On Thu, 2005-06-16 at 09:35, Francesco Dalla Ca' wrote: > O.S.: > SuSE SLES-8 (i386) > VERSION = 8.1 > > After some test with the "syncbench" posted on performance mailing-list > (http://archives.postgresql.org/pgsql-performance/2004-09/msg00080.php) > i have obtained that open() with O_DSYNC was the fastest sync method. > I want to test this for parameter "wal_sync_method" on a test workload > directly on Postgres and i have configured that on postgresql.conf file: > > wal_sync_method = open_datasync > > But at the server start: > > > pg_ctl -D /db10/postgres/data start > postmaster starting > > FATAL: invalid value for parameter "wal_sync_method": "open_datasync" > > What's wrong? Not all methods are supported on all platforms. It appears this one isn't supported on yours.
