EM64T and linux

[Vince Hillier]

Dave Cramer wrote:

>
> On 28-Apr-06, at 7:33 PM, Vince Hillier wrote:
>
>> Christopher Browne wrote:
>>
>>> On 4/28/06, Phillip Qin <Phillip.Qin-szgMhqSEIEG+XT7JhA+gdA at public.gmane.org> wrote:
>>>
>>>> But all the servers Dell offers use the EM64T. I have no choice.  
>>>> The port
>>>> does say "The port consists of kernels for all AMD 64bit CPUs  with 
>>>> AMD64
>>>> extension and all Intel CPUs with EM64T extension, and a common  64bit
>>>> userspace.".
>>>
>>>
>>> Well, then, that strikes me as an excellent reason to NOT buy  
>>> servers from Dell.
>>
>>
>>
>> That's pretty black and white no?  The 64 bit processors run 32 bit  
>> code fine.
>>
>>>
>>> We stopped doing it a while back because they were severely  
>>> underperforming.
>>
>>
>> I'd like to see "serverly" defined, as they're not that bad.
>
> Dell servers are what they are, they don't perform well for  
> postgresql. This is a well known fact. The reason is because their  
> disk I/O is very poor. Disk I/O affects all applications.
>
> For the same money you can get much better hardware. But it's your  
> money Chris is giving you the benefit of the experience of a company  
> that uses a lot of servers. You can choose to accept this charity or  
> not... 


Phillip is looking for a web server, not a postgres server.  I've yet to 
see a site that would degrade a dell due to I/O issues. Your frontends 
should be doing minimal seeking, if they aren't, you need a new system 
architect.

Backends are a whole different discussion.

Advice much appreciated... Charity?  Move along... move along.
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