Monitoring disk performance rates provides useful information to help you findthe right size and configuration of your disks.Compute Engine lets you view the average and peak IOPS and throughputrates for your disks by using theObservability tab in theGoogle Cloud console. This tab provides a predefined dashboard usingmetric dataso you can monitor your disk performance and configuration.

TheObservability tab shows the following graphs for IOPS andthroughput by default:

• Mean Throughput (MB/s): the average throughput rate, in MB persecond, for a disk over a period of time
• Mean Operations (IOPS): the average number of I/O operations persecond (IOPS) for a disk over a period of time
• Peak Throughput (MB/s): the peak throughput rates, in MB persecond, for a disk over a period of time
• Peak Operations (IOPS): the peak number of I/O operations persecond (IOPS) for a disk over a period of time

You can select the time period for the graphs on this page, using predefinedvalues of one hour, six hours, one day, one week, one month, or six weeks.You can also specify a custom time period for the graph data.

Before you begin

• If you haven't already, set upauthentication. Authentication verifies your identity for access to Google Cloud services and APIs. To run code or samples from a local development environment, you can authenticate to Compute Engine by selecting one of the following options:

  Select the tab for how you plan to use the samples on this page:

  Console

  When you use the Google Cloud console to access Google Cloud services and APIs, you don't need to set up authentication.

  gcloud

  1. Install the Google Cloud CLI. After installation,initialize the Google Cloud CLI by running the following command:

     gcloudinit

     If you're using an external identity provider (IdP), you must first sign in to the gcloud CLI with your federated identity.

     Note: If you installed the gcloud CLI previously, make sure you have the latest version by runninggcloud components update.
  2. Set a default region and zone.

  REST

  To use the REST API samples on this page in a local development environment, you use the credentials you provide to the gcloud CLI.

  Install the Google Cloud CLI. After installation,initialize the Google Cloud CLI by running the following command:

  gcloudinit

  If you're using an external identity provider (IdP), you must first sign in to the gcloud CLI with your federated identity.

  Note: If you installed the gcloud CLI previously, make sure you have the latest version by runninggcloud components update.

  For more information, seeAuthenticate for using REST in the Google Cloud authentication documentation.

Access the disk monitoring page for a single disk

You can view the disk monitoring page in the Google Cloud console.

1. In the Google Cloud console, go to theDisks page.

   Go to Disks

2. Click the name of a disk to open theManage disk page.

3. Click theObservability tab to display the monitoring dashboard for thedisk.

4. Optional: Reset the one hour default timeframe to the timeframe you wantto monitor, by choosing one of the following options:

   • 6 hours
   • 1 day
   • 1 week
   • 1 month
   • 6 weeks
   • Custom date or time range

Customize the disk monitoring dashboard

Use the following instructions to modify the graphs shown on thedisk monitoring dashboard.

1. Access the diskObservability tab.

2. Clickquery_statsExplore data.

   This opens anExplore page, where you can create a customized monitoringchart or table. For information about how to create a chart fora specific metric, seeChart a single metric type.

3. After creating a custom graph or table, you can save the result to a new orexisting custom dashboard.

   For more information about custom dashboards, seeView and customize Google Cloud dashboards.