I want to monitor accessNotInMemory of mongodb
recordStats information was specific to the older MMAP storage engine and removed during the MongoDB 3.0 development cycle as part of the work toward collection-level locking and the new storage engine API.
A more general performance indicator you can monitor is
db.serverStatus().extra_info.page_faults. This metric is available in MongoDB 3.2 as well as prior versions (2.2+, at least).
Given there are multiple storage engines available in MongoDB 3.0, there are also more detailed per-engine metrics that might be of interest. For example, WiredTiger is the default storage engine as at MongoDB 3.2, and includes a comprehensive set of metrics in the
wiredTiger section of