What are JE read buffers and when should I change their size?
JE follows two patterns when reading items from disk. In one mode a single database object, which might be a Btree node or a single data record, is faulted in because the application is executing a Database or Cursor operation and cannot find the item in cache. In a second mode, JE will read large sequential portions of the log on behalf of activities like environment startup or log cleaning, and will read in one or multiple objects. Single object reads use temporary buffers of a size specified by je.log.faultReadSize while sequential reads use temporary buffers of a size specified by je.log.iteratorReadSize. The defaults for these properties are listed in
