Berkeley DB

Configuring the Memory Pool

There are two issues to consider when configuring the memory pool. The first issue, the most important tuning parameter for Berkeley DB applications, is the size of the memory pool. There are two ways to specify the pool size. First, calling the DBENV→set_cachesize function specifies the pool size for all of the applications sharing the Berkeley DB environment. Second, the DB→set_cachesize function only specifies a pool size for the specific database. Note: It is meaningless to call DB→set_cachesize for a database opened inside of a Berkeley DB environment because the environment pool size will override any pool size specified for a single database. For information on tuning the Berkeley DB cache size, see “Selecting ...