On 2013-09-02 19:10:57 -0700, Jeff Davis wrote: > There is a significant amount of code supporting the changing of > full_page_writes while the server is running, including an > XLOG_FPW_CHANGE wal record. But I don't see the use-case; surely almost > nobody changes this on a running server, because either your filesystem > guarantees atomic page writes for you or not. > > I'd like to submit a patch to just make it into a PGC_POSTMASTER and > remove the code to support changing it.
I've wondered about that before. But always decided that we wouldn't gain all that much by making it PGC_POSTMASTER since the effective value of full_page_writes still needs to be changeable at runtime since we need to force-enable full page writes during a pg_start/stop_backup(). Greetings, Andres Freund -- Andres Freund http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
