Red Hat Bugzilla – Bug 436062
BIOS Parameters Section of the HOWTO needs completion
Last modified: 2013-10-23 19:06:58 EDT
Description of problem:
BIOS parameters need completion. Leaving out of the Tuning Guide for now.
Assigned to Clark for re-assigning as you see fit :)
Hmmm, BIOS parameters are a wildly differing collection of stuff. I'm going to
assign this one to Luis, but CC Steven, Peter and Arnaldo, since I'm sure they
have opionions on this.
This is a friendly reminder :) LKB
I think there are really only two things we can address here:
1. NUMA issues
In both cases, we will have to write in generalities, since different BIOS
vendors use different terms, have different interfaces, etc. to address these
The NUMA issue is when you're running on a NUMA machine (e.g. HP DL585) and your
application is not NUMA-aware, you want to set the system to be "memory
interleaved" rather than leaving it NUMA. We may want to get some additional
information from lwoodman on how to describe this.
The SMI issue is not something that's easily handled. I suspect we'll have to
say something like "Go into your BIOS setup screen and see if System Mangement
Interrupts or SMIs are mentioned. If they are, turn them off for more
deterministic behavior". Not even positive that *any* vendor offers that option
This has not been included in the current document due to lack of information. If it is still required please open a new bug with source information.