guard: fix perf relevant count reporting

lovitus · lovitus · commit c6997807cdd2 · 2026-03-30T00:50:09.000+08:00
diff --git a/internal/guard/monitor.go b/internal/guard/monitor.go
@@ -265,7 +265,7 @@ func (m *Monitor) scan(source string) {
 			groupDur.Truncate(time.Millisecond),
 			dur.Truncate(time.Millisecond),
 			procStats.ProcessesSeen,
-			len(procs),
+			procStats.RelevantCount,
 			len(groupsToScan),
 			killed,
 		)
diff --git a/internal/guard/processes.go b/internal/guard/processes.go
@@ -23,6 +23,7 @@ type procNameIndex map[string][]int32
 
 type ProcSnapshotStats struct {
 	ProcessesSeen int
+	RelevantCount int
 	List          time.Duration
 	Metadata      time.Duration
 	Index         time.Duration
@@ -63,6 +64,7 @@ func snapshotProcesses(commandWatchlist map[string]struct{}, groups []config.Gro
 			markSubtreeRelevant(root, children, relevant)
 		}
 	}
+	stats.RelevantCount = len(relevant)
 	stats.Relevant = time.Since(relevantStart)
 
 	rssStart := time.Now()

Original file line number	Diff line number	Diff line change
`@@ -265,7 +265,7 @@ func (m *Monitor) scan(source string) {`
`265`	`265`	`groupDur.Truncate(time.Millisecond),`
`266`	`266`	`dur.Truncate(time.Millisecond),`
`267`	`267`	`procStats.ProcessesSeen,`
`268`		`- len(procs),`
	`268`	`+ procStats.RelevantCount,`
`269`	`269`	`len(groupsToScan),`
`270`	`270`	`killed,`
`271`	`271`	`)`
Original file line number	Diff line number	Diff line change
`@@ -23,6 +23,7 @@ type procNameIndex map[string][]int32`
`23`	`23`
`24`	`24`	`type ProcSnapshotStats struct {`
`25`	`25`	`ProcessesSeen int`
	`26`	`+ RelevantCount int`
`26`	`27`	`List time.Duration`
`27`	`28`	`Metadata time.Duration`
`28`	`29`	`Index time.Duration`
`@@ -63,6 +64,7 @@ func snapshotProcesses(commandWatchlist map[string]struct{}, groups []config.Gro`
`63`	`64`	`markSubtreeRelevant(root, children, relevant)`
`64`	`65`	`}`
`65`	`66`	`}`
	`67`	`+ stats.RelevantCount = len(relevant)`
`66`	`68`	`stats.Relevant = time.Since(relevantStart)`
`67`	`69`
`68`	`70`	`rssStart := time.Now()`