Message-ID: <45520C5C.8000705@streppone.it>
Date: Wed, 08 Nov 2006 17:57:00 +0100
From: Cosimo Streppone <cosimo@streppone.it>
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To: Postgresql Performance list <pgsql-performance@postgresql.org>
Subject: Re: Easy read-heavy benchmark kicking around?
References: <20061102160057.GA26580@oppetid.no>	
	<454F9F62.9070408@janestcapital.com>
	<45520338.2050804@logix-tt.com>
	<b42b73150611080834o2005589fn670c4b481cfbb80d@mail.gmail.com>
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Merlin Moncure wrote:

> On 11/8/06, Markus Schaber <schabi@logix-tt.com> wrote:
>> Hi, Brian,
>>
>> Brian Hurt wrote:
>>
>> > So the question is: is there an easy to install and run, read-heavy
>> > benchmark out there that I can wave at them to get them to fix the
>> > problem?
>>
>> For sequential read performance, use dd. Most variants of dd I've seen
>> output some timing information, and if not, do a "time dd
>> if=/your/device of=/dev/null bs=1M" on the partition.
> 
> we had a similar problem with a hitachi san, the ams200.  Their
> performance group refused to admit the fact that 50mb/sec dd test was
> a valid performance benchmark and needed to be addressed.
 >
 > [...]
 >
> oh, the unit also lost a controller after about a week of
> operation...the unit being a HITACHI SAN, the AMS200.
> 
> any questions?

Yes, one.
What was that unit?

;-)

-- 
Cosimo