Re: 2 x quad core or 4 x dual core? - server sizing

I've thought of this - but only one of my customers have tried this and
it did not perform as
expected (each core not being as fast as cores from the quad cores).
The performance was so bad that they scrapped the server.
I didn't have an opportunity to examine this (the problem might not have
anything to do
with the CPU's) - and I'm just being cautious.

Best regards
Martin Berg

On 01/11/2011 10:17 AM, Zhu,Chao wrote:
> Why not go with 2*6core instead since server price will be pretty much
> saem (just license will be diff), and gives you 50% capacity?
>
> On Tue, Jan 11, 2011 at 5:13 PM, gabi draghici
> <[email protected] <mailto:[email protected]>> wrote:
>
>     In addition to what Martin said (although the second point
>     alone would be enogh ;) ) don't forget the size of shared cache
>     level 3 wich is bigger for the quads !
>      
>     Best regards
>      
>     D. Gabriel
>
>     On Tue, Jan 11, 2011 at 10:59 AM, Martin Berg <[email protected]
>     <mailto:[email protected]>> wrote:
>
>         And good morning to you.
>
>         I would go for the 2 quad core configuration for following
>         reasons:
>
>         - Capacity per core:
>         I may be wrong (and I don't have time to investigate now), but
>         as far as I remember the newer
>         Intel archectures (like the Nehalem) are not available in
>         2-core versions.
>         The newer Intel CPU architectures are according to my
>         experiences significantly more efficient
>         per clock cycle than the older architectures (and I'm not
>         talking about 10%) when using Oracle.
>         This higher efficiency results in the highest capacity per
>         core I've seen - even with the lower
>         clock frequency.
>         Staying with 2-core processors would therefore leave you with
>         the poorest performance
>         per core.
>
>         - Licensing
>         Using the 2 quad core configuration would allow you (assuming
>         that there are only 2 sockets in
>         the server) to use the Standard Edition One license at about
>         5k$ per socket (or 10k$ in total)
>         Using the 4 dual core configuration would require the Standard
>         Edition at about 15k$ per socket
>         (or 60k$ in total)
>         The bean counters may like this :-)
>
>         If you have a need for Enterprise Edition functionality this
>         point is of course irrelevant.
>
>
>         Best regards
>
>         Martin Berg
>
>
>
>         On 01/11/2011 08:07 AM, Vladimir Barac wrote:
>>
>>         Good morning, listers
>>
>>          
>>
>>         We are currently sizing servers for new Oracle / SLES
>>         project. HP Proliant hardware is being considered.
>>
>>          
>>
>>         Could somebody explain, with as much details as possible,
>>         which one would better option - server with 4 dual core Xeon
>>         CPUs or server with 2 quad core Xeon CPUs? The rest of the
>>         setup - memory, storage OS version - are same for both options.
>>
>>          
>>
>>         Servers would be primarily used for OLT Oracle workload (SAP
>>         database). Few hundred concurrent users at peak time.
>>
>>          
>>
>>         Regards,
>>
>>         Vladimir Barac
>>
>>
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>
> -- 
> Regards
> Zhu Chao
>
>

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