Opteron kernel

Donald Becker becker at scyld.com
Tue Nov 25 15:05:55 EST 2003


On Mon, 24 Nov 2003, Derek Richardson wrote:

> Does anyone know where to find info on tuning the linux kernel for 
> Opterons?  Googling hasn't turned up much useful information.

What type of tuning?
PCI bus transactions (the Itanium required more, but the Opteron still
benefits)?  Scheduling?  Processor affinity?  What kernel version?
If you ask specific questions, there is likely someone on the list that
knows the specific answer.

The easiest performance improvement comes from proper memory DIMM
configuration to match the application layout.  Each processor has its
own local memory controller, and understanding how the memory slots are
filled and the options e.g. interleave can make a 30% difference on a
dual processor system.

-- 
Donald Becker				becker at scyld.com
Scyld Computing Corporation		http://www.scyld.com
914 Bay Ridge Road, Suite 220		Scyld Beowulf cluster system
Annapolis MD 21403			410-990-9993

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