Re: [pgsql-hackers-win32] win32 performance - fsync question

Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > However, I do prefer this patch and let Win32 have the same write cache
> > issues as Unix, for consistency.
>
> I agree that the open flag is more nearly O_DSYNC than O_SYNC.
>
> ISTM Windows' idea of fsync is quite different from Unix's and therefore
> we should name the wal_sync_method that invokes it something different
> than fsync. "write_through" or some such? We already have precedent
> that not all wal_sync_method values are available on all platforms.
>
> I'm not taking a position on which the default should be ...

Yes, I am thinking that too. I hesistated because it adds yet another
sync method, and we have to document it works only on Win32, but I see
no better solution.

I am going to let the Win32 users mostly vote on what the default should
be.

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