Bruce Momjian <pgman@candle.pha.pa.us> writes: > As far as #2, my posted proposal was to write the full pages to WAL when > they are written to the file system, and not when they are first > modified in the shared buffers ---
That is *completely* unworkable. Or were you planning to abandon the promise that a transaction is committed when we have flushed its WAL commit record? > Seems it is similar to fsync in risk, which is not a new option. The point here is that fsync-off is only realistic for development or playpen installations. You don't turn it off in a production machine, and I can't see that you'd turn off the full-page-write option either. So we have not solved anyone's performance problem. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq