Print first date then commit hash for benchmark results

benchmark/benchmark.go

@@ -31,7 +31,7 @@ func main() {
 	}
 
 	now := time.Now().Format(time.DateOnly)
-	resultFile := path.Join(".", "results", head+"_"+now+".txt")
+	resultFile := path.Join(".", "results", now+"_"+head+".txt")
 	log.Printf("Writing results to %s", resultFile)
 	outFile, err := os.Create(resultFile)
 	if err != nil {