Re: Rapid Seek Devices (feature request)

On 08/17/2009 03:24 AM, Craig Ringer wrote:
> On 16/08/2009 9:06 PM, NTPT wrote:
>> So I suggest we should have "random_page_cost" and
>> "Sequential_page_cost" configurable on per tablespace basis.
>
> That strikes me as a REALLY good idea, personally, though I don't know
> enough about the planner to factor in implementation practicalities and
> any cost for people _not_ using the feature.

Could not pgsql *measure* these costs (on a sampling basis, and with long
time-constants)?

- Jeremy