diff --git a/crontab_test.go b/crontab_test.go
index bf6e2a5..7abe74f 100644
--- a/crontab_test.go
+++ b/crontab_test.go
@@ -5,10 +5,12 @@ import (
 	"fmt"
 	"log"
 	"regexp"
+	"runtime"
 	"strconv"
 	"strings"
 	"testing"
 	"time"
+	"unsafe"
 
 	"github.com/davecgh/go-spew/spew"
 )
@@ -232,6 +234,24 @@ func TestParseCrontab(t *testing.T) {
 
 	t.Error(NewCrontab(crontab))
 
+	PrintMemUsage()
+
 	ty := CreateTrieYear(2018)
-	log.Println(ty.Month[2].MaxDay)
+	log.Println(unsafe.Sizeof(ty))
+
+	PrintMemUsage()
+}
+
+func PrintMemUsage() {
+	var m runtime.MemStats
+	runtime.ReadMemStats(&m)
+	// For info on each, see: https://golang.org/pkg/runtime/#MemStats
+	fmt.Printf("Alloc = %v MiB", bToMb(m.Alloc))
+	fmt.Printf("\tTotalAlloc = %v MiB", bToMb(m.TotalAlloc))
+	fmt.Printf("\tSys = %v MiB", bToMb(m.Sys))
+	fmt.Printf("\tNumGC = %v\n", m.NumGC)
+}
+
+func bToMb(b uint64) uint64 {
+	return b / 1024 / 1024
 }