},
Name: "perf supported events",
ScriptTemplate: `# Parse perf list JSON output to extract Hardware events and cstate/power events
perf list --json 2>/dev/null | awk '
BEGIN {
in_hardware_event = 0
event_name = ""
}

# Capture EventName
/"EventName":/ {
# Extract the value between quotes after "EventName":
line = $0
sub(/.*"EventName": "/, "", line)
sub(/".*/, "", line)
event_name = line
}

# Check if EventType is Hardware event
/"EventType": "Hardware event"/ {
in_hardware_event = 1
}

# At end of object (closing brace), check if we should print
/^}/ {
if (in_hardware_event ||
event_name ~ /^cstate_core\// ||
event_name ~ /^cstate_pkg\// ||
event_name ~ /^power\//) {
if (event_name != "") {
print event_name
}
}
# Reset for next object
in_hardware_event = 0
event_name = ""
}
' # end of awk
`,
Superuser: !noRoot,
Depends: []string{"perf"},
},
{
Name: "list uncore devices",
Expand Down
9 changes: 1 addition & 8 deletions cmd/metrics/summary.go
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,6 @@ import (
"os"
"path/filepath"
"perfspect/internal/cpus"
"regexp"
"slices"
"strconv"
texttemplate "text/template" // nosemgrep
Expand Down Expand Up @@ -628,13 +627,7 @@ func (mg *MetricGroup) loadHTMLTemplateValues(metadata Metadata, metricDefinitio
if err != nil {
return
}
// remove PerfSupportedEvents from json
re := regexp.MustCompile(`"PerfSupportedEvents":".*?",`)
jsonMetadataPurged := re.ReplaceAll(jsonMetadata, []byte(""))
// remove SystemSummaryFields from json
re = regexp.MustCompile(`,"SystemSummaryFields":\[\[.*?\]\]`)
jsonMetadataPurged = re.ReplaceAll(jsonMetadataPurged, []byte(""))
templateVals["METADATA"] = string(jsonMetadataPurged)
templateVals["METADATA"] = string(jsonMetadata)

// system info tab
jsonSystemInfo, err := json.Marshal(metadata.SystemSummaryFields)
Expand Down