From f7c7aad1351a0ed58f458e485968af498d542b5b Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Thu, 16 Oct 2003 08:52:44 +0000 Subject: * Upgraded to Berkeley DB 4.1.25 and do not synchronously flush the log on commit. This means that there is a small change that some transactions may be rolled back in case of a system crash, but this should not be a problem (it merely might cause some expression realisations to be rolled back), and it vastly improves performance. * Upgraded to ATerm 2.0.5 (which also includes Armijn's 64-bit patches). --- src/db.cc | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'src/db.cc') diff --git a/src/db.cc b/src/db.cc index 75f97a1e45b9..2f53ca3b5231 100644 --- a/src/db.cc +++ b/src/db.cc @@ -160,6 +160,7 @@ void Database::open(const string & path) env->set_lg_bsize(32 * 1024); /* default */ env->set_lg_max(256 * 1024); /* must be > 4 * lg_bsize */ env->set_lk_detect(DB_LOCK_DEFAULT); + env->set_flags(DB_TXN_WRITE_NOSYNC, 1); /* The following code provides automatic recovery of the @@ -252,11 +253,11 @@ void Database::close() { debug(format("closing table %1%") % i->first); Db * db = i->second; - db->close(0); + db->close(DB_NOSYNC); delete db; } - env->txn_checkpoint(0, 0, 0); +// env->txn_checkpoint(0, 0, 0); env->close(0); } catch (DbException e) { rethrow(e); } @@ -285,8 +286,8 @@ TableId Database::openTable(const string & tableName) Db * db = new Db(env, 0); try { - // !!! fixme when switching to BDB 4.1: use txn. - db->open(tableName.c_str(), 0, DB_HASH, DB_CREATE, 0666); + db->open(0, tableName.c_str(), 0, + DB_HASH, DB_CREATE | DB_AUTO_COMMIT, 0666); } catch (...) { delete db; throw; -- cgit 1.4.1