Score:0

How to Read Amazon CloudWatch metrics for Amazon EBS?

jo flag

I want to know VolumeReadOps, VolumeThroughOps and throughout of EBS volume to determine whether I need to update iops or throughout of my EBS volume. I want to know maximum and average ops. But my calculations according to description of VolumeReadOps aren't consistent from cloudwatch of a 14 days running instance.

Read throughput (Ops/s)

  • 1 minute Sum at 15:10: 381
  • 5 minutes Sum at 15:10: 365
  • 1 second minimum/maximum at 15:10: 25,000

I suppose 5 minutes Sum should be 5x of 1 minutes Sum.

Why is 1 second ops so large? Is it accurate?

Description of VolumeReadOps

The total number of read operations in a specified period of time. Note: read operations are counted on completion. To calculate the average read operations per second (read IOPS) for the period, divide the total read operations in the period by the number of seconds in that period. The Minimum and Maximum statistics on this metric are supported only by volumes attached to Nitro-based instances.

Official document Amazon CloudWatch metrics for Amazon EBS

mangohost

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.