On 07/25/2012 07:38 PM, leo xu wrote:
> hello:
> i know oracle scatter read blocks,can set db_file_multiblock_read_count
> every time,
> i see postgres,it exists scatter read blocks,it is seq_scan,how to know
> scan many bloks every time?
>
If I understand correctly, you want to have a sequential scan read from
more than one place at once.
This is not currently supported.
The effective_io_concurrency setting would be where you would set it,
but it does not affect sequential scans at the moment.
--
Craig Ringer
