On 2016-03-07 21:10:19 +0100, Fabien COELHO wrote: > Now I cannot see how having one context per table space would have a > significant negative performance impact.
The 'dirty data' etc. limits are global, not per block device. By having several contexts with unflushed dirty data the total amount of dirty data in the kernel increases. Thus you're more likely to see stalls by the kernel moving pages into writeback. Andres -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
