From 394b9298faec503f3780645ed17fa00cce6da2dd Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Sat, 19 May 2012 01:25:06 -0400 Subject: Default to DB_TXN_WRITE_NOSYNC for all transactional operations * This is safer than DB_TXN_NOSYNC, and does not appear to impact performance. * Applying this to the dbenv is necessary to avoid many fdatasync(2) calls on db 5.x * We carefully and thoroughly flush databases upon shutdown and other important events already. --- src/db.cpp | 1 + 1 file changed, 1 insertion(+) (limited to 'src/db.cpp') diff --git a/src/db.cpp b/src/db.cpp index cbcbd3faa0..50f0891626 100644 --- a/src/db.cpp +++ b/src/db.cpp @@ -96,6 +96,7 @@ CDB::CDB(const char *pszFile, const char* pszMode) : pdb(NULL) dbenv.set_lk_max_locks(10000); dbenv.set_lk_max_objects(10000); dbenv.set_errfile(fopen(pathErrorFile.string().c_str(), "a")); /// debug + dbenv.set_flags(DB_TXN_WRITE_NOSYNC, 1); dbenv.set_flags(DB_AUTO_COMMIT, 1); dbenv.log_set_config(DB_LOG_AUTO_REMOVE, 1); ret = dbenv.open(pathDataDir.string().c_str(), -- cgit v1.2.3