>>> 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.
>
>> Yes, this is basically another fsync-like option that isn't for
>> production usage in most cases. Sad but true.
>
> Just to make my position perfectly clear: I don't want to see
> this option shipped in 8.1.
Why not ? If your filesystem buffer size matches your pg page size,
and you have a persistent write cache, the option makes perfect sense.
Andreas