diff --git a/g/database/gdb/gdb_unit_1_test.go b/g/database/gdb/gdb_unit_1_test.go
index 365671e85..bf132375c 100644
--- a/g/database/gdb/gdb_unit_1_test.go
+++ b/g/database/gdb/gdb_unit_1_test.go
@@ -33,6 +33,9 @@ func init() {
 		db = r
 	}
 	// 准备测试数据结构
+    if _, err := db.Exec("CREATE DATABASE IF NOT EXISTS `test` CHARACTER SET UTF8"); err != nil {
+        gtest.Fatal(err)
+    }
     if _, err := db.Exec("DROP TABLE `user`"); err != nil {
         gtest.Fatal(err)
     }
diff --git a/g/os/gcache/gcache_mem_cache.go b/g/os/gcache/gcache_mem_cache.go
index 4428324ac..ad0f245d3 100644
--- a/g/os/gcache/gcache_mem_cache.go
+++ b/g/os/gcache/gcache_mem_cache.go
@@ -63,8 +63,8 @@ func newMemCache(lruCap...int) *memCache {
         closed      : gtype.NewBool(),
     }
     if len(lruCap) > 0 {
-        c.lru = newMemCacheLru(c)
         c.cap = lruCap[0]
+        c.lru = newMemCacheLru(c)
     }
     return c
 }
diff --git a/g/os/grpool/grpool_testb2_test.go b/g/os/grpool/grpool_bench2_test.go
similarity index 100%
rename from g/os/grpool/grpool_testb2_test.go
rename to g/os/grpool/grpool_bench2_test.go
diff --git a/g/os/grpool/grpool_testb1_test.go b/g/os/grpool/grpool_bench_1_test.go
similarity index 100%
rename from g/os/grpool/grpool_testb1_test.go
rename to g/os/grpool/grpool_bench_1_test.go
diff --git a/g/os/grpool/grpool_test.go b/g/os/grpool/grpool_test.go
deleted file mode 100644
index 1107499c2..000000000
--- a/g/os/grpool/grpool_test.go
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright 2017 gf Author(https://gitee.com/johng/gf). All Rights Reserved.
-//
-// This Source Code Form is subject to the terms of the MIT License.
-// If a copy of the MIT was not distributed with this file,
-// You can obtain one at https://gitee.com/johng/gf.
-
-package grpool_test
-
-import (
-    "testing"
-    "runtime"
-    "fmt"
-)
-
-func increment() {
-    for i := 0; i < 100000; i++ {}
-}
-
-//func Test_GrpoolMemUsage(t *testing.T) {
-//    for i := 0; i < n; i++ {
-//        grpool.Add(increment)
-//    }
-//    mem := runtime.MemStats{}
-//    runtime.ReadMemStats(&mem)
-//    fmt.Println("mem usage:", mem.TotalAlloc/1024)
-//}
-
-func Test_GroroutineMemUsage(t *testing.T) {
-   for i := 0; i < n; i++ {
-       go increment()
-   }
-   mem := runtime.MemStats{}
-   runtime.ReadMemStats(&mem)
-   fmt.Println("mem usage:", mem.TotalAlloc/1024)
-}
\ No newline at end of file