Multi-core CPUs - kernel vs kernel-smp

Andrew Bacchi bacchi at
Fri Oct 12 13:22:25 UTC 2007

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> <mailto:clarkp at> "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

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

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