Vivek Khera wrote: > >>>>> "BM" == Bruce Momjian <[EMAIL PROTECTED]> writes: > > >> Sounds reasonable to me. Are there many / any scenarios where a plain > >> fsync would be faster than open_sync? > > BM> Yes. If you were doing multiple WAL writes before transaction fsync, > BM> you would be fsyncing every write, rather than doing two writes and > BM> fsync'ing them both. I wonder if larger transactions would find > BM> open_sync slower? > > consider loading a large database from a backup dump. one big > transaction during the COPY. I don't know the implications it has on > this scenario, though.
COPY only does fsync on COPY completion, so I am not sure there are enough fsync's there to make a difference. -- Bruce Momjian | http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])
