diff --git a/src/os/inc/osSysinfo.h b/src/os/inc/osSysinfo.h
index a0c8c0f910257bf864487d0200a8f3d575bf4d25..e2408058f068165506c7e6ffbc6e4ec3dee9a93c 100644
--- a/src/os/inc/osSysinfo.h
+++ b/src/os/inc/osSysinfo.h
@@ -30,8 +30,8 @@ int32_t taosGetDiskSize(char *dataDir, SysDiskSize *diskSize);
 
 int32_t taosGetCpuCores();
 void taosGetSystemInfo();
-bool taosReadProcIO(int64_t* rchars, int64_t* wchars);
-bool taosGetProcIO(float *readKB, float *writeKB);
+bool taosReadProcIO(int64_t* rchars, int64_t* wchars, int64_t* rbytes, int64_t* wbytes);
+bool taosGetProcIO(float *rcharKB, float *wcharKB, float *rbyteKB, float* wbyteKB);
 bool taosGetCardInfo(int64_t *bytes, int64_t *rbytes, int64_t *tbytes);
 bool taosGetBandSpeed(float *bandSpeedKb);
 bool taosGetNetworkIO(float *netInKb, float *netOutKb);
diff --git a/src/os/src/darwin/dwSysInfo.c b/src/os/src/darwin/dwSysInfo.c
index a87a15a3f211768ecce747c7bc6ff236bad2f3ee..f3a64c382e0bf648bbe1d291acfec0992a998197 100644
--- a/src/os/src/darwin/dwSysInfo.c
+++ b/src/os/src/darwin/dwSysInfo.c
@@ -191,9 +191,11 @@ void taosGetSystemInfo() {
   taosGetSystemLocale();
 }
 
-bool taosReadProcIO(int64_t *rchars, int64_t *wchars) {
+bool taosReadProcIO(int64_t *rchars, int64_t *wchars, int64_t *rbytes, int64_t *wbytes) {
   if (rchars) *rchars = 0;
   if (wchars) *wchars = 0;
+  if (rbytes) *rbytes = 0;
+  if (wbytes) *wbytes = 0;
   return true;
 }
 
diff --git a/src/os/src/detail/osSysinfo.c b/src/os/src/detail/osSysinfo.c
index 19568fec7d3b4a634f32fc7bf55b4f3e180de05a..93752f34f9ea4b4c55fb682fcc6e2c6c003b31ba 100644
--- a/src/os/src/detail/osSysinfo.c
+++ b/src/os/src/detail/osSysinfo.c
@@ -465,7 +465,7 @@ bool taosGetNetworkIO(float *netInKb, float *netOutKb) {
   return true;
 }
 
-bool taosReadProcIO(int64_t *rchars, int64_t *wchars) {
+bool taosReadProcIO(int64_t *rchars, int64_t *wchars, int64_t *rbytes, int64_t *wbytes) {
   FILE *fp = fopen(tsProcIOFile, "r");
   if (fp == NULL) {
     uError("open file:%s failed", tsProcIOFile);
@@ -475,7 +475,7 @@ bool taosReadProcIO(int64_t *rchars, int64_t *wchars) {
   ssize_t _bytes = 0;
   size_t len;
   char * line = NULL;
-  char   tmp[10];
+  char   tmp[15];
   int    readIndex = 0;
 
   while (!feof(fp)) {
@@ -491,16 +491,21 @@ bool taosReadProcIO(int64_t *rchars, int64_t *wchars) {
     } else if (strstr(line, "wchar:") != NULL) {
       sscanf(line, "%s %" PRId64, tmp, wchars);
       readIndex++;
-    } else {
+    } else if (strstr(line, "read_bytes:") != NULL){
+      sscanf(line, "%s %" PRId64, tmp, rbytes);
+      readIndex++;
+    } else if (strstr(line, "write_bytes:") != NULL){
+      sscanf(line, "%s %" PRId64, tmp, wbytes);
+      readIndex++;
     }
 
-    if (readIndex >= 2) break;
+    if (readIndex >= 4) break;
   }
 
   tfree(line);
   fclose(fp);
 
-  if (readIndex < 2) {
+  if (readIndex < 4) {
     uError("read file:%s failed", tsProcIOFile);
     return false;
   }
@@ -508,30 +513,39 @@ bool taosReadProcIO(int64_t *rchars, int64_t *wchars) {
   return true;
 }
 
-bool taosGetProcIO(float *readKB, float *writeKB) {
-  static int64_t lastReadbyte = -1;
-  static int64_t lastWritebyte = -1;
+bool taosGetProcIO(float *rcharKB, float *wcharKB, float *rbyteKB, float *wbyteKB) {
+  static int64_t lastRchar = -1, lastRbyte = -1;
+  static int64_t lastWchar = -1, lastWbyte = -1;
 
-  int64_t curReadbyte = 0;
-  int64_t curWritebyte = 0;
+  int64_t curRchar = 0, curRbyte = 0;
+  int64_t curWchar = 0, curWbyte = 0;
 
-  if (!taosReadProcIO(&curReadbyte, &curWritebyte)) {
+  if (!taosReadProcIO(&curRchar, &curWchar, &curRbyte, &curWbyte)) {
     return false;
   }
 
-  if (lastReadbyte == -1 || lastWritebyte == -1) {
-    lastReadbyte = curReadbyte;
-    lastWritebyte = curWritebyte;
+  if (lastRchar == -1 || lastWchar == -1 || lastRbyte == -1 || lastWbyte == -1) {
+    lastRchar = curRchar;
+    lastWchar = curWchar;
+    lastRbyte = curRbyte;
+    lastWbyte = curWbyte;
     return false;
   }
 
-  *readKB = (float)((double)(curReadbyte - lastReadbyte) / 1024);
-  *writeKB = (float)((double)(curWritebyte - lastWritebyte) / 1024);
-  if (*readKB < 0) *readKB = 0;
-  if (*writeKB < 0) *writeKB = 0;
+  *rcharKB = (float)((double)(curRchar - lastRchar) / 1024);
+  *wcharKB = (float)((double)(curWchar - lastWchar) / 1024);
+  if (*rcharKB < 0) *rcharKB = 0;
+  if (*wcharKB < 0) *wcharKB = 0;
+
+  *rbyteKB = (float)((double)(curRbyte - lastRbyte) / 1024);
+  *wbyteKB = (float)((double)(curWbyte - lastWbyte) / 1024);
+  if (*rbyteKB < 0) *rbyteKB = 0;
+  if (*wbyteKB < 0) *wbyteKB = 0;
 
-  lastReadbyte = curReadbyte;
-  lastWritebyte = curWritebyte;
+  lastRchar = curRchar;
+  lastWchar = curWchar;
+  lastRbyte = curRbyte;
+  lastWbyte = curWbyte;
 
   return true;
 }
@@ -542,13 +556,13 @@ void taosGetSystemInfo() {
   tsNumOfCores = taosGetCpuCores();
   tsTotalMemoryMB = taosGetTotalMemory();
 
-  float tmp1, tmp2;
+  float tmp1, tmp2, tmp3, tmp4;
   taosGetSysMemory(&tmp1);
   taosGetProcMemory(&tmp2);
   // taosGetDisk();
   taosGetBandSpeed(&tmp1);
   taosGetCpuUsage(&tmp1, &tmp2);
-  taosGetProcIO(&tmp1, &tmp2);
+  taosGetProcIO(&tmp1, &tmp2, &tmp3, &tmp4);
 
   taosGetSystemTimezone();
   taosGetSystemLocale();
diff --git a/src/plugins/http/src/httpMetricsHandle.c b/src/plugins/http/src/httpMetricsHandle.c
index 23602af3c7d6b19c9631587c2da3d1149d9ffa75..2031c2a6db2630b8a944cdb582d07e46c1f9313e 100644
--- a/src/plugins/http/src/httpMetricsHandle.c
+++ b/src/plugins/http/src/httpMetricsHandle.c
@@ -123,9 +123,9 @@ bool metricsProcessRequest(HttpContext* pContext) {
   }
 
   {
-    int64_t rchars = 0;
-    int64_t wchars = 0;
-    bool succeeded = taosReadProcIO(&rchars, &wchars);
+    int64_t rchars = 0, rbytes = 0;
+    int64_t wchars = 0, wbytes = 0;
+    bool succeeded = taosReadProcIO(&rchars, &wchars, &rbytes, &wbytes);
     if (!succeeded) {
       httpError("failed to get io info");
     } else {
diff --git a/src/plugins/monitor/src/monMain.c b/src/plugins/monitor/src/monMain.c
index a33e78076109c0d0643237cccba26b4acfc34b10..bf56f6b222a81c5187568a940d0a377754304b3e 100644
--- a/src/plugins/monitor/src/monMain.c
+++ b/src/plugins/monitor/src/monMain.c
@@ -148,9 +148,17 @@ typedef struct {
   char      sql[SQL_LENGTH + 1];
 } SMonConn;
 
+typedef struct {
+  float io_read;
+  float io_write;
+  float io_read_disk;
+  float io_write_disk;
+} SMonStat;
+
 static void *monHttpStatusHashTable;
 
 static SMonConn tsMonitor = {0};
+static SMonStat tsMonStat = {0};
 static int32_t  monQueryReqNum = 0, monSubmitReqNum = 0;
 static bool     monHasMnodeMaster = false;
 
@@ -163,6 +171,7 @@ static void  monSaveDisksInfo();
 static void  monSaveGrantsInfo();
 static void  monSaveHttpReqInfo();
 static void  monClearStatisInfo();
+static void  monGetSysStats();
 static void *monThreadFunc(void *param);
 static void  monBuildMonitorSql(char *sql, int32_t cmd);
 static void monInitHttpStatusHashTable();
@@ -300,6 +309,7 @@ static void *monThreadFunc(void *param) {
 
     if (tsMonitor.state == MON_STATE_INITED) {
       if (accessTimes % tsMonitorInterval == 0 || accessTimes == 1) {
+        monGetSysStats();
         //monSaveDnodesInfo has to be the first, as it calculates
         //stats using monSubmitReqNum before any insertion from monitor
         monSaveDnodesInfo();
@@ -398,6 +408,7 @@ static void monBuildMonitorSql(char *sql, int32_t cmd) {
              ", disk_engine float, disk_used float, disk_total float"
              ", net_in float, net_out float"
              ", io_read float, io_write float"
+             ", io_read_disk float, io_write_disk float"
              ", req_http int, req_http_rate float"
              ", req_select int, req_select_rate float"
              ", req_insert int, req_insert_success int, req_insert_rate float"
@@ -486,6 +497,15 @@ void monCleanupSystem() {
   monInfo("monitor module is cleaned up");
 }
 
+static void monGetSysStats() {
+  memset(&tsMonStat, 0, sizeof(SMonStat));
+  bool suc = taosGetProcIO(&tsMonStat.io_read, &tsMonStat.io_write,
+                           &tsMonStat.io_read_disk, &tsMonStat.io_write_disk);
+  if (!suc) {
+    monDebug("failed to get io info");
+  }
+}
+
 // unit is MB
 static int32_t monBuildMemorySql(char *sql) {
   float sysMemoryUsedMB = 0;
@@ -541,10 +561,8 @@ static int32_t monBuildReqSql(char *sql) {
 
 static int32_t monBuildIoSql(char *sql) {
   float readKB = 0, writeKB = 0;
-  bool  suc = taosGetProcIO(&readKB, &writeKB);
-  if (!suc) {
-    monDebug("failed to get io info");
-  }
+  readKB = tsMonStat.io_read;
+  writeKB = tsMonStat.io_write;
 
   return sprintf(sql, ", %f, %f", readKB, writeKB);
 }