Kugutsumen wrote:
> On this quad core box with 8 gig of ram and a 4 gig zfs ARC, I keep seeing
> tons of cross calls and cpu migration.
>
> cross calls go up to 4000 during read only operations and up to 3 during
> read and write operations.
>
> The only thing running is postgresql and a si
It's likely that kernel service threads (which show up as "sched") are
preempting postgresql...at which point the runnable postgresql goes back
on the run queue to wait, at which point another idle CPU steals it so
that it can run immediately. With this happening often things can tend
to migrat
