Add pprof

Makefile

@@ -60,4 +60,9 @@ proto-gen:
 ghz-benchmark-id:
 	ghz --insecure --call proto.TigerBeetle.GetID -d {} -n 500000 --concurrency 20000 --connections=32 localhost:50051
 ghz-benchmark-transfers:
-	ghz --insecure --call proto.TigerBeetle.CreateTransfers --data-file transfers.json -n 500000 --concurrency 20000 --connections=64 localhost:50051
+	ghz --insecure --call proto.TigerBeetle.CreateTransfers --data-file transfers.json -n 500000 --concurrency 20000 --connections=64 localhost:50051
+
+pprof-build:
+	go build --tags pprof .
+pprof-open:
+	go tool pprof -http=:8081 http://localhost:6060/debug/pprof/profile\?seconds\=5

pprof.go

@@ -0,0 +1,16 @@
+//go:build pprof
+
+package main
+
+import (
+	"log/slog"
+	"net/http"
+	_ "net/http/pprof"
+)
+
+func init() {
+	slog.Info("pprof enabled")
+	go func() {
+		slog.Warn("pprof stopped", "err", http.ListenAndServe("localhost:6060", nil))
+	}()
+}