Baptiste LHOSTE wrote:
>> Please show us the output from running this query:
>>
>> http://wiki.postgresql.org/wiki/Server_Configuration
> [very reasonable settings except for a very large work_mem]
Make sure that work_mem setting isn't driving you into swapping or
near-zero caching. A shortage of cache space could explain this
because it looks like about 8.5 ms for each page read. About the only
other thing I can think to recommend is to decrease
autovacuum_cost_delay to 10ms and see if that helps.
> These tables have two timestamp columns and a btree index on both
> timestamp column. Will it be more efficient for us to configure the
> autovacuum daemon analyze task only on those columns ?
No.
> 4 * 300 Go Raid 0
You do realize that if any of those four drives fail you will need to
use your backup, right?
-Kevin
