On Wed, Jun 23, 2010 at 9:25 PM, Robert Haas <[email protected]> wrote: > On Wed, Jun 23, 2010 at 3:37 PM, Bruce Momjian <[email protected]> wrote: >> Tom Lane wrote: >>> Dimitri Fontaine <[email protected]> writes: >>> > Josh Berkus <[email protected]> writes: >>> >> a) Eliminate WAL logging entirely >> >> If we elimiate WAL logging, that means a reinstall is required for even >> a postmaster crash, which is a new non-durable behavior. >> >> Also, we just added wal_level = minimal, which might end up being a poor >> name choice of we want wal_level = off in PG 9.1. Perhaps we should >> have used wal_level = crash_safe in 9.0. >> >> I have added the following TODO: >> >> Consider a non-crash-safe wal_level that eliminates WAL activity >> >> * >> http://archives.postgresql.org/pgsql-performance/2010-06/msg00300.php > > I don't think we need a system-wide setting for that. I believe that > the unlogged tables I'm working on will handle that case.
Aren't they going to be truncated at startup? If the entire system is running without WAL, we would only need to do that in case of an unclean shutdown wouldn't we? -- Dave Page EnterpriseDB UK: http://www.enterprisedb.com The Enterprise Postgres Company -- Sent via pgsql-performance mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
