Multi-core CPUs - kernel vs kernel-smp

[Allen, Jack]

	So does that mean the smp kernel defaultly supports more than
4GB of memory? That is there is nothing that needs to be done to use all
of say 8GB or 12GB of physical memory?

---
Jack Allen


-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com] On Behalf Of Pankaj Govil
Sent: Friday, October 12, 2007 2:25 PM
To: General Red Hat Linux discussion list; davidr at skyforge.net
Subject: RE: Multi-core CPUs - kernel vs kernel-smp

 
Also if you have a server with more than 4Gigs of RAM you will need to
use the smp kernel

Thx,

Pankaj Govil


-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com] On Behalf Of Andrew Bacchi
Sent: Friday, October 12, 2007 8:22 AM
To: davidr at skyforge.net; General Red Hat Linux discussion list
Subject: Re: Multi-core CPUs - kernel vs kernel-smp

My answer yesterday was to use the kernel-smp on multiple CPUs and
multicore single CPUs.  If you're using either of these you'll need the
kernel-smp.  In the case of a single, non multicore CPU, use the
"kernel" kernel.

What hardware are you considering for your web servers?  I have many
Dell and IBM servers, all with multi Xeon processors.  I'd think for a
web server that has a fair amount of traffic, you'd want at lease two
Dual-Core processors of > 2 Gh, and lots of RAM.

David Richards wrote:
> 
> Clark, Patti wrote:
>> Not being a kernel expert, when would one want to use kernel vs 
>> kernel-smp on a multi-core system?
>>
>> Patti Clark
>> Unix System Administrator - RHCT
>> Office of Scientific and Technical Information 
>> <mailto:clarkp at osti.gov> <mailto:clarkp at osti.gov> "The U.S.
>> Constitution doesn't guarantee happiness, only the pursuit of it. You

>> have to catch up with it yourself." - Benjamin Franklin
>>
>>   
> 
> Hi,
>      I need information on this too. I am current looking in to 
> "respeccing" our web servers and I don't know much about the 
> smp/dual-core kernel stuff. I guess i need to dig through google
> 
> David
> 

--
veritatis simplex oratio est
		-Seneca

Andrew Bacchi
Systems Programmer
Rensselaer Polytechnic Institute
phone: 518.276.6415  fax: 518.276.2809

http://www.rpi.edu/~bacchi/

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