Re: pg_freespacemap question

Mark Kirkwood wrote:
> Tatsuo Ishii wrote:
>
>> BTW, I found the answer to my question myself by reading the source
>> code: if that's an index, then blockfreebytes is explicitly set to 0.
>> I suggest that this should be noted in the README and in this case
>> blockfreebytes is better to set to NULL, rather than 0.
>>
> 
> Good points! I had not noticed this test case. Probably NULL is better 
> than zero.
>

Would setting it to 'BLCKSZ - (fixed index header stuff)' be better, 
since the btree page is empty? (I'll have to read up on how to calculate 
the header stuff!).

regards

Mark