Kurt,
> This is without any other query running, right? I even find 5000
> cs/s rather large if there isn't any other process that wants
> some CPU.
Sorry! Darn!
Important fact left out of the problem description: The issue happens when
*two or more* intensive queries are running simultaneosly.
> To me this can only make sense in case there is an other backend
> trying to use the same memory, and it needs to be moved from 1
> CPU to an other.
Yes. See above.
--
Josh Berkus
Aglio Database Solutions
San Francisco