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Use DB_HASH instead of DB_BTREE for index databases. Since index keys are

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mainly 4-byte hashes already, there is no locality-of-reference to exploit
as a Btree. About a 7% performance gain.
This commit is contained in:
Howard Chu 2001-12-15 23:21:37 +00:00
parent 4ed4b3f0c0
commit bf61a1ca9d
1 changed files with 1 additions and 2 deletions
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3
servers/slapd/back-bdb/dbcache.c
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@ -71,7 +71,6 @@ bdb_db_cache(
rc = db->bdi_db->set_pagesize( db->bdi_db, BDB_PAGESIZE );
#ifdef BDB_IDL_MULTI
rc = db->bdi_db->set_flags( db->bdi_db, DB_DUP | DB_DUPSORT );
rc = db->bdi_db->set_dup_compare( db->bdi_db, bdb_bt_compare );
#endif
file = ch_malloc( strlen( name ) + sizeof(BDB_SUFFIX) );
@ -79,7 +78,7 @@ bdb_db_cache(
rc = db->bdi_db->open( db->bdi_db,
file, name,
DB_BTREE, bdb->bi_db_opflags | DB_CREATE | DB_THREAD,
DB_HASH, bdb->bi_db_opflags | DB_CREATE | DB_THREAD,
bdb->bi_dbenv_mode );
ch_free( file );