From: Luke Lonergan <llonergan@greenplum.com>
To: Jignesh Shah <J.K.Shah@Sun.COM>
Cc: Juan Casero <caseroj@comcast.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: PostgreSQL and Ultrasparc T1
Date: Mon, 19 Dec 2005 17:34:31 -0800
Message-ID: <BFCC9FA7.16D39%llonergan@greenplum.com> (raw)
In-Reply-To: <fcc4f7c276bc.43a6cfe2@sun.com>
Jignesh,
On 12/19/05 12:21 PM, "Jignesh Shah" <J.K.Shah@Sun.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
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To: pgsql-performance@postgresql.org
Cc: llonergan@greenplum.com, J.K.Shah@Sun.COM, caseroj@comcast.net
Subject: Re: PostgreSQL and Ultrasparc T1
In-Reply-To: <BFCC9FA7.16D39%llonergan@greenplum.com>
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