Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Mon, Dec 6, 2010 at 9:04 PM, Josh Berkus <josh(at)agliodbs(dot)com> wrote:
>> Actually, on OSX 10.5.8, o_dsync and fdatasync aren't even available.
>> From my run, it looks like even so regular fsync might be better than
>> open_sync.
> But I think you need to use fsync_writethrough if you actually want durability.
Yeah. Unless your laptop contains an SSD, those numbers are garbage on
their face. So that's another problem with test_fsync: it omits
fsync_writethrough.
regards, tom lane