Elastic Compute Service:View the monitoring data of a cloud disk

Minute-level monitoring

You can view the minute-level monitoring data of a cloud disk, such as IOPS, throughput, and latency, in the ECS console.

1. Go to ECS console - Block Storage.

2. In the top navigation bar, select the region and resource group of the resource that you want to manage.

3. Find the cloud disk whose monitoring data you want to view and click the disk ID to go to the Basic Information tab of the disk details page.

4. Click the Monitoring tab.

5. In the time range section, click the icon and specify the start time and end time of the time range for query.

   

6. Move the pointer over a point in time in the charts to view the metrics.

   

Near real-time monitoring

Compared with the ECS console, which displays the minute-level monitoring data of each cloud disk, CloudLens for EBS collects near-real-time monitoring data of cloud disks. You can monitor the finer-grained performance changes of cloud disks by using Cloud Disk Analysis in the EBS console.

1. Log on to the Elastic Block Storage (EBS) console.

   Note

   The first time you log on to the EBS console, you must create a service-linked role for EBS as prompted. For more information, see Service-linked role for EBS.

2. In the left-side navigation pane, choose EBS Lens > Cloud Disk Analysis.

3. In the upper-left corner of the top navigation bar, select a region.

4. On the Cloud Disk Analysis page, find the disk whose monitoring data you want to view and click Monitor in the Actions column.

5. On the Near Real-time Monitoring page, you can view the monitoring data of the target disk within the specified time range.

   Note

   Second-level monitoring data has a latency of 1 to 5 minutes. When you query data, the data from the last 1 to 5 minutes may be zero, which indicates that the data values have not yet been retrieved.

   Metric descriptions

   Data Metric	Description
   Throughput	The amount of data successfully transferred by the disk within the query time range. The unit is MBps. Follow this metric if you deploy applications that require many sequential read and write operations. For an ESSD AutoPL disk, second-level monitoring displays the baseline and pre-provisioned throughput metrics. For more information about ESSD AutoPL disks, see ESSD AutoPL disks.
   IOPS	The number of input/output operations per second (IOPS) processed by the disk. This metric indicates the ability of the block storage to handle read and write operations. Follow this metric if you deploy transaction-intensive applications. For an ESSD AutoPL disk, second-level monitoring displays the baseline and pre-provisioned IOPS metrics. For more information about ESSD AutoPL disks, see ESSD AutoPL disks.
   Average I/O size (read/write)	The amount of data read or written by the disk per I/O operation. The unit is bytes. I/O size affects the throughput and efficiency of the storage system. Some systems may be optimized for transferring large blocks of data, while others may perform better with small block operations. Understanding and optimizing the I/O size based on your application can improve overall system performance.
   BPS watermark	The ratio of the current disk throughput to the maximum disk throughput. When this ratio approaches 100%, the disk is transferring data at near its maximum capacity. A further increase in load may cause performance bottlenecks and affect application response speed. Monitoring this ratio helps you adjust the disk configuration or optimize your application to avoid potential performance issues.
   IOPS watermark	The ratio of the current disk IOPS to the maximum disk IOPS. When this ratio approaches 100%, the disk is close to its limit for handling concurrent requests. This can lead to increased latency or failed requests. Monitoring this ratio helps you determine if the disk meets the real-time performance needs of your application. You can then make adjustments to maintain efficient and stable application performance.

   Metric value descriptions

   Second-level monitoring lets you query monitoring data from the last 5 minutes, 15 minutes, 1 hour, 6 hours, or 1 day. Each metric value is the maximum value of the monitoring data collected for the disk within a 5-second interval.

   • Time range: 5 minutes or 15 minutes

     You can query only the maximum value of the disk monitoring data. The minimum granularity displayed in the data metric window is 5 seconds.

     

   • Time range: 1 hour, 6 hours, or 1 day

     You can query the maximum, minimum, average, and total values of the disk monitoring data. The minimum granularity displayed in the data metric window depends on the time range. For example, if you query monitoring data from the last hour, the minimum granularity displayed is 10 seconds.

     • Maximum value: The maximum value recorded during the 10-second interval.

     • Minimum value: The minimum value recorded during the 10-second interval.

     • Average value: The average value recorded during the 10-second interval.

     • Total: The sum of all values recorded during the 10-second interval.

     

EBS console

1. Log on to the Elastic Block Storage (EBS) console.

   Note

   The first time you log on to the EBS console, you must create a service-linked role for EBS as prompted. For more information, see Service-linked role for EBS.

2. In the left-side navigation pane, choose EBS Lens > Cloud Disk Analysis.

3. In the upper-left corner of the top navigation bar, select a region.

4. On the Cloud Disk Analysis page, find the ESSD AutoPL disk that you want to view and click Monitor in the Actions column.

5. In the navigation pane on the left, click the AutoPL Burst IO tab.

6. On the AutoPL Burst IO page, you can view the burst details of the ESSD AutoPL disk, such as the burst time and burst count.

   Note

   The latency for burst event queries and burst detail queries is less than 1 hour. This means that the latest available data is from one hour ago.

ECS console

You can view the number of burst I/Os of an ESSD AutoPL disk within a specific time range in the ECS console.

1. Go to ECS console - Block Storage.

2. In the top navigation bar, select the region and resource group of the resource that you want to manage.

3. Find the cloud disk whose monitoring data you want to view and click the disk ID to go to the Basic Information tab of the disk details page.

4. Click the Monitoring tab.

5. In the CloudLens for EBS section, click the icon and specify the start time and end time of the time range for query.

   Note

   The query time range cannot exceed 6 hours.

6. You can move the pointer over a point in time in the chart to view the number of burst I/Os.