diff --git a/debug.go b/debug.go
new file mode 100644
index 0000000..f10ac30
--- /dev/null
+++ b/debug.go
@@ -0,0 +1,23 @@
+// +build debug
+
+package main
+
+import (
+	"log"
+	"net/http"
+	_ "net/http/pprof"
+	"os"
+)
+
+func init() {
+	listen := os.Getenv("SYGGO_HTTP")
+	if listen == "" {
+		listen = "[::]:8082"
+	}
+	log.Printf("profiling is enabled, HTTP server is attached to %s\n", listen)
+	go func() {
+		if err := http.ListenAndServe(listen, nil); err != nil {
+			log.Fatalf("http failed: %v\n", err)
+		}
+	}()
+}