diff --git a/src/client/src/TSDBJNIConnector.c b/src/client/src/TSDBJNIConnector.c
index fb175618c0..e98acfc9a6 100644
--- a/src/client/src/TSDBJNIConnector.c
+++ b/src/client/src/TSDBJNIConnector.c
@@ -13,8 +13,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <stdbool.h>
-
 #include "os.h"
 #include "com_taosdata_jdbc_TSDBJNIConnector.h"
 #include "taos.h"
diff --git a/src/client/src/tscAst.c b/src/client/src/tscAst.c
index 845a9fd36d..fe0921c64d 100644
--- a/src/client/src/tscAst.c
+++ b/src/client/src/tscAst.c
@@ -13,12 +13,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <assert.h>
-#include <float.h>
-#include <math.h>
-#include <stdbool.h>
-#include <stdlib.h>
-
 #include "os.h"
 #include "taosmsg.h"
 #include "tast.h"
diff --git a/src/client/src/tscAsync.c b/src/client/src/tscAsync.c
index 6e0e1ae7c5..aad0295959 100644
--- a/src/client/src/tscAsync.c
+++ b/src/client/src/tscAsync.c
@@ -13,8 +13,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <stdio.h>
-#include <stdlib.h>
+#include "os.h"
 
 #include "tlog.h"
 #include "trpc.h"
diff --git a/src/client/src/tscCache.c b/src/client/src/tscCache.c
index 866b6e7dbc..f508857ce1 100644
--- a/src/client/src/tscCache.c
+++ b/src/client/src/tscCache.c
@@ -13,14 +13,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <assert.h>
-#include <pthread.h>
-#include <semaphore.h>
-#include <signal.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include "os.h"
 
 #include "tglobalcfg.h"
 #include "tlog.h"
diff --git a/src/client/src/tscFunctionImpl.c b/src/client/src/tscFunctionImpl.c
index 0f9be90412..35011a259b 100644
--- a/src/client/src/tscFunctionImpl.c
+++ b/src/client/src/tscFunctionImpl.c
@@ -15,16 +15,6 @@
 
 #pragma GCC diagnostic ignored "-Wincompatible-pointer-types"
 
-#include <assert.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <float.h>
-#include <math.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <wctype.h>
-
 #include "os.h"
 #include "taosmsg.h"
 #include "tast.h"
diff --git a/src/client/src/tscJoinProcess.c b/src/client/src/tscJoinProcess.c
index 4965498eff..dfeebc8c61 100644
--- a/src/client/src/tscJoinProcess.c
+++ b/src/client/src/tscJoinProcess.c
@@ -13,13 +13,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <fcntl.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <tsclient.h>
-#include <sys/stat.h>
-
 #include "os.h"
 #include "tcache.h"
 #include "tscJoinProcess.h"
diff --git a/src/client/src/tscLocal.c b/src/client/src/tscLocal.c
index 9afb74fec2..d217d09588 100644
--- a/src/client/src/tscLocal.c
+++ b/src/client/src/tscLocal.c
@@ -13,9 +13,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
+#include "os.h"
 #include "taosmsg.h"
 
 #include "tcache.h"
diff --git a/src/client/src/tscParseInsert.c b/src/client/src/tscParseInsert.c
index 37a32e9ebb..c8ce728de1 100644
--- a/src/client/src/tscParseInsert.c
+++ b/src/client/src/tscParseInsert.c
@@ -21,22 +21,8 @@
 #pragma GCC diagnostic ignored "-Woverflow"
 #pragma GCC diagnostic ignored "-Wunused-variable"
 
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <pthread.h>
-#include <sys/types.h>
-
-#include <assert.h>
-#include <float.h>
-#include <math.h>
-#include <string.h>
-#include <time.h>
-#include <wchar.h>
-
-#include "ihash.h"
 #include "os.h"
+#include "ihash.h"
 #include "tscSecondaryMerge.h"
 #include "tscUtil.h"
 #include "tschemautil.h"
diff --git a/src/client/src/tscPrepare.c b/src/client/src/tscPrepare.c
index e956d6159e..03f644ac36 100644
--- a/src/client/src/tscPrepare.c
+++ b/src/client/src/tscPrepare.c
@@ -13,9 +13,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-
 #include "taos.h"
 #include "tsclient.h"
 #include "tsql.h"
diff --git a/src/client/src/tscProfile.c b/src/client/src/tscProfile.c
index 770e61e278..7d74f62dcc 100644
--- a/src/client/src/tscProfile.c
+++ b/src/client/src/tscProfile.c
@@ -13,9 +13,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-
 #include "os.h"
 #include "tlog.h"
 #include "tsclient.h"
diff --git a/src/client/src/tscSQLParserImpl.c b/src/client/src/tscSQLParserImpl.c
index 7e1b4a7cf1..4fefe1665c 100644
--- a/src/client/src/tscSQLParserImpl.c
+++ b/src/client/src/tscSQLParserImpl.c
@@ -13,13 +13,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <string.h>
-#include <stdarg.h>
-
 #include "os.h"
 #include "tglobalcfg.h"
 #include "tsql.h"
diff --git a/src/client/src/tscSchemaUtil.c b/src/client/src/tscSchemaUtil.c
index 9728811ae7..5e50c27ab1 100644
--- a/src/client/src/tscSchemaUtil.c
+++ b/src/client/src/tscSchemaUtil.c
@@ -13,10 +13,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <stdbool.h>
-#include <stdint.h>
-#include <string.h>
-
 #include "os.h"
 #include "taosmsg.h"
 #include "tschemautil.h"
diff --git a/src/client/src/tscSecondaryMerge.c b/src/client/src/tscSecondaryMerge.c
index ac2638f635..398cd1cca6 100644
--- a/src/client/src/tscSecondaryMerge.c
+++ b/src/client/src/tscSecondaryMerge.c
@@ -13,13 +13,8 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <assert.h>
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <tsclient.h>
 
-#include "tlosertree.h"
+#include "os.h"
 #include "tlosertree.h"
 #include "tscSecondaryMerge.h"
 #include "tscUtil.h"
diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index 6edec3d477..49368e4d17 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -13,12 +13,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <assert.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <wchar.h>
-
 #include "os.h"
 #include "tcache.h"
 #include "trpc.h"
@@ -2848,7 +2842,7 @@ int tscBuildMetricMetaMsg(SSqlObj *pSql) {
   return msgLen;
 }
 
-int tscEstimateBuildHeartBeatMsgLength(SSqlObj *pSql) {
+int tscEstimateHeartBeatMsgLength(SSqlObj *pSql) {
   int      size = 0;
   STscObj *pObj = pSql->pTscObj;
 
@@ -2881,7 +2875,7 @@ int tscBuildHeartBeatMsg(SSqlObj *pSql) {
 
   pthread_mutex_lock(&pObj->mutex);
 
-  size = tscEstimateBuildHeartBeatMsgLength(pSql);
+  size = tscEstimateHeartBeatMsgLength(pSql);
   if (TSDB_CODE_SUCCESS != tscAllocPayload(pCmd, size)) {
     tscError("%p failed to malloc for heartbeat msg", pSql);
     return -1;
@@ -3613,7 +3607,7 @@ int tscRenewMeterMeta(SSqlObj *pSql, char *meterId) {
 
     code = tscDoGetMeterMeta(pSql, meterId, 0);  // todo ??
   } else {
-    tscTrace("%p metric query not update metric meta, numOfTags:%d, numOfCols:%d, uid:%d, addr:%p", pSql,
+    tscTrace("%p metric query not update metric meta, numOfTags:%d, numOfCols:%d, uid:%lld, addr:%p", pSql,
              pMeterMetaInfo->pMeterMeta->numOfTags, pCmd->numOfCols, pMeterMetaInfo->pMeterMeta->uid,
              pMeterMetaInfo->pMeterMeta);
   }
diff --git a/src/client/src/tscSql.c b/src/client/src/tscSql.c
index fa72b18d16..10eac0bb63 100644
--- a/src/client/src/tscSql.c
+++ b/src/client/src/tscSql.c
@@ -13,9 +13,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-
 #include "os.h"
 #include "tcache.h"
 #include "tlog.h"
diff --git a/src/client/src/tscSub.c b/src/client/src/tscSub.c
index dee8f02118..bcbcaba4c4 100644
--- a/src/client/src/tscSub.c
+++ b/src/client/src/tscSub.c
@@ -13,7 +13,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <signal.h>
+#include "os.h"
 
 #include "shash.h"
 #include "taos.h"
diff --git a/src/client/src/tscSyntaxtreefunction.c b/src/client/src/tscSyntaxtreefunction.c
index 00781919e4..bbd30c1fa9 100644
--- a/src/client/src/tscSyntaxtreefunction.c
+++ b/src/client/src/tscSyntaxtreefunction.c
@@ -13,10 +13,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <assert.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
+#include "os.h"
 
 #include "tscSyntaxtreefunction.h"
 #include "tsql.h"
diff --git a/src/client/src/tscSystem.c b/src/client/src/tscSystem.c
index 7ebd43cd19..708ceee405 100644
--- a/src/client/src/tscSystem.c
+++ b/src/client/src/tscSystem.c
@@ -13,15 +13,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <locale.h>
-#include <pthread.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <time.h>
-
 #include "os.h"
 #include "taosmsg.h"
 #include "tcache.h"
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index ec5c980612..5793656477 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -13,10 +13,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <assert.h>
-#include <math.h>
-#include <time.h>
-
 #include "os.h"
 #include "ihash.h"
 #include "taosmsg.h"
diff --git a/src/inc/ttimer.h b/src/inc/ttimer.h
index ddfd3f1fdf..5424881e26 100644
--- a/src/inc/ttimer.h
+++ b/src/inc/ttimer.h
@@ -41,7 +41,7 @@ extern int      taosTmrThreads;
     tprintf("TMR ", tmrDebugFlag, __VA_ARGS__); \
   } } while(0)
 
-#define MAX_NUM_OF_TMRCTL 32
+#define MAX_NUM_OF_TMRCTL 512
 #define MSECONDS_PER_TICK 5
 
 void *taosTmrInit(int maxTmr, int resoultion, int longest, const char *label);
diff --git a/src/os/linux/inc/os.h b/src/os/linux/inc/os.h
index 78065e6df0..ee65965a5b 100644
--- a/src/os/linux/inc/os.h
+++ b/src/os/linux/inc/os.h
@@ -1,17 +1,17 @@
 /*
-* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
-*
-* This program is free software: you can use, redistribute, and/or modify
-* it under the terms of the GNU Affero General Public License, version 3
-* or later ("AGPL"), as published by the Free Software Foundation.
-*
-* This program is distributed in the hope that it will be useful, but WITHOUT
-* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-* FITNESS FOR A PARTICULAR PURPOSE.
-*
-* You should have received a copy of the GNU Affero General Public License
-* along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #ifndef TDENGINE_PLATFORM_LINUX_H
 #define TDENGINE_PLATFORM_LINUX_H
@@ -25,10 +25,12 @@ extern "C" {
 
 #include <arpa/inet.h>
 #include <assert.h>
+#include <dirent.h>
 #include <endian.h>
 #include <float.h>
 #include <ifaddrs.h>
 #include <limits.h>
+#include <locale.h>
 #include <math.h>
 #include <netdb.h>
 #include <netinet/in.h>
@@ -37,7 +39,8 @@ extern "C" {
 #include <netinet/udp.h>
 #include <pthread.h>
 #include <pwd.h>
-#include <stdbool.h>
+#include <semaphore.h>
+#include <stdarg.h>
 #include <stdbool.h>
 #include <stdint.h>
 #include <string.h>
@@ -45,21 +48,19 @@ extern "C" {
 #include <sys/epoll.h>
 #include <sys/file.h>
 #include <sys/ioctl.h>
+#include <sys/mman.h>
 #include <sys/sendfile.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/syscall.h>
 #include <sys/time.h>
 #include <sys/uio.h>
-#include <sys/mman.h>
 #include <sys/un.h>
 #include <syslog.h>
 #include <termios.h>
 #include <unistd.h>
 #include <wchar.h>
 #include <wordexp.h>
-#include <locale.h>
-#include <dirent.h>
 
 #define taosCloseSocket(x) \
   {                        \
@@ -110,7 +111,7 @@ extern "C" {
 #define __sync_sub_and_fetch_ptr __sync_sub_and_fetch
 
 int32_t __sync_val_load_32(int32_t *ptr);
-void __sync_val_restore_32(int32_t *ptr, int32_t newval);
+void    __sync_val_restore_32(int32_t *ptr, int32_t newval);
 
 #define SWAP(a, b, c)      \
   do {                     \
@@ -168,9 +169,9 @@ bool taosSkipSocketCheck();
 int64_t str2int64(char *str);
 
 #define BUILDIN_CLZL(val) __builtin_clzl(val)
-#define BUILDIN_CLZ(val)  __builtin_clz(val)
+#define BUILDIN_CLZ(val) __builtin_clz(val)
 #define BUILDIN_CTZL(val) __builtin_ctzl(val)
-#define BUILDIN_CTZ(val)  __builtin_ctz(val)
+#define BUILDIN_CTZ(val) __builtin_ctz(val)
 
 #ifdef __cplusplus
 }
diff --git a/src/system/detail/src/mgmtMeter.c b/src/system/detail/src/mgmtMeter.c
index bccf9a06c8..2692e39131 100644
--- a/src/system/detail/src/mgmtMeter.c
+++ b/src/system/detail/src/mgmtMeter.c
@@ -833,6 +833,7 @@ static void removeMeterFromMetricIndex(STabObj *pMetric, STabObj *pMeter) {
     }
   }
 
+  tSkipListDestroyKey(&key);
   if (num != 0) {
     free(pRes);
   }
diff --git a/src/system/detail/src/vnodeQueryImpl.c b/src/system/detail/src/vnodeQueryImpl.c
index 187269d30b..9c0d7883a5 100644
--- a/src/system/detail/src/vnodeQueryImpl.c
+++ b/src/system/detail/src/vnodeQueryImpl.c
@@ -3436,9 +3436,18 @@ void pointInterpSupporterSetData(SQInfo *pQInfo, SPointInterpoSupporter *pPointI
     if (pQuery->interpoType == TSDB_INTERPO_SET_VALUE) {
       for (int32_t i = 0; i < pQuery->numOfOutputCols; ++i) {
         SQLFunctionCtx *pCtx = &pRuntimeEnv->pCtx[i];
+
+        // only the function of interp needs the corresponding information
+        if (pCtx->functionId != TSDB_FUNC_INTERP) {
+            continue;
+        }
+
+        pCtx->numOfParams = 4;
+
         SInterpInfo *   pInterpInfo = (SInterpInfo *)pRuntimeEnv->pCtx[i].aOutputBuf;
 
         pInterpInfo->pInterpDetail = calloc(1, sizeof(SInterpInfoDetail));
+
         SInterpInfoDetail *pInterpDetail = pInterpInfo->pInterpDetail;
 
         // for primary timestamp column, set the flag
diff --git a/src/system/detail/src/vnodeShell.c b/src/system/detail/src/vnodeShell.c
index 190c1d6ee6..353b2668ee 100644
--- a/src/system/detail/src/vnodeShell.c
+++ b/src/system/detail/src/vnodeShell.c
@@ -419,7 +419,7 @@ void vnodeExecuteRetrieveReq(SSchedMsg *pSched) {
 
   if (code == TSDB_CODE_SUCCESS) {
     pRsp->offset = htobe64(vnodeGetOffsetVal(pRetrieve->qhandle));
-    pRsp->useconds = ((SQInfo *)(pRetrieve->qhandle))->useconds;
+    pRsp->useconds = htobe64(((SQInfo *)(pRetrieve->qhandle))->useconds);
   } else {
     pRsp->offset = 0;
     pRsp->useconds = 0;