diff --git a/fielddb/field_db.cpp b/fielddb/field_db.cpp
index 346c8c9..63c9f2a 100644
--- a/fielddb/field_db.cpp
+++ b/fielddb/field_db.cpp
@@ -125,17 +125,17 @@ Request *FieldDB::GetHandleInterval() {
 }
 
 Status FieldDB::HandleRequest(Request &req, const WriteOptions &op) {
-    uint64_t start_ = env_->NowMicros();
+    //uint64_t start_ = env_->NowMicros();
     MutexLock L(&mutex_);
     taskqueue_.push_back(&req);
     while(true){
-        uint64_t start_waiting = env_->NowMicros();
+        //uint64_t start_waiting = env_->NowMicros();
         while(req.isPending() || !req.done && &req != taskqueue_.front()) {
             req.cond_.Wait();
         }
-        waiting_elasped += env_->NowMicros() - start_waiting;
+        //waiting_elasped += env_->NowMicros() - start_waiting;
         if(req.done) {
-            elapsed += env_->NowMicros() - start_;
+            //elapsed += env_->NowMicros() - start_;
             count ++;
             // dumpStatistics();
             return req.s; //在返回时自动释放锁L
@@ -149,48 +149,48 @@ Status FieldDB::HandleRequest(Request &req, const WriteOptions &op) {
             {
                 //1. 构建各个Batch。构建的过程中要保证索引状态的一致性，需要上锁。
                 MutexLock iL(&index_mu);
-                uint64_t start_construct = env_->NowMicros();
+                //uint64_t start_construct = env_->NowMicros();
                 for(auto *req_ptr : taskqueue_) {
                     req_ptr->ConstructBatch(KVBatch, IndexBatch, MetaBatch, this, batchKeySet);
                     if(req_ptr == tail) break;
                 }
-                construct_elapsed += env_->NowMicros() - start_construct;
+                //construct_elapsed += env_->NowMicros() - start_construct;
             }
             //2. 首先写入meta，再并发写入index和kv，完成之后清除meta数据
             //此处可以放锁是因为写入的有序性可以通过队列来保证
             mutex_.Unlock();
-            uint64_t start_write = env_->NowMicros();
+            //uint64_t start_write = env_->NowMicros();
             if(MetaBatch.ApproximateSize() > 12) {
-                uint64_t start_meta = env_->NowMicros();
+                //uint64_t start_meta = env_->NowMicros();
                 status = metaDB_->Write(op, &MetaBatch);
-                write_meta_elapsed += env_->NowMicros() - start_meta;
+                //write_meta_elapsed += env_->NowMicros() - start_meta;
                 write_bytes += MetaBatch.ApproximateSize();
                 assert(status.ok());
             }
             //TODO:index的写入需要在另外一个线程中同时完成
             if(IndexBatch.ApproximateSize() > 12) {
-                uint64_t start_index = env_->NowMicros();
+                //uint64_t start_index = env_->NowMicros();
                 status = indexDB_->Write(op, &IndexBatch);
-                write_index_elapsed += env_->NowMicros() - start_index;
+                //write_index_elapsed += env_->NowMicros() - start_index;
                 write_bytes += IndexBatch.ApproximateSize();
                 assert(status.ok());
             }
             if(KVBatch.ApproximateSize() > 12) {
-                uint64_t start_kv = env_->NowMicros();
+                //uint64_t start_kv = env_->NowMicros();
                 status = kvDB_->Write(op, &KVBatch);
-                write_kv_elapsed += env_->NowMicros() - start_kv;
+                //write_kv_elapsed += env_->NowMicros() - start_kv;
                 write_bytes += KVBatch.ApproximateSize();
                 assert(status.ok());
             }
             //3. 将meta数据清除
             if(MetaBatch.ApproximateSize() > 12) {
-                uint64_t start_clean = env_->NowMicros();
+                //uint64_t start_clean = env_->NowMicros();
                 MetaCleaner cleaner;
                 cleaner.Collect(MetaBatch);
                 cleaner.CleanMetaBatch(metaDB_);
-                write_clean_elapsed += env_->NowMicros() - start_clean;
+                //write_clean_elapsed += env_->NowMicros() - start_clean;
             }
-            write_elapsed += env_->NowMicros() - start_write;
+            //write_elapsed += env_->NowMicros() - start_write;
             mutex_.Lock();
         } else {
             //对于创建和删除索引的请求，通过prepare完成索引状态的更新
@@ -263,9 +263,9 @@ Status FieldDB::Write(const WriteOptions &options, WriteBatch *updates) {
     //     dumpStatistics();
     //     return status;
     // }
-    uint64_t start_ = env_->NowMicros();
+    //uint64_t start_ = env_->NowMicros();
     BatchReq req(updates,&mutex_);
-    construct_BatchReq_init_elapsed += env_->NowMicros() - start_;
+    //construct_BatchReq_init_elapsed += env_->NowMicros() - start_;
     Status status = HandleRequest(req, options);
     return status;
 }
diff --git a/fielddb/request.cpp b/fielddb/request.cpp
index 9a53a6a..2fe585b 100644
--- a/fielddb/request.cpp
+++ b/fielddb/request.cpp
@@ -56,10 +56,9 @@ void FieldsReq::ConstructBatch(WriteBatch &KVBatch,WriteBatch &IndexBatch,
         batchKeySet.insert(Key);
     }
     std::string val_str;
-    Status s = Status::NotFound("test");
-    uint64_t start_ = DB->env_->NowMicros();
+    //uint64_t start_ = DB->env_->NowMicros();
     s = DB->kvDB_->Get(ReadOptions(), Key, &val_str);
-    DB->construct_FieldsReq_Read_elapsed += DB->env_->NowMicros() - start_;
+    //DB->construct_FieldsReq_Read_elapsed += DB->env_->NowMicros() - start_;
     // FieldArray *oldFields;
     FieldSliceArray oldFields;
     if (s.IsNotFound()){
@@ -409,12 +408,12 @@ void BatchReq::ConstructBatch(WriteBatch &KVBatch,WriteBatch &IndexBatch,
     WriteBatch Sub_KVBatch,Sub_IndexBatch,Sub_MetaBatch;
     SliceHashSet Sub_batchKeySet;
     //由于batch是有顺序的，根据我们现在的一个key只处理最开始的算法，这里需要反向迭代
-    uint64_t start_ = DB->env_->NowMicros();
+    //uint64_t start_ = DB->env_->NowMicros();
     for(auto subreq = sub_requests.rbegin(); subreq != sub_requests.rend(); subreq++ ) {
-        uint64_t start_sub = DB->env_->NowMicros();
+        //uint64_t start_sub = DB->env_->NowMicros();
         (*subreq)->ConstructBatch(Sub_KVBatch, Sub_IndexBatch, Sub_MetaBatch, DB, Sub_batchKeySet);
         // (*subreq)->ConstructBatch(KVBatch, IndexBatch, MetaBatch, DB, batchKeySet);
-        DB->construct_BatchReq_perSub_elapsed += DB->env_->NowMicros() - start_sub;
+        //DB->construct_BatchReq_perSub_elapsed += DB->env_->NowMicros() - start_sub;
         DB->count_Batch_Sub ++;
         //所有的对于pendreq的调用传入的参数被改成了this->parent，因此，对于subrequests来说，
         //pendreq的传参为对应的Batchreq，因此，此处判断batchreq是否pending可以得到subreq是否有冲突
@@ -422,7 +421,7 @@ void BatchReq::ConstructBatch(WriteBatch &KVBatch,WriteBatch &IndexBatch,
             return;
         }        
     }
-    DB->construct_BatchReq_Sub_elapsed += DB->env_->NowMicros() - start_;
+    //DB->construct_BatchReq_Sub_elapsed += DB->env_->NowMicros() - start_;
     if(Sub_KVBatch.ApproximateSize() > 12) {
         KVBatch.Append(Sub_KVBatch);
     }
@@ -433,7 +432,7 @@ void BatchReq::ConstructBatch(WriteBatch &KVBatch,WriteBatch &IndexBatch,
         MetaBatch.Append(Sub_MetaBatch);
     }
     batchKeySet.insert(Sub_batchKeySet.begin(),Sub_batchKeySet.end());
-    DB->construct_BatchReq_elapsed += DB->env_->NowMicros() - start_;
+    //DB->construct_BatchReq_elapsed += DB->env_->NowMicros() - start_;
 }
 
 
diff --git a/test/recover_test.cc b/test/recover_test.cc
index 3d42f80..d2b104d 100644
--- a/test/recover_test.cc
+++ b/test/recover_test.cc
@@ -80,6 +80,7 @@ TEST(TestParalRecover, Recover) {
     }
     GetOneField(db);
     checkDataInKVAndIndex(db);
+    //这里会出现两个数字，如果>1说明除了线程3插入的一条数据，其他线程也有数据在崩溃前被正确恢复了
 }
 
 int main(int argc, char** argv) {