diff --git a/src/observer/virtual_table/ob_all_virtual_io_status.cpp b/src/observer/virtual_table/ob_all_virtual_io_status.cpp
index a439ead4fe..7f3d4162b4 100644
--- a/src/observer/virtual_table/ob_all_virtual_io_status.cpp
+++ b/src/observer/virtual_table/ob_all_virtual_io_status.cpp
@@ -438,19 +438,23 @@ int ObAllVirtualIOQuota::record_sys_group(const uint64_t tenant_id, ObSysIOUsage
     ObSysIOUsage::SysAvgItems sys_avg_iops, sys_avg_size, sys_avg_rt;
     sys_io_usage.calculate_io_usage();
     sys_io_usage.get_io_usage(sys_avg_iops, sys_avg_size, sys_avg_rt);
-    for (int64_t i = 0; i < SYS_RESOURCE_GROUP_CNT; ++i) {
-      for (int64_t j = 0; OB_SUCC(ret) && j < static_cast<int>(ObIOMode::MAX_MODE); ++j) {
-        if (sys_avg_size.at(i).at(j) > std::numeric_limits<double>::epsilon()) {
-          QuotaInfo item;
-          item.tenant_id_ = tenant_id;
-          item.mode_ = static_cast<ObIOMode>(j);
-          item.group_id_ = SYS_RESOURCE_GROUP_START_ID + j;
-          item.size_ = sys_avg_size.at(i).at(j);
-          item.real_iops_ = sys_avg_iops.at(i).at(j);
-          item.min_iops_ = INT64_MAX;
-          item.max_iops_ = INT64_MAX;
-          if (OB_FAIL(quota_infos_.push_back(item))) {
-            LOG_WARN("push back io group item failed", K(j), K(ret), K(item));
+    for (int64_t i = 0; i < sys_avg_size.count(); ++i) {
+      if (i >= sys_avg_size.count() || i >= sys_avg_iops.count() || i >= sys_avg_rt.count()) {
+        //ignore
+      } else {
+        for (int64_t j = 0; OB_SUCC(ret) && j < static_cast<int>(ObIOMode::MAX_MODE); ++j) {
+          if (sys_avg_size.at(i).at(j) > std::numeric_limits<double>::epsilon()) {
+            QuotaInfo item;
+            item.tenant_id_ = tenant_id;
+            item.mode_ = static_cast<ObIOMode>(j);
+            item.group_id_ = SYS_RESOURCE_GROUP_START_ID + i;
+            item.size_ = sys_avg_size.at(i).at(j);
+            item.real_iops_ = sys_avg_iops.at(i).at(j);
+            item.min_iops_ = INT64_MAX;
+            item.max_iops_ = INT64_MAX;
+            if (OB_FAIL(quota_infos_.push_back(item))) {
+              LOG_WARN("push back io group item failed", K(j), K(ret), K(item));
+            }
           }
         }
       }
diff --git a/src/share/io/ob_io_struct.cpp b/src/share/io/ob_io_struct.cpp
index 580f1e550d..4a179957a1 100644
--- a/src/share/io/ob_io_struct.cpp
+++ b/src/share/io/ob_io_struct.cpp
@@ -1971,7 +1971,7 @@ int ObAsyncIOChannel::submit(ObIORequest &req)
     }
   } else if (device_channel_->used_io_depth_ > device_channel_->max_io_depth_) {
     ret = OB_EAGAIN;
-    LOG_INFO("reach max io depth", K(ret), K(device_channel_->used_io_depth_), K(device_channel_->max_io_depth_));
+    FLOG_INFO("reach max io depth", K(ret), K(device_channel_->used_io_depth_), K(device_channel_->max_io_depth_));
   } else {
     ATOMIC_INC(&submit_count_);
     ATOMIC_FAA(&device_channel_->used_io_depth_, get_io_depth(req.io_size_));
diff --git a/src/share/ob_local_device.cpp b/src/share/ob_local_device.cpp
index 74a35c4f6a..3fd5881bfe 100644
--- a/src/share/ob_local_device.cpp
+++ b/src/share/ob_local_device.cpp
@@ -1131,6 +1131,7 @@ int ObLocalDevice::io_submit(
     common::ObIOCB *iocb)
 {
   int ret = OB_SUCCESS;
+  ObTimeGuard time_guard("LocalDevice", 5000); //5ms
   ObLocalIOContext *local_io_context = nullptr;
   ObLocalIOCB *local_iocb = nullptr;
   struct iocb *iocbp = nullptr;
@@ -1150,6 +1151,7 @@ int ObLocalDevice::io_submit(
   } else {
     iocbp = &(local_iocb->iocb_);
     int submit_ret = ::io_submit(local_io_context->io_context_, 1, &iocbp);
+    time_guard.click("LocalDevice_submit");
     if (1 != submit_ret) {
       ret = OB_IO_ERROR;
       SHARE_LOG(WARN, "Fail to submit aio, ", K(ret), K(submit_ret), K(errno), KERRMSG);