> Actually ... take a close look at the code. The delay is done in
> xact.c between XLogInsert(commitrecord) and XLogFlush(). As near
> as I can tell, both the write() and the fsync() will happen in
> XLogFlush(). This means the delay is just plain broken: placed
> there, it cannot do anything except waste time.
I see. :-(
> Another thing I am wondering about is why we're not using fdatasync(),
> where available, instead of fsync(). The whole point of preallocating
> the WAL files is to make fdatasync safe, no?
I don't have fdatasync() here. How does it compare to fsync().
--
Bruce Momjian | http://candle.pha.pa.us
[EMAIL PROTECTED] | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
