On Feb 1, 2007, at 10:57 AM, Tom Lane wrote:
ITAGAKI Takahiro [EMAIL PROTECTED] writes:
I'm thinking to add the number of vacuumed tuples to the message
from
vacuum. The stats collector will subtract the value from
n_dead_tuples
instead of setting it to zero. This is also needed if we want
AFAICS, the statistics information the number of dead tuples
(n_dead_tuples) has an estimation error.
VACUUM sends a message to stats collector process when it has swept a table.
The stats collector receives the message and sets n_dead_tuples of the table
to zero. However, we can update or delete
ITAGAKI Takahiro [EMAIL PROTECTED] writes:
I'm thinking to add the number of vacuumed tuples to the message from
vacuum. The stats collector will subtract the value from n_dead_tuples
instead of setting it to zero. This is also needed if we want to make
some kinds of partial vacuum methods.
Tom Lane [EMAIL PROTECTED] wrote:
I'm thinking to add the number of vacuumed tuples to the message from
vacuum. The stats collector will subtract the value from n_dead_tuples
instead of setting it to zero.
This seems awfully dangerous to me, because then you are operating on
dead
