On 19 June 2013 10:15, Andres Freund <andres@2ndquadrant.com> wrote:
> On 2013-06-19 10:03:40 +0100, Simon Riggs wrote:
>> On 19 June 2013 09:19, Kyotaro HORIGUCHI
>> <horiguchi.kyotaro@lab.ntt.co.jp> wrote:
>>
>> > It should useful in other aspects but it seems a bit complicated
>> > just to know about visibility bits for certain blocks.
>>
>> With your current patch you can only see the visibility info for
>> blocks in cache, not for all blocks. So while you may think it is
>> useful, it is also unnecessarily limited in scope.
>
> pg_freespace should do more than that? Are you thinking of
> pg_buffercache?
I was... my mistake. Please continue Kyotaro.
--Simon Riggs http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training & Services