Merge pull request #11418 from taosdata/feature/node

fix(cluster): get monitor info in multi-process mode

include/libs/monitor/monitor.h

@@ -78,6 +78,9 @@ typedef struct {
 typedef struct {
   float        uptime;  // day
   int8_t       has_mnode;
+  int8_t       has_qnode;
+  int8_t       has_snode;
+  int8_t       has_bnode;
   SMonDiskDesc logdir;
   SMonDiskDesc tempdir;
 } SMonDnodeInfo;
@@ -134,8 +137,8 @@ typedef struct {
 
 typedef struct {
   int32_t expire_time;
-  int32_t timeseries_used;
-  int32_t timeseries_total;
+  int64_t timeseries_used;
+  int64_t timeseries_total;
 } SMonGrantInfo;
 
 typedef struct {

include/os/osSysinfo.h

@@ -39,7 +39,7 @@ int32_t taosGetEmail(char *email, int32_t maxLen);
 int32_t taosGetOsReleaseName(char *releaseName, int32_t maxLen);
 int32_t taosGetCpuInfo(char *cpuModel, int32_t maxLen, float *numOfCores);
 int32_t taosGetCpuCores(float *numOfCores);
-int32_t taosGetCpuUsage(double *cpu_system, double *cpu_engine);
+void    taosGetCpuUsage(double *cpu_system, double *cpu_engine);
 int32_t taosGetTotalMemory(int64_t *totalKB);
 int32_t taosGetProcMemory(int64_t *usedKB);
 int32_t taosGetSysMemory(int64_t *usedKB);

source/dnode/mgmt/bm/bmHandle.c

@@ -58,7 +58,7 @@ int32_t bmProcessCreateReq(SMgmtWrapper *pWrapper, SNodeMsg *pMsg) {
     dError("failed to create bnode since %s, input:%d cur:%d", terrstr(), createReq.dnodeId, pDnode->dnodeId);
     return -1;
   } else {
-    return bmOpen(pWrapper);
+    return dndOpenNode(pWrapper);
   }
 }
 
@@ -77,6 +77,7 @@ int32_t bmProcessDropReq(SMgmtWrapper *pWrapper, SNodeMsg *pMsg) {
     dError("failed to drop bnode since %s", terrstr());
     return -1;
   } else {
+    // dndCloseNode(pWrapper);
     return bmDrop(pWrapper);
   }
 }

source/dnode/mgmt/dm/dmMonitor.c

@@ -25,11 +25,10 @@ static void dmGetMonitorBasicInfo(SDnode *pDnode, SMonBasicInfo *pInfo) {
 
 static void dmGetMonitorDnodeInfo(SDnode *pDnode, SMonDnodeInfo *pInfo) {
   pInfo->uptime = (taosGetTimestampMs() - pDnode->rebootTime) / (86400000.0f);
-  SMgmtWrapper *pWrapper = dndAcquireWrapper(pDnode, MNODE);
-  if (pWrapper != NULL) {
-    pInfo->has_mnode = pWrapper->required;
-    dndReleaseWrapper(pWrapper);
-  }
+  pInfo->has_mnode = pDnode->wrappers[MNODE].required;
+  pInfo->has_qnode = pDnode->wrappers[QNODE].required;
+  pInfo->has_snode = pDnode->wrappers[SNODE].required;
+  pInfo->has_bnode = pDnode->wrappers[BNODE].required;
   tstrncpy(pInfo->logdir.name, tsLogDir, sizeof(pInfo->logdir.name));
   pInfo->logdir.size = tsLogSpace.size;
   tstrncpy(pInfo->tempdir.name, tsTempDir, sizeof(pInfo->tempdir.name));
@@ -65,7 +64,7 @@ void dmSendMonitorReport(SDnode *pDnode) {
   bool getFromAPI = !tsMultiProcess;
   pWrapper = &pDnode->wrappers[MNODE];
   if (getFromAPI) {
-    if (dndMarkWrapper(pWrapper) != 0) {
+    if (dndMarkWrapper(pWrapper) == 0) {
       mmGetMonitorInfo(pWrapper, &mmInfo);
       dndReleaseWrapper(pWrapper);
     }
@@ -82,7 +81,7 @@ void dmSendMonitorReport(SDnode *pDnode) {
 
   pWrapper = &pDnode->wrappers[VNODES];
   if (getFromAPI) {
-    if (dndMarkWrapper(pWrapper) != 0) {
+    if (dndMarkWrapper(pWrapper) == 0) {
       vmGetMonitorInfo(pWrapper, &vmInfo);
       dndReleaseWrapper(pWrapper);
     }
@@ -99,7 +98,7 @@ void dmSendMonitorReport(SDnode *pDnode) {
 
   pWrapper = &pDnode->wrappers[QNODE];
   if (getFromAPI) {
-    if (dndMarkWrapper(pWrapper) != 0) {
+    if (dndMarkWrapper(pWrapper) == 0) {
       qmGetMonitorInfo(pWrapper, &qmInfo);
       dndReleaseWrapper(pWrapper);
     }
@@ -116,7 +115,7 @@ void dmSendMonitorReport(SDnode *pDnode) {
 
   pWrapper = &pDnode->wrappers[SNODE];
   if (getFromAPI) {
-    if (dndMarkWrapper(pWrapper) != 0) {
+    if (dndMarkWrapper(pWrapper) == 0) {
       smGetMonitorInfo(pWrapper, &smInfo);
       dndReleaseWrapper(pWrapper);
     }
@@ -133,7 +132,7 @@ void dmSendMonitorReport(SDnode *pDnode) {
 
   pWrapper = &pDnode->wrappers[BNODE];
   if (getFromAPI) {
-    if (dndMarkWrapper(pWrapper) != 0) {
+    if (dndMarkWrapper(pWrapper) == 0) {
       bmGetMonitorInfo(pWrapper, &bmInfo);
       dndReleaseWrapper(pWrapper);
     }

source/dnode/mgmt/inc/dndInt.h

@@ -126,6 +126,7 @@ typedef struct SDnode {
   int32_t      numOfDisks;
   uint16_t     serverPort;
   bool         dropped;
+  EProcType    procType;
   EDndType     ntype;
   EDndStatus   status;
   EDndEvent    event;

source/dnode/mgmt/main/dndExec.c

@@ -27,7 +27,81 @@ static bool dndRequireNode(SMgmtWrapper *pWrapper) {
   return required;
 }
 
-int32_t dndOpenNode(SMgmtWrapper *pWrapper) {
+static int32_t dndInitNodeProc(SMgmtWrapper *pWrapper) {
+  int32_t shmsize = tsMnodeShmSize;
+  if (pWrapper->ntype == VNODES) {
+    shmsize = tsVnodeShmSize;
+  } else if (pWrapper->ntype == QNODE) {
+    shmsize = tsQnodeShmSize;
+  } else if (pWrapper->ntype == SNODE) {
+    shmsize = tsSnodeShmSize;
+  } else if (pWrapper->ntype == MNODE) {
+    shmsize = tsMnodeShmSize;
+  } else if (pWrapper->ntype == BNODE) {
+    shmsize = tsBnodeShmSize;
+  } else {
+    return -1;
+  }
+
+  if (taosCreateShm(&pWrapper->shm, pWrapper->ntype, shmsize) != 0) {
+    terrno = TAOS_SYSTEM_ERROR(terrno);
+    dError("node:%s, failed to create shm size:%d since %s", pWrapper->name, shmsize, terrstr());
+    return -1;
+  }
+  dInfo("node:%s, shm:%d is created, size:%d", pWrapper->name, pWrapper->shm.id, shmsize);
+
+  SProcCfg cfg = dndGenProcCfg(pWrapper);
+  cfg.isChild = false;
+  pWrapper->procType = PROC_PARENT;
+  pWrapper->pProc = taosProcInit(&cfg);
+  if (pWrapper->pProc == NULL) {
+    dError("node:%s, failed to create proc since %s", pWrapper->name, terrstr());
+    return -1;
+  }
+
+  return 0;
+}
+
+static int32_t dndNewNodeProc(SMgmtWrapper *pWrapper, EDndType n) {
+  char  tstr[8] = {0};
+  char *args[6] = {0};
+  snprintf(tstr, sizeof(tstr), "%d", n);
+  args[1] = "-c";
+  args[2] = configDir;
+  args[3] = "-n";
+  args[4] = tstr;
+  args[5] = NULL;
+
+  int32_t pid = taosNewProc(args);
+  if (pid <= 0) {
+    terrno = TAOS_SYSTEM_ERROR(errno);
+    dError("node:%s, failed to exec in new process since %s", pWrapper->name, terrstr());
+    return -1;
+  }
+
+  pWrapper->procId = pid;
+  dInfo("node:%s, continue running in new process:%d", pWrapper->name, pid);
+  return 0;
+}
+
+static int32_t dndRunNodeProc(SMgmtWrapper *pWrapper) {
+  if (pWrapper->pDnode->ntype == NODE_MAX) {
+    dInfo("node:%s, should be started manually", pWrapper->name);
+  } else {
+    if (dndNewNodeProc(pWrapper, pWrapper->ntype) != 0) {
+      return -1;
+    }
+  }
+
+  if (taosProcRun(pWrapper->pProc) != 0) {
+    dError("node:%s, failed to run proc since %s", pWrapper->name, terrstr());
+    return -1;
+  }
+
+  return 0;
+}
+
+static int32_t dndOpenNodeImp(SMgmtWrapper *pWrapper) {
   if (taosMkDir(pWrapper->path) != 0) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     dError("node:%s, failed to create dir:%s since %s", pWrapper->name, pWrapper->path, terrstr());
@@ -44,7 +118,19 @@ int32_t dndOpenNode(SMgmtWrapper *pWrapper) {
   return 0;
 }
 
-void dndCloseNode(SMgmtWrapper *pWrapper) {
+int32_t dndOpenNode(SMgmtWrapper *pWrapper) {
+  SDnode *pDnode = pWrapper->pDnode;
+  if (pDnode->procType == PROC_SINGLE) {
+    return dndOpenNodeImp(pWrapper);
+  } else if (pDnode->procType == PROC_PARENT) {
+    if (dndInitNodeProc(pWrapper) != 0) return -1;
+    if (dndWriteShmFile(pDnode) != 0) return -1;
+    if (dndRunNodeProc(pWrapper) != 0) return -1;
+  }
+  return 0;
+}
+
+static void dndCloseNodeImp(SMgmtWrapper *pWrapper) {
   dDebug("node:%s, mgmt start to close", pWrapper->name);
   pWrapper->required = false;
   taosWLockLatch(&pWrapper->latch);
@@ -65,27 +151,17 @@ void dndCloseNode(SMgmtWrapper *pWrapper) {
   dDebug("node:%s, mgmt has been closed", pWrapper->name);
 }
 
-
-static int32_t dndNewProc(SMgmtWrapper *pWrapper, EDndType n) {
-  char  tstr[8] = {0};
-  char *args[6] = {0};
-  snprintf(tstr, sizeof(tstr), "%d", n);
-  args[1] = "-c";
-  args[2] = configDir;
-  args[3] = "-n";
-  args[4] = tstr;
-  args[5] = NULL;
-
-  int32_t pid = taosNewProc(args);
-  if (pid <= 0) {
-    terrno = TAOS_SYSTEM_ERROR(errno);
-    dError("node:%s, failed to exec in new process since %s", pWrapper->name, terrstr());
-    return -1;
+void dndCloseNode(SMgmtWrapper *pWrapper) {
+  if (pWrapper->pDnode->procType == PROC_PARENT) {
+    if (pWrapper->procId > 0 && taosProcExist(pWrapper->procId)) {
+      dInfo("node:%s, send kill signal to the child process:%d", pWrapper->name, pWrapper->procId);
+      taosKillProc(pWrapper->procId);
+      dInfo("node:%s, wait for child process:%d to stop", pWrapper->name, pWrapper->procId);
+      taosWaitProc(pWrapper->procId);
+      dInfo("node:%s, child process:%d is stopped", pWrapper->name, pWrapper->procId);
     }
-
-  pWrapper->procId = pid;
-  dInfo("node:%s, continue running in new process:%d", pWrapper->name, pid);
-  return 0;
+  }
+  dndCloseNodeImp(pWrapper);
 }
 
 static void dndProcessProcHandle(void *handle) {
@@ -96,13 +172,14 @@ static void dndProcessProcHandle(void *handle) {
 
 static int32_t dndRunInSingleProcess(SDnode *pDnode) {
   dInfo("dnode run in single process");
+  pDnode->procType = PROC_SINGLE;
 
   for (EDndType n = DNODE; n < NODE_MAX; ++n) {
     SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
     pWrapper->required = dndRequireNode(pWrapper);
     if (!pWrapper->required) continue;
 
-    if (dndOpenNode(pWrapper) != 0) {
+    if (dndOpenNodeImp(pWrapper) != 0) {
       dError("node:%s, failed to start since %s", pWrapper->name, terrstr());
       return -1;
     }
@@ -136,8 +213,10 @@ static int32_t dndRunInSingleProcess(SDnode *pDnode) {
 
 static int32_t dndRunInParentProcess(SDnode *pDnode) {
   dInfo("dnode run in parent process");
+  pDnode->procType = PROC_PARENT;
+
   SMgmtWrapper *pDWrapper = &pDnode->wrappers[DNODE];
-  if (dndOpenNode(pDWrapper) != 0) {
+  if (dndOpenNodeImp(pDWrapper) != 0) {
     dError("node:%s, failed to start since %s", pDWrapper->name, terrstr());
     return -1;
   }
@@ -146,36 +225,7 @@ static int32_t dndRunInParentProcess(SDnode *pDnode) {
     SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
     pWrapper->required = dndRequireNode(pWrapper);
     if (!pWrapper->required) continue;
-
-    int32_t shmsize = tsMnodeShmSize;
-    if (n == VNODES) {
-      shmsize = tsVnodeShmSize;
-    } else if (n == QNODE) {
-      shmsize = tsQnodeShmSize;
-    } else if (n == SNODE) {
-      shmsize = tsSnodeShmSize;
-    } else if (n == MNODE) {
-      shmsize = tsMnodeShmSize;
-    } else if (n == BNODE) {
-      shmsize = tsBnodeShmSize;
-    } else {
-    }
-
-    if (taosCreateShm(&pWrapper->shm, n, shmsize) != 0) {
-      terrno = TAOS_SYSTEM_ERROR(terrno);
-      dError("node:%s, failed to create shm size:%d since %s", pWrapper->name, shmsize, terrstr());
-      return -1;
-    }
-    dInfo("node:%s, shm:%d is created, size:%d", pWrapper->name, pWrapper->shm.id, shmsize);
-
-    SProcCfg cfg = dndGenProcCfg(pWrapper);
-    cfg.isChild = false;
-    pWrapper->procType = PROC_PARENT;
-    pWrapper->pProc = taosProcInit(&cfg);
-    if (pWrapper->pProc == NULL) {
-      dError("node:%s, failed to create proc since %s", pWrapper->name, terrstr());
-      return -1;
-    }
+    if (dndInitNodeProc(pWrapper) != 0) return -1;
   }
 
   if (dndWriteShmFile(pDnode) != 0) {
@@ -186,19 +236,7 @@ static int32_t dndRunInParentProcess(SDnode *pDnode) {
   for (EDndType n = DNODE + 1; n < NODE_MAX; ++n) {
     SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
     if (!pWrapper->required) continue;
-
-    if (pDnode->ntype == NODE_MAX) {
-      dInfo("node:%s, should be started manually", pWrapper->name);
-    } else {
-      if (dndNewProc(pWrapper, n) != 0) {
-        return -1;
-      }
-    }
-
-    if (taosProcRun(pWrapper->pProc) != 0) {
-      dError("node:%s, failed to run proc since %s", pWrapper->name, terrstr());
-      return -1;
-    }
+    if (dndRunNodeProc(pWrapper) != 0) return -1;
   }
 
   dndSetStatus(pDnode, DND_STAT_RUNNING);
@@ -239,7 +277,7 @@ static int32_t dndRunInParentProcess(SDnode *pDnode) {
         if (pWrapper->procId <= 0 || !taosProcExist(pWrapper->procId)) {
           dWarn("node:%s, process:%d is killed and needs to be restarted", pWrapper->name, pWrapper->procId);
           taosProcCloseHandles(pWrapper->pProc, dndProcessProcHandle);
-          dndNewProc(pWrapper, n);
+          dndNewNodeProc(pWrapper, n);
         }
       }
     }
@@ -253,6 +291,7 @@ static int32_t dndRunInParentProcess(SDnode *pDnode) {
 static int32_t dndRunInChildProcess(SDnode *pDnode) {
   SMgmtWrapper *pWrapper = &pDnode->wrappers[pDnode->ntype];
   dInfo("%s run in child process", pWrapper->name);
+  pDnode->procType = PROC_CHILD;
 
   pWrapper->required = dndRequireNode(pWrapper);
   if (!pWrapper->required) {
@@ -264,7 +303,7 @@ static int32_t dndRunInChildProcess(SDnode *pDnode) {
   tmsgSetDefaultMsgCb(&msgCb);
   pWrapper->procType = PROC_CHILD;
 
-  if (dndOpenNode(pWrapper) != 0) {
+  if (dndOpenNodeImp(pWrapper) != 0) {
     dError("node:%s, failed to start since %s", pWrapper->name, terrstr());
     return -1;
   }

source/dnode/mgmt/mm/mmHandle.c

@@ -80,6 +80,7 @@ int32_t mmProcessDropReq(SMgmtWrapper *pWrapper, SNodeMsg *pMsg) {
     dError("failed to drop mnode since %s", terrstr());
     return -1;
   } else {
+    // dndCloseNode(pWrapper);
     return mmDrop(pWrapper);
   }
 }

source/dnode/mgmt/qm/qmHandle.c

@@ -58,7 +58,7 @@ int32_t qmProcessCreateReq(SMgmtWrapper *pWrapper, SNodeMsg *pMsg) {
     dError("failed to create qnode since %s", terrstr());
     return -1;
   } else {
-    return qmOpen(pWrapper);
+    return dndOpenNode(pWrapper);
   }
 }
 
@@ -77,6 +77,7 @@ int32_t qmProcessDropReq(SMgmtWrapper *pWrapper, SNodeMsg *pMsg) {
     dError("failed to drop qnode since %s", terrstr());
     return -1;
   } else {
+    // dndCloseNode(pWrapper);
     return qmDrop(pWrapper);
   }
 }

source/dnode/mgmt/qm/qmWorker.c

@@ -32,7 +32,7 @@ static void qmProcessMonitorQueue(SQueueInfo *pInfo, SNodeMsg *pMsg) {
   SRpcMsg *pRpc = &pMsg->rpcMsg;
   int32_t  code = -1;
 
-  if (pMsg->rpcMsg.msgType == TDMT_MON_SM_INFO) {
+  if (pMsg->rpcMsg.msgType == TDMT_MON_QM_INFO) {
     code = qmProcessGetMonQmInfoReq(pMgmt->pWrapper, pMsg);
   } else {
     terrno = TSDB_CODE_MSG_NOT_PROCESSED;

source/dnode/mgmt/sm/smHandle.c

@@ -58,7 +58,7 @@ int32_t smProcessCreateReq(SMgmtWrapper *pWrapper, SNodeMsg *pMsg) {
     dError("failed to create snode since %s", terrstr());
     return -1;
   } else {
-    return smOpen(pWrapper);
+    return dndOpenNode(pWrapper);
   }
 }
 
@@ -78,6 +78,7 @@ int32_t smProcessDropReq(SMgmtWrapper *pWrapper, SNodeMsg *pMsg) {
     return -1;
   } else {
     return smDrop(pWrapper);
+    // return dndCloseNode(pWrapper);
   }
 }
 

source/libs/monitor/src/monMain.c

@@ -375,6 +375,9 @@ static void monGenDnodeJson(SMonInfo *pMonitor) {
   tjsonAddDoubleToObject(pJson, "vnodes_num", pStat->totalVnodes);
   tjsonAddDoubleToObject(pJson, "masters", pStat->masterNum);
   tjsonAddDoubleToObject(pJson, "has_mnode", pInfo->has_mnode);
+  tjsonAddDoubleToObject(pJson, "has_qnode", pInfo->has_qnode);
+  tjsonAddDoubleToObject(pJson, "has_snode", pInfo->has_snode);
+  tjsonAddDoubleToObject(pJson, "has_bnode", pInfo->has_bnode);
 }
 
 static void monGenDiskJson(SMonInfo *pMonitor) {
@@ -530,7 +533,7 @@ void monSendReport() {
   if (pCont != NULL) {
     EHttpCompFlag flag = tsMonitor.cfg.comp ? HTTP_GZIP : HTTP_FLAT;
     if (taosSendHttpReport(tsMonitor.cfg.server, tsMonitor.cfg.port, pCont, strlen(pCont), flag) != 0) {
-      uError("failed to send monitor msg since %s", terrstr());
+      uError("failed to send monitor msg");
     }
     taosMemoryFree(pCont);
   }

source/libs/monitor/src/monMsg.c

@@ -194,9 +194,9 @@ int32_t tDecodeSMonVgroupInfo(SCoder *decoder, SMonVgroupInfo *pInfo) {
     if (tDecodeCStrTo(decoder, desc.database_name) < 0) return -1;
     if (tDecodeCStrTo(decoder, desc.status) < 0) return -1;
     for (int32_t j = 0; j < TSDB_MAX_REPLICA; ++j) {
-      SMonVnodeDesc vdesc = {0};
-      if (tDecodeI32(decoder, &vdesc.dnode_id) < 0) return -1;
-      if (tDecodeCStrTo(decoder, vdesc.vnode_role) < 0) return -1;
+      SMonVnodeDesc *pVDesc = &desc.vnodes[j];
+      if (tDecodeI32(decoder, &pVDesc->dnode_id) < 0) return -1;
+      if (tDecodeCStrTo(decoder, pVDesc->vnode_role) < 0) return -1;
     }
     taosArrayPush(pInfo->vgroups, &desc);
   }
@@ -205,15 +205,15 @@ int32_t tDecodeSMonVgroupInfo(SCoder *decoder, SMonVgroupInfo *pInfo) {
 
 int32_t tEncodeSMonGrantInfo(SCoder *encoder, const SMonGrantInfo *pInfo) {
   if (tEncodeI32(encoder, pInfo->expire_time) < 0) return -1;
-  if (tEncodeI32(encoder, pInfo->timeseries_used) < 0) return -1;
-  if (tEncodeI32(encoder, pInfo->timeseries_total) < 0) return -1;
+  if (tEncodeI64(encoder, pInfo->timeseries_used) < 0) return -1;
+  if (tEncodeI64(encoder, pInfo->timeseries_total) < 0) return -1;
   return 0;
 }
 
 int32_t tDecodeSMonGrantInfo(SCoder *decoder, SMonGrantInfo *pInfo) {
   if (tDecodeI32(decoder, &pInfo->expire_time) < 0) return -1;
-  if (tDecodeI32(decoder, &pInfo->timeseries_used) < 0) return -1;
-  if (tDecodeI32(decoder, &pInfo->timeseries_total) < 0) return -1;
+  if (tDecodeI64(decoder, &pInfo->timeseries_used) < 0) return -1;
+  if (tDecodeI64(decoder, &pInfo->timeseries_total) < 0) return -1;
   return 0;
 }
 

source/libs/transport/src/thttp.c

@@ -164,8 +164,8 @@ int32_t taosSendHttpReport(const char* server, uint16_t port, char* pCont, int32
   wb[1] = uv_buf_init((char*)pCont, contLen);
 
   connect->data = wb;
-  uv_tcp_connect(connect, &socket_tcp, (const struct sockaddr*)&dest, clientConnCb);
   terrno = 0;
+  uv_tcp_connect(connect, &socket_tcp, (const struct sockaddr*)&dest, clientConnCb);
   uv_run(loop, UV_RUN_DEFAULT);
   uv_loop_close(loop);
   taosMemoryFree(connect);

source/os/src/osProc.c

@@ -24,7 +24,7 @@ int32_t taosNewProc(char **args) {
   if (pid == 0) {
     args[0] = tsProcPath;
     // close(STDIN_FILENO);
-    close(STDOUT_FILENO);
+    // close(STDOUT_FILENO);
     // close(STDERR_FILENO);
     return execvp(tsProcPath, args);
   } else {

source/os/src/osSysinfo.c

@@ -369,53 +369,33 @@ int32_t taosGetCpuCores(float *numOfCores) {
 #endif
 }
 
-int32_t taosGetCpuUsage(double *cpu_system, double *cpu_engine) {
-#if defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32)
-  *cpu_system = 0;
-  *cpu_engine = 0;
-  return 0;
-#elif defined(_TD_DARWIN_64)
+void taosGetCpuUsage(double *cpu_system, double *cpu_engine) {
+  static int64_t lastSysUsed = 0;
+  static int64_t lastSysTotal = 0;
+  static int64_t lastProcTotal = 0;
+  static int64_t curSysUsed = 0;
+  static int64_t curSysTotal = 0;
+  static int64_t curProcTotal = 0;
+
   *cpu_system = 0;
   *cpu_engine = 0;
-  return 0;
-#else
-  static uint64_t lastSysUsed = 0;
-  static uint64_t lastSysTotal = 0;
-  static uint64_t lastProcTotal = 0;
-
-  SysCpuInfo  sysCpu;
-  ProcCpuInfo procCpu;
-  if (taosGetSysCpuInfo(&sysCpu) != 0) {
-    return -1;
-  }
-  if (taosGetProcCpuInfo(&procCpu) != 0) {
-    return -1;
-  }
-
-  uint64_t curSysUsed = sysCpu.user + sysCpu.nice + sysCpu.system;
-  uint64_t curSysTotal = curSysUsed + sysCpu.idle;
-  uint64_t curProcTotal = procCpu.utime + procCpu.stime + procCpu.cutime + procCpu.cstime;
-
-  if (lastSysUsed == 0 || lastSysTotal == 0 || lastProcTotal == 0) {
-    lastSysUsed = curSysUsed > 1 ? curSysUsed : 1;
-    lastSysTotal = curSysTotal > 1 ? curSysTotal : 1;
-    lastProcTotal = curProcTotal > 1 ? curProcTotal : 1;
-    return -1;
-  }
 
-  if (curSysTotal == lastSysTotal) {
-    return -1;
-  }
+  SysCpuInfo  sysCpu = {0};
+  ProcCpuInfo procCpu = {0};
+  if (taosGetSysCpuInfo(&sysCpu) == 0 && taosGetProcCpuInfo(&procCpu) == 0) {
+    curSysUsed = sysCpu.user + sysCpu.nice + sysCpu.system;
+    curSysTotal = curSysUsed + sysCpu.idle;
+    curProcTotal = procCpu.utime + procCpu.stime + procCpu.cutime + procCpu.cstime;
 
+    if (curSysTotal > lastSysTotal && curSysUsed >= lastSysUsed && curProcTotal >= lastProcTotal) {
       *cpu_engine = (curSysUsed - lastSysUsed) / (double)(curSysTotal - lastSysTotal) * 100;
       *cpu_system = (curProcTotal - lastProcTotal) / (double)(curSysTotal - lastSysTotal) * 100;
+    }
 
     lastSysUsed = curSysUsed;
     lastSysTotal = curSysTotal;
     lastProcTotal = curProcTotal;
-
-  return 0;
-#endif
+  }
 }
 
 int32_t taosGetTotalMemory(int64_t *totalKB) {
@@ -618,7 +598,6 @@ void taosGetProcIODelta(int64_t *rchars, int64_t *wchars, int64_t *read_bytes, i
   static int64_t last_wchars = 0;
   static int64_t last_read_bytes = 0;
   static int64_t last_write_bytes = 0;
-
   static int64_t cur_rchars = 0;
   static int64_t cur_wchars = 0;
   static int64_t cur_read_bytes = 0;
@@ -632,6 +611,11 @@ void taosGetProcIODelta(int64_t *rchars, int64_t *wchars, int64_t *read_bytes, i
     last_wchars = cur_wchars;
     last_read_bytes = cur_read_bytes;
     last_write_bytes = cur_write_bytes;
+  } else {
+    *rchars = 0;
+    *wchars = 0;
+    *read_bytes = 0;
+    *write_bytes = 0;
   }
 }
 
@@ -693,7 +677,6 @@ int32_t taosGetCardInfo(int64_t *receive_bytes, int64_t *transmit_bytes) {
 void taosGetCardInfoDelta(int64_t *receive_bytes, int64_t *transmit_bytes) {
   static int64_t last_receive_bytes = 0;
   static int64_t last_transmit_bytes = 0;
-
   static int64_t cur_receive_bytes = 0;
   static int64_t cur_transmit_bytes = 0;
   if (taosGetCardInfo(&cur_receive_bytes, &cur_transmit_bytes) == 0) {
@@ -701,6 +684,9 @@ void taosGetCardInfoDelta(int64_t *receive_bytes, int64_t *transmit_bytes) {
     *transmit_bytes = cur_transmit_bytes - last_transmit_bytes;
     last_receive_bytes = cur_receive_bytes;
     last_transmit_bytes = cur_transmit_bytes;
+  } else {
+    *receive_bytes = 0;
+    *transmit_bytes = 0;
   }
 }
 

tests/script/tmp/monitor.sim

+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/cfg.sh -n dnode1 -c monitorfqdn -v localhost
+system sh/cfg.sh -n dnode1 -c monitorport -v 80
+system sh/cfg.sh -n dnode1 -c monitorInterval -v 1
+system sh/cfg.sh -n dnode1 -c monitorComp -v 1
+#system sh/cfg.sh -n dnode1 -c supportVnodes -v 128
+
+system sh/exec.sh -n dnode1 -s start
+sql connect
+
+print =============== show dnodes
+sleep 2000
+sql create database db vgroups 2;
+sleep 2000
+
+print =============== create drop qnode 1
+sql create qnode on dnode 1
+sql create snode on dnode 1
+sql create bnode on dnode 1
+
+return
+print =============== restart
+system sh/exec.sh -n dnode1 -s stop -x SIGINT
+system sh/exec.sh -n dnode1 -s start
+
+
+return 
+system sh/deploy.sh -n dnode2 -i 2
+system sh/exec.sh -n dnode2 -s start
+system sh/exec.sh -n dnode2 -s stop -x SIGINT
+system sh/exec.sh -n dnode2 -s start
+
+system sh/exec.sh -n dnode1 -s stop -x SIGINT
+system sh/exec.sh -n dnode2 -s stop -x SIGINT