Re: [PERFORM] CPU utilization vs. IO wait, shared buffers?

2008-10-30 Thread Oliver Johnson
On Thu, Oct 30, 2008 at 4:41 PM, Scott Marlowe <[EMAIL PROTECTED]> wrote: > On Thu, Oct 30, 2008 at 3:41 PM, Oliver Johnson > <[EMAIL PROTECTED]> wrote: > >> Another thing to note, we have VACUUM ANALYZE running on an hourly >> interval and the switch from CPU to I

[PERFORM] CPU utilization vs. IO wait, shared buffers?

2008-10-30 Thread Oliver Johnson
Hi everybody, I am running a bake/load test and I am seeing sudden, daily shifts from CPU utilization to IO wait. The load harness has been running for 3 weeks and should be putting a uniform load on the application. The application processes data on a daily basis and a sawtooth CPU pattern on th