Simple thing to make pg_autovacuum more useful

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Hello,

Table "pg_catalog.pg_autovacuum"
Column | Type | Modifiers
- ------------------+---------+-----------
vacrelid | oid | not null
enabled | boolean | not null
vac_base_thresh | integer | not null
vac_scale_factor | real | not null
anl_base_thresh | integer | not null
anl_scale_factor | real | not null
vac_cost_delay | integer | not null
vac_cost_limit | integer | not null
freeze_min_age | integer | not null
freeze_max_age | integer | not null

Can we by default set vac_cost_limit and vac_cost_delay have a DEFAULT
- -1? That way by default it will use the settings in postgresql.conf?

Secondly can we set the default for freeze_min_age to 100mil (I think
that is the default in the docs) and freeize_max_age to the default
200000000 .

In the environments we manage we are using pg_autovacuum alot in order
to manage individual relations.

This is probably too late for 8.3 :( but it should would make our lives
easier.

Sincerely,

Joshua D. Drake

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