When I start AWS node, and check average IOPS, it was usually between 3000-4000. But after running my test, when I check the iops in AWS node, I see it keeps on decreasing, impacting the throughput of my perfromance test. Not sure if it is expected that iops will keep on dropping after sometime? Can anyone please guide here?
1 Answers
Are you running GP2 or PIOPs?
If its GP2, it is worth noting that they use burstable credits allowing upto 3000 IOPs. After these credits expire you'll be left with 3 X EBS storage size (in GBs) for IOPs.
So for example, 50GB of storage would be 3 X 50 = 150 IOPs.
This article should help you to further understand: https://aws.amazon.com/blogs/aws/new-burst-balance-metric-for-ec2s-general-purpose-ssd-gp2-volumes/
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