Berkeley DB

DbEnv.set_lg_bsize

						import com.sleepycat.db.*;
						public void set_lg_bsize(int lg_bsize)
						throws DbException;
					

Description

Set the size of the in-memory log buffer, in bytes. By default, or if the value is set to 0, a size of 32K is used. The size of the log file (see DbEnv.set_lg_max) must be at least four times the size of the the in-memory log buffer.

Log information is stored in-memory until the storage space fills up or transaction commit forces the information to be flushed to stable storage. In the presence of long-running transactions or transactions producing large amounts of data, larger buffer sizes can increase throughput.

The DbEnv.set_lg_bsize interface may only be used to configure Berkeley DB before the DbEnv.open interface is called. ...