Joshua D. Drake a écrit :
>
>> No wonder, I got IO problems with such a fragmentation.
>>
>> For people not very familiar with postgres especially those coming
>> from mysql,
>> i'd recommend paying attention to this.
>
> Definitely. The problem here is that you just aren't vacuuming enough,
> not that you didn't vacuum full. I would suggest reviewing autovacuum
> and seeing if that will help you.
>
And paying attention to the max_fsm_pages setting. A value too low won't
help vacuum's work.
Regards.
--
Guillaume.
http://www.postgresqlfr.org
http://docs.postgresqlfr.org