Re: PostgreSQL and Ultrasparc T1

Jignesh,

On 12/19/05 12:21 PM, "Jignesh Shah" <J(dot)K(dot)Shah(at)Sun(dot)COM> wrote:

> I got about 720 MB/sec to 730 MB/sec with plain dd tests on my current
> storage configuration (8 LUNS on 4 fibers) which slowed me down (10K rpm 146
> GB disks FC) with 4 LUNS going through a longer pass to the disks (via a
> controller master array to slave JBODs to provide ) .
>
> extended device statistics
> r/s w/s Mr/s Mw/s wait actv wsvc_t asvc_t %w %b device
> 0.8 14.0 0.0 0.0 0.0 0.3 0.0 17.8 0 4 c3t0d0
> 91.4 0.0 91.4 0.0 0.0 1.0 0.0 10.5 0 96 c0t40d0
> 96.0 0.0 96.0 0.0 0.0 1.0 0.0 10.0 0 96 c5t40d1
> 95.8 0.0 95.8 0.0 0.0 1.0 0.0 10.0 0 96 c0t40d1

Can you please explain these columns? R/s, is that millions of pages or
extents or something? How do I translate this to 730 million bytes per
second?

- Luke