Berkeley DB

DBENV→set_lg_bsize

						#include <db.h>
						int
						DBENV→set_lg_bsize(DB_ENV *dbenv, u_int32_t lg_bsize);
					

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 be used only to configure Berkeley DB before the DBENV→open interface is called.

The ...