diff --git a/source/libs/function/src/tudf.c b/source/libs/function/src/tudf.c
index d0b3b191ad..0510b6cff5 100644
--- a/source/libs/function/src/tudf.c
+++ b/source/libs/function/src/tudf.c
@@ -127,7 +127,10 @@ static int32_t udfSpawnUdfd(SUdfdData *pData) {
   snprintf(dnodeIdEnvItem, 32, "%s=%d", "DNODE_ID", pData->dnodeId);
 
   float numCpuCores = 4;
-  taosGetCpuCores(&numCpuCores, false);
+  int32_t code = taosGetCpuCores(&numCpuCores, false);
+  if(code != 0) {
+    fnError("failed to get cpu cores, code:%d", code);
+  }
   numCpuCores = TMAX(numCpuCores, 2);
   snprintf(thrdPoolSizeEnvItem, 32, "%s=%d", "UV_THREADPOOL_SIZE", (int)numCpuCores * 2);
 
diff --git a/source/os/src/osDir.c b/source/os/src/osDir.c
index e06c1a6aac..04747cacd4 100644
--- a/source/os/src/osDir.c
+++ b/source/os/src/osDir.c
@@ -109,8 +109,8 @@ void taosRemoveDir(const char *dirname) {
     }
   }
 
-  (void)taosCloseDir(&pDir);
-  (void)rmdir(dirname);
+  TAOS_UNUSED(taosCloseDir(&pDir));
+  TAOS_UNUSED(rmdir(dirname));
 
   // printf("dir:%s is removed\n", dirname);
   return;
@@ -374,7 +374,7 @@ int32_t taosRealPath(char *dirname, char *realPath, int32_t maxlen) {
 bool taosIsDir(const char *dirname) {
   TdDirPtr pDir = taosOpenDir(dirname);
   if (pDir != NULL) {
-    (void)taosCloseDir(&pDir);
+    TAOS_SKIP_ERROR(taosCloseDir(&pDir));
     return true;
   }
   return false;
diff --git a/source/os/src/osSleep.c b/source/os/src/osSleep.c
index f72805b15d..67a621e8b7 100644
--- a/source/os/src/osSleep.c
+++ b/source/os/src/osSleep.c
@@ -37,7 +37,7 @@ void taosMsleep(int32_t ms) {
 #ifdef WINDOWS
   Sleep(ms);
 #else
-  (void)usleep(ms * 1000);
+  TAOS_SKIP_ERROR(usleep(ms * 1000));
 #endif
 }
 
@@ -49,10 +49,15 @@ void taosUsleep(int32_t us) {
   interval.QuadPart = (10 * us);
 
   timer = CreateWaitableTimer(NULL, TRUE, NULL);
-  SetWaitableTimer(timer, &interval, 0, NULL, NULL, 0);
-  WaitForSingleObject(timer, INFINITE);
-  CloseHandle(timer);
+  if (timer == NULL) {
+    return;
+  }
+  if (!SetWaitableTimer(timer, &interval, 0, NULL, NULL, 0)) {
+    return;
+  }
+  TAOS_SKIP_ERROR(WaitForSingleObject(timer, INFINITE));
+  TAOS_SKIP_ERROR(CloseHandle(timer));
 #else
-  (void)usleep(us);
+  TAOS_SKIP_ERROR(usleep(us));
 #endif
 }
diff --git a/source/os/src/osSysinfo.c b/source/os/src/osSysinfo.c
index 36b1d7b60d..fc6296bc04 100644
--- a/source/os/src/osSysinfo.c
+++ b/source/os/src/osSysinfo.c
@@ -191,10 +191,11 @@ static int32_t taosGetSysCpuInfo(SysCpuInfo *cpuInfo) {
          &cpuInfo->si, &cpuInfo->st, &cpuInfo->guest, &cpuInfo->guest_nice);
   if (EOF == code) {
     terrno = TAOS_SYSTEM_ERROR(errno);
+    TAOS_SKIP_ERROR(taosCloseFile(&pFile));
     return terrno;
   }
   
-  (void)taosCloseFile(&pFile);
+  TAOS_SKIP_ERROR(taosCloseFile(&pFile));
 #endif
 
   return 0;
@@ -263,9 +264,9 @@ bool taosCheckSystemIsLittleEnd() {
 
 void taosGetSystemInfo() {
 #ifdef WINDOWS
-  taosGetCpuCores(&tsNumOfCores, false);
-  taosGetTotalMemory(&tsTotalMemoryKB);
-  taosGetCpuUsage(NULL, NULL);
+  TAOS_SKIP_ERROR(taosGetCpuCores(&tsNumOfCores, false));
+  TAOS_SKIP_ERROR(taosGetTotalMemory(&tsTotalMemoryKB));
+  TAOS_SKIP_ERROR(taosGetCpuUsage(NULL, NULL));
 #elif defined(_TD_DARWIN_64)
   long physical_pages = sysconf(_SC_PHYS_PAGES);
   long page_size = sysconf(_SC_PAGESIZE);
@@ -274,10 +275,10 @@ void taosGetSystemInfo() {
   tsNumOfCores = sysconf(_SC_NPROCESSORS_ONLN);
 #else
   taosGetProcIOnfos();
-  (void)taosGetCpuCores(&tsNumOfCores, false);
-  (void)taosGetTotalMemory(&tsTotalMemoryKB);
-  (void)taosGetCpuUsage(NULL, NULL);
-  (void)taosGetCpuInstructions(&tsSSE42Supported, &tsAVXSupported, &tsAVX2Supported, &tsFMASupported, &tsAVX512Supported);
+  TAOS_SKIP_ERROR(taosGetCpuCores(&tsNumOfCores, false));
+  TAOS_SKIP_ERROR(taosGetTotalMemory(&tsTotalMemoryKB));
+  TAOS_SKIP_ERROR(taosGetCpuUsage(NULL, NULL));
+  TAOS_SKIP_ERROR(taosGetCpuInstructions(&tsSSE42Supported, &tsAVXSupported, &tsAVX2Supported, &tsFMASupported, &tsAVX512Supported));
 #endif
 }
 
@@ -313,11 +314,11 @@ int32_t taosGetEmail(char *email, int32_t maxLen) {
 
   if (taosReadFile(pFile, (void *)email, maxLen) < 0) {
     int32_t code = terrno;
-    (void)taosCloseFile(&pFile);
+    TAOS_SKIP_ERROR(taosCloseFile(&pFile));
     return code;
   }
 
-  (void)taosCloseFile(&pFile);
+  TAOS_SKIP_ERROR(taosCloseFile(&pFile));
   
   return 0;
 #endif
@@ -748,7 +749,7 @@ int32_t taosGetProcMemory(int64_t *usedKB) {
   char tmp[10];
   (void)sscanf(line, "%s %" PRId64, tmp, usedKB);
 
-  (void)taosCloseFile(&pFile);
+  TAOS_SKIP_ERROR(taosCloseFile(&pFile));
   
   return 0;
 #endif
@@ -1045,7 +1046,7 @@ int32_t taosGetSystemUUID(char *uid, int32_t uidlen) {
     return terrno;
   } else {
     len = taosReadFile(pFile, uid, uidlen);
-    (void)taosCloseFile(&pFile);
+    TAOS_SKIP_ERROR(taosCloseFile(&pFile));
     if (len < 0) {
       return len;
     }
@@ -1087,7 +1088,7 @@ char *taosGetCmdlineByPID(int pid) {
 
     cmdline[n] = 0;
 
-    (void)taosCloseFile(&pFile);
+    TAOS_SKIP_ERROR(taosCloseFile(&pFile));
   } else {
     cmdline[0] = 0;
   }
diff --git a/source/util/src/tlog.c b/source/util/src/tlog.c
index bd22a4e42b..7d905e843d 100644
--- a/source/util/src/tlog.c
+++ b/source/util/src/tlog.c
@@ -215,7 +215,10 @@ int32_t taosInitSlowLog() {
 
 int32_t taosInitLog(const char *logName, int32_t maxFiles, bool tsc) {
   if (atomic_val_compare_exchange_8(&tsLogInited, 0, 1) != 0) return 0;
-  TAOS_CHECK_RETURN(osUpdate());
+  int32_t code = osUpdate();
+  if (code != 0) {
+    uError("failed to update os info, reason:%s", tstrerror(code));
+  }
 
   TAOS_CHECK_RETURN(taosInitNormalLog(logName, maxFiles));
   if (tsc){