On Feb 19, 2008, at 1:22 PM, Tom Lane wrote:
>
> maintenance_work_mem, to be more specific. If that's too small it
> will
> definitely cripple restore speed. I'm not sure fsync would make much
> difference, but checkpoint_segments would. See
> http://www.postgresql.org/docs/8.3/static/populate.html#POPULATE-PG-
> DUMP
>
I wonder if it would be worthwhile if pg_restore could emit a warning
if maint_work_mem is "low" (start flamewar on what "low" is).
And as an addition to that - allow a cmd line arg to have pg_restore
bump it before doing its work? On several occasions I was moving a
largish table and the COPY part went plenty fast, but when it hit
index creation it slowed down to a crawl due to low maint_work_mem..
--
Jeff Trout <jeff@jefftrout.com>
www.dellsmartexitin.com
www.stuarthamm.net
