Simple thing to make pg_autovacuum more useful

["Joshua D. Drake" <jd(at)commandprompt(dot)com>]

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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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