RDS Cloudwatch Metrics : ReadIOPS and WriteIOPS
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Under Amazon RDS Metrics we have two metrics :
- ReadIOPS
- WriteIOPS
My understanding is that the term "IOPS" refers to read and write operations collectively, so I'm a bit confused why there are two metrics here with the "IOPS" suffix. Are these just unfortunately named in a confusing way, or is there something more to the metric value that I'm missing ?
Background : I'm trying to reason about IOPS utilization for an RDS DB with PIOPS storage. e.g. (Read + Write)/Provisioned as a utilization percentage.
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Read and write operations are simply instrumented separately for the benefit of the database admin. To get the total, you simply add them together, which you've already done. Your formula to calculate the utilization is correct.
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