Re: further testing on IDE drives

Vivek Khera wrote:
> >>>>> "BM" == Bruce Momjian <pgman@candle.pha.pa.us> 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.

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