diff --git a/src/kit/taospack/taospack.c b/src/kit/taospack/taospack.c
index 0fe2c82955dd4e7f5978a158bad90af18d012314..2c89f3dbc7275f9c83806ff1c761f207291607ac 100644
--- a/src/kit/taospack/taospack.c
+++ b/src/kit/taospack/taospack.c
@@ -144,7 +144,12 @@ bool testFile(const char* inFile, char algorithm){
   printf(" file %s have count=%d \n", inFile, cnt);
 
   cost_start();
-  int ret_len = tsCompressFloatLossy(input, input_len, cnt, output, output_len, algorithm, buff, buff_len);
+  int ret_len = 0;
+  if(algorithm == 2) 
+     ret_len = tsCompressFloat(input, input_len, cnt, output, output_len, algorithm, buff, buff_len);
+  else
+     ret_len = tsCompressFloatLossy(input, input_len, cnt, output, output_len, algorithm, buff, buff_len);
+
   if(ret_len == -1) {
     printf(" compress error.\n");
     return 0;
@@ -160,14 +165,21 @@ bool testFile(const char* inFile, char algorithm){
   //
   float* ft2 = (float*)malloc(input_len); 
   cost_start();
-  int code = tsDecompressFloatLossy(output, ret_len, cnt, (char*)ft2, input_len, algorithm, buff, buff_len);
+  int code = 0;
+
+  if(algorithm == 2) 
+     code = tsDecompressFloat(output, ret_len, cnt, (char*)ft2, input_len, algorithm, buff, buff_len);
+  else
+     code = tsDecompressFloatLossy(output, ret_len, cnt, (char*)ft2, input_len, algorithm, buff, buff_len);
+   
+
   double use_ms2 = cost_end("Decompress");
   printf(" Decompress return length=%d \n", code);
 
   // compare same
   float same_rate = check_same(floats, ft2, cnt);
 
-  printf("\n ------------------  count:%d TD <%s> ---------------- \n", cnt, algorithm == ONE_STAGE_COMP?"ONE":"TWO");
+  printf("\n ------------------  count:%d TD <%s> ---------------- \n", cnt, algorithm == 2?"TD":"SZ");
   printf("    Compress Rate ......... [%.0f%%] \n", rate);
   double speed1 = (cnt*sizeof(float)*1000/1024/1024)/use_ms1;
   printf("    Compress Time ......... [%.4fms] speed=%.1f MB/s\n", use_ms1, speed1);
@@ -184,61 +196,6 @@ bool testFile(const char* inFile, char algorithm){
 
   return true;
 }
-
-int memTest();
-int memTestDouble();
-void test_threadsafe(int thread_count);
-void test_threadsafe_double(int thread_count);
-
-//
-//  main
-//
-int main(int argc, char *argv[]) {
-  printf("welcome to use taospack tools v1.1. sizeof(STColumn) = %lu\n", sizeof(STColumn));
- 
-  tsCompressInit();
-  //
-  //tsCompressExit();
-  //return 1; 
-
-  if(argc == 3){
-    char algo = 0;
-    // t
-    if(strcmp(argv[1], "-tone") == 0 || strcmp(argv[1], "-t") == 0 ) {
-        algo = ONE_STAGE_COMP;
-    }
-    if(strcmp(argv[1], "-ttwo") == 0) {
-        algo = TWO_STAGE_COMP;
-    }
-
-    if(strcmp(argv[1], "-sf") == 0) {
-        test_threadsafe(atoi(argv[2]));
-        return 0;
-    }
-
-    if(strcmp(argv[1], "-sd") == 0) {
-        test_threadsafe_double(atoi(argv[2]));
-        return 0;
-    }
-    if(algo == 0){
-      printf(" no param -tone -ttwo \n");
-      return 0;
-    }
-     
-    bool ret = testFile(argv[2], algo);
-    printf(" test file %s. \n", ret ? "ok" : "err");
-    return 1;
-
-  } else if( argc == 2) {
-    if(strcmp(argv[1], "-mem") == 0) {
-      memTest();
-    } 
-  }
-
-  //memTest();
-  return 0;
-}
-
 //
 //  txt to binary file
 //
@@ -490,7 +447,11 @@ int memTest() {
 void* memTestThread(void* lparam) {
   //memTest();
   printf(" enter thread ....\n");
-  memTest();
+  for(int i=0; i< 1000000; i++)
+  {
+      memTest();
+      printf(" start i=%d .... \n", i);
+  }
   return NULL;
 }
 
@@ -519,7 +480,11 @@ void test_threadsafe(int thread_count){
 void* memTestThreadDouble(void* lparam) {
   //memTest();
   printf(" enter thread ....\n");
-  memTestDouble();
+  for(int i=0; i< 50000; i++)
+  {
+      memTest();
+      printf(" double start i=%d .... \n", i);
+  }
   return NULL;
 }
 
@@ -542,4 +507,59 @@ void test_threadsafe_double(int thread_count){
   
   printf("\n  ---- double test thread safe end. not same count=%d-----\n", notsame_cnt);
   
-}
\ No newline at end of file
+}
+
+
+
+
+
+
+//
+//   -----------------  main ----------------------
+//
+int main(int argc, char *argv[]) {
+  printf("welcome to use taospack tools v1.1. sizeof(STColumn) = %lu\n", sizeof(STColumn));
+ 
+  tsLossyInit();
+  //
+  //tsCompressExit();
+  //return 1; 
+
+  if(argc == 3){
+    char algo = 0;
+    // t
+    if(strcmp(argv[1], "-tone") == 0 || strcmp(argv[1], "-t") == 0 ) {
+        algo = ONE_STAGE_COMP;
+    }
+    if(strcmp(argv[1], "-ttwo") == 0) {
+        algo = TWO_STAGE_COMP;
+    }
+
+    if(strcmp(argv[1], "-sf") == 0) {
+        test_threadsafe(atoi(argv[2]));
+        return 0;
+    }
+
+    if(strcmp(argv[1], "-sd") == 0) {
+        test_threadsafe_double(atoi(argv[2]));
+        return 0;
+    }
+    if(algo == 0){
+      printf(" no param -tone -ttwo \n");
+      return 0;
+    }
+     
+    bool ret = testFile(argv[2], algo);
+    printf(" test file %s. \n", ret ? "ok" : "err");
+    return 1;
+
+  } else if( argc == 2) {
+    if(strcmp(argv[1], "-mem") == 0) {
+      memTest();
+    } 
+  }
+
+  //memTest();
+  return 0;
+}
+
diff --git a/src/tsdb/src/tsdbMain.c b/src/tsdb/src/tsdbMain.c
index 32748a5a3798f84ba495cd675112c5111750c595..8b2c81d567533f2d69b98d5c2947e4adaca603ab 100644
--- a/src/tsdb/src/tsdbMain.c
+++ b/src/tsdb/src/tsdbMain.c
@@ -68,7 +68,8 @@ STsdbRepo *tsdbOpenRepo(STsdbCfg *pCfg, STsdbAppH *pAppH) {
   terrno = TSDB_CODE_SUCCESS;
 
   // Compress Init
-  tsCompressInit();
+  //if(pCfg->compressLossy)
+  tsLossyInit();
 
   // Check and set default configurations
   if (tsdbCheckAndSetDefaultCfg(&config) < 0) {
@@ -143,9 +144,6 @@ int tsdbCloseRepo(STsdbRepo *repo, int toCommit) {
   tsdbFreeRepo(pRepo);
   tsdbDebug("vgId:%d repository is closed", vgId);
 
-  // compress exit
-  tsCompressExit();
-
   if (terrno != TSDB_CODE_SUCCESS) {
     return -1;
   } else {
diff --git a/src/util/inc/tscompression.h b/src/util/inc/tscompression.h
index 688b181ae94c3bab87053b732389ece8cc53849e..63da5c9cc5286bcc4553f415f992c2ba7f9603ae 100644
--- a/src/util/inc/tscompression.h
+++ b/src/util/inc/tscompression.h
@@ -54,8 +54,9 @@ int tsCompressDoubleLossyImp(const char * input, const int nelements, const char
 int tsDecompressDoubleLossyImp(const char * input, int compressedSize, const int nelements, const char * output);
 
 // init
-bool tsCompressInit();
-void tsCompressExit();
+bool tsLossyInit();
+
+
 
 static FORCE_INLINE int tsCompressTinyint(const char *const input, int inputSize, const int nelements, char *const output, int outputSize, char algorithm,
                       char *const buffer, int bufferSize) {
diff --git a/src/util/src/tcompression.c b/src/util/src/tcompression.c
index 07b534695fdf0630a26344027e17f10844948e75..300a06e9ac41e85fac57fcde67f21e28a889900f 100644
--- a/src/util/src/tcompression.c
+++ b/src/util/src/tcompression.c
@@ -891,18 +891,18 @@ int tsDecompressFloatImp(const char *const input, const int nelements, char *con
 //
 // ----------- global init and exit resource ------
 //
-int SZ_Init(const char *configFilePath);
-
-
-bool tsCompressInit() {
-  SZ_Init("./sz.config");
+int SZ_Init(const char *configFilePath);  //declare deps/sz/include/sz.h
+
+bool gLossyInited = false;
+bool tsLossyInit() {
+  // init compress init
+  if(!gLossyInited){
+    gLossyInited = true;
+    SZ_Init("./sz.config");
+  }
   return true;
 }
 
-void tsCompressExit(){
-  
-}
-
 //
 //   ----------  float double lossy  -----------
 //