How to increase the %Resident of a bucket


I have an Enterprise cluster (v 7.2.4) and just noticed that one my buckets (bucket1) has 91,4% resident instead of 100% which was the usual value, the
RAM used/quota values shows that it still has memory available (27GiB / 54GiB).
I know that 100% should be the goal, but I do not understand why it is not the case here. How can I check if there is any problem and why it could be happening? How can I check which documents are not resident and actually should be resident? and even how can I increase such %resident value? FYI, evictionPolicy is valueonly.

Thanks in advance for your help.

Is there an issue as a result of not every document not being resident? If not, I wouldn’t worry about it.

If there is sufficient space, reading every document will result in 100% residency.