Collect Amazon EC2 instance store volume NVMe driver metrics - Amazon CloudWatch
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Collect Amazon EC2 instance store volume NVMe driver metrics

For CloudWatch agent to collect Amazon NVMe driver metrics for instance store volumes attached to an Amazon EC2 instance, add the diskio section inside the metrics_collected section of the CloudWatch agent configuration file.

Additionally, the CloudWatch agent binary requires ioctl permissions for NVMe driver devices to collect metrics from attached instance store volumes.

The following metrics can be collected.

Metric Metric name in CloudWatch Description

instance_store_total_read_ops

diskio_instance_store_total_read_ops

The total number of completed read operations.

instance_store_total_write_ops

diskio_instance_store_total_write_ops

The total number of completed write operations.

instance_store_total_read_bytes

diskio_instance_store_total_read_bytes

The total number of read bytes transferred.

instance_store_total_write_bytes

diskio_instance_store_total_write_bytes

The total number of write bytes transferred.

instance_store_total_read_time

diskio_instance_store_total_read_time

The total time spent, in microseconds, by all completed read operations.

instance_store_total_write_time

diskio_instance_store_total_write_time

The total time spent, in microseconds, by all completed write operations.

instance_store_performance_exceeded_iops

diskio_instance_store_performance_exceeded_iops

The total time, in microseconds, that IOPS demand exceeded the volume's IOPS maximum performance.

instance_store_performance_exceeded_tp

diskio_instance_store_performance_exceeded_tp

The total time, in microseconds, that throughput demand exceeded the volume's maximum throughput performance.

instance_store_volume_queue_length

diskio_instance_store_volume_queue_length

The number of read and write operations waiting to be completed.