We are using couchbase server 4.0.0 cluster with 7 nodes, 2 replica and each node has 100 GB RAM.
Our problem is, replica data is using more RAM then the active data inside the bucket.
While searching, we came across one ejection threshold: “pager_active_vb_pcnt”.
And we have tried to change this threshold to 5 (Default is 40). So what we understand is, it will eject only 5% active data and 95% replica data from RAM when ejection happens.
- The above threshold did not worked as desired. So are we missing anything ?
- Are we looking at wrong place ? Becuase our goal is to utilize more RAM for active data and not for replica. So is there any other settings that we should do here ?