chore: uptime logic optimize

include/common/tglobal.h

@@ -90,6 +90,7 @@ extern bool    tsMndSkipGrant;
 
 // dnode
 extern int64_t tsDndStart;
+extern int64_t tsDndStartOsUptime;
 extern int64_t tsDndUpTime;
 
 // monitor

include/os/os.h

@@ -41,6 +41,7 @@ extern "C" {
 #include <sys/mman.h>
 #include <sys/param.h>
 #include <sys/shm.h>
+#include <sys/sysinfo.h>
 #include <sys/stat.h>
 #include <sys/statvfs.h>
 #include <sys/time.h>

include/os/osSysinfo.h

@@ -18,6 +18,10 @@
 
 #include "os.h"
 
+// #include <linux/unistd.h>       /* for _syscallX macros/related stuff */
+// #include <linux/kernel.h>       /* for struct sysinfo */
+
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -35,6 +39,7 @@ typedef struct {
 
 bool    taosCheckSystemIsLittleEnd();
 void    taosGetSystemInfo();
+int64_t taosGetOsUptime();
 int32_t taosGetEmail(char *email, int32_t maxLen);
 int32_t taosGetOsReleaseName(char *releaseName, char* sName, char* ver, int32_t maxLen);
 int32_t taosGetCpuInfo(char *cpuModel, int32_t maxLen, float *numOfCores);

source/dnode/mgmt/exe/dmMain.c

@@ -374,6 +374,7 @@ int mainWindows(int argc, char **argv) {
   dInfo("start to init service");
   dmSetSignalHandle();
   tsDndStart = taosGetTimestampMs();
+  tsDndStartOsUptime = taosGetOsUptime();
   int32_t code = dmRun();
   dInfo("shutting down the service");
 

source/dnode/mgmt/mgmt_dnode/src/dmWorker.c

@@ -24,6 +24,10 @@ static void *dmStatusThreadFp(void *param) {
 
   const static int16_t TRIM_FREQ = 30;
   int32_t              trimCount = 0;
+  int32_t              upTimeCount = 0;
+  int64_t              upTime = 0;
+  int64_t              thrdTime = 0;
+
   while (1) {
     taosMsleep(200);
     if (pMgmt->pData->dropped || pMgmt->pData->stopped) break;
@@ -39,10 +43,18 @@ static void *dmStatusThreadFp(void *param) {
       if (trimCount == 0) {
         taosMemoryTrim(0);
       }
-      cost = taosGetTimestampMs() - curTime;
+
+      if ((upTimeCount = (++upTimeCount & 7)) == 0) {  
+        upTime = (taosGetOsUptime() - tsDndStartOsUptime) * 1000;
+      }
     }
-    tsDndUpTime += 200;
-    if (cost > 0) tsDndUpTime += cost; // TODO: use /proc/uptime to replace the upTime calculation for linux
+
+    thrdTime += 200;
+    cost = taosGetTimestampMs() - curTime;
+    if (cost > 0) thrdTime += cost;
+    tsDndUpTime = upTime > thrdTime ? upTime : thrdTime;
+    printf("upTime:%" PRIi64 " thrdTime:%" PRIi64 " tsDndUpTime:%" PRIi64 " delta:%" PRIi64 "\n", upTime, thrdTime,
+           tsDndUpTime, upTime - thrdTime);
   }
 
   return NULL;

source/os/src/osSysinfo.c

@@ -961,6 +961,20 @@ char *taosGetCmdlineByPID(int pid) {
 #endif
 }
 
+int64_t taosGetOsUptime() {
+#ifdef WINDOWS
+  return 0;
+// #else
+// #elif defined(_TD_DARWIN_64)
+//   return 0;
+#else
+  struct sysinfo info;
+  if (0 == sysinfo(&info)) {
+    return info.uptime;
+  };
+#endif
+}
+
 void taosSetCoreDump(bool enable) {
   if (!enable) return;
 #ifdef WINDOWS