diff --git a/leveldb/readme.md b/leveldb/readme.md
index fd68753..0389620 100644
--- a/leveldb/readme.md
+++ b/leveldb/readme.md
@@ -14,24 +14,6 @@ dev.sh may help you:
 
     . ./dev.sh
 
-# Performance
-
-for better performance, I change some leveldb configurations to build:
-
-+ db/dbformat.h
-
-        // static const int kL0_SlowdownWritesTrigger = 8;
-        static const int kL0_SlowdownWritesTrigger = 16;
-
-        // static const int kL0_StopWritesTrigger = 12;
-        static const int kL0_StopWritesTrigger = 64;
-
-+ db/version_set.cc
-
-        //static const int kTargetFileSize = 2 * 1048576;
-        static const int kTargetFileSize = 32 * 1048576;
-
-        //static const int64_t kMaxGrandParentOverlapBytes = 10 * kTargetFileSize;
-        static const int64_t kMaxGrandParentOverlapBytes = 20 * kTargetFileSize;
-
+# Notice
 
+I have changed this package to [https://github.com/siddontang/go-leveldb](https://github.com/siddontang/go-leveldb) and will not maintain here anymore.
\ No newline at end of file