Re: intel vs amd benchmark for pg server

Michael Loftis <mloftis@wgops.com>

From: Michael Loftis <mloftis@wgops.com>
To: postgres@vrane.com
Cc: "P.J. Josh Rovero" <rovero@sonalysts.com>, pgsql-general@postgresql.org
Date: 2002-04-26T18:38:06Z
Lists: pgsql-general
Yes but you keep comparing apples and oranges.  Your benchmarks don't 
mean hardly anything CPU speed wise because you've got so many other 
variants.

postgres@vrane.com wrote:

>1. 64MB machines beat 192MB and 240MB machies.
>
>2. On 64 MB machine I tested on 5400rpm drive
>	and still much faster than athlon machine.
>
>3. On sis machine I am using a separete ati agp card
>	not the built in one and as a result
>	i am using all memory.
>
>You would expect AMD machines to be at least
>slightly faster because cpu speed ratio are
>about 2 or bigger.   You might not expect
>linear scaling but at least faster you know.
>
>Also as I said kernel compilation time
>scales almost linearly with cpu speed
>
>
>
>On Fri, Apr 26, 2002 at 09:49:31AM -0400, P.J. Josh Rovero wrote:
>
>>A fairer test would be to equip the machines with equivalent
>>disk (rpms and number) and RAM (amount and speed) configurations.
>>
>>SiS motherboards, particularly with on-board video, tend
>>to be lower performance than boards with separate AGP/PCI
>>video.
>>
>>postgres@vrane.com wrote:
>>
>>>Hi
>>>
>>>I would like to upgrade my production pg server from a machine with
>>>following specs
>>>	celeron 900MHz, intel 810 motherboard, 512MB
>>>	pc 133 sdram memory,
>>>	PGDATA is on 2 ide 7200rpm drives under software raid 1,
>>>	linux kernel 2.4.18
>>>
>>.
>>.
>>.
>>
>>>My workstation specs is amd 1.33GHz, 192MB SDRAM, SIS motherboard,
>>>$PGDATA is on a single 5400rpm drive.  
>>>
>>-- 
>>P. J. "Josh" Rovero                                 Sonalysts, Inc.
>>Email: rovero@sonalysts.com    www.sonalysts.com    215 Parkway North
>>Work: (860)326-3671 or 442-4355                     Waterford CT 06385
>>***********************************************************************
>>
>
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