Re: TOAST performance (was Re: [GENERAL] Delete Performance)

Josh Rovero wrote:

> Tom Lane wrote
>
>>
>> I did some experimentation here and found a rather surprising
>> dependency: the time to delete a bunch of data is pretty much
>> directly proportional to the disk space it occupies.  This says
>> that we're paying through the nose for having XLOG make copies
>> of about-to-be-modified pages.
>
Can't we somehow WAL only metadata and not the actual pages for
DELETEs - as delete is essentially (though currently not technically)
just metadata it should be a possible thing to do.

>> ------------------
>
Hannu