add race detector

1 files changed, 5 insertions, 1 deletions

diff --git a/internal/flamegraph/flamegraph.go b/internal/flamegraph/flamegraph.go
index 223389d..d5d7e96 100644
--- a/internal/flamegraph/flamegraph.go
+++ b/internal/flamegraph/flamegraph.go
@@ -21,7 +21,11 @@ func New() Flamegraph {
 		Ch:   make(chan *event.Pair, 4096),
 		Done: make(chan struct{}),
 	}
-	for range runtime.NumCPU() / 2 {
+	numWorkers := runtime.NumCPU() / 4
+	if numWorkers == 0 {
+		numWorkers = 1
+	}
+	for range numWorkers {
 		f.workers = append(f.workers, newWorker())
 	}
 	return f