We are using a Couchbase version 3.0 setup in EC2 (r5.large). We have recently migrated to AWS and we could see a very high CPU IO wait time (75%) from day1.
The couchbase cluster is having a total RAM of 85.3 GB out of which 56.8 GB is used.
Disk write queue size is ~2k to 12.5k. Compaction is happening very frequently in the buckets.
EBS volume of 50GB is attached with type gp2 and IOPS 150.
We would like to know f increasing volume to 100GB (so that IOPS also will become 300) will solve the issue. Is there any other options for solving this issue ?