On 4/12/2013 2:08 PM, Alvaro Herrera wrote:
> Tom Lane escribió:
>
>> Are you saying you intend to revert that whole concept? That'd be
>> okay with me, I think. Otherwise we need some thought about how to
>> inform the stats collector what's really happening.
>
> Maybe what we need is to consider table truncation as a separate
> activity from vacuuming. Then autovacuum could invoke it without having
> to do a full-blown vacuum. For this to work, I guess we would like to
> separately store the status of the back-scan in pgstat somehow (I think
> a boolean flag suffices: "were we able to truncate all pages that
> appeared to be empty?")
Should have read the entire thread before responding :)
Jan
--
Anyone who trades liberty for security deserves neither
liberty nor security. -- Benjamin Franklin