search for: mtrr_gran_size

Good Day All, Today I looked at the dmesg log and I notice that the following messages regarding mtrr_gran_size/mtrr_chunk_size. I am currently running CentOS 6.3 and I installed CentOS 6.2 and 6.1 and I was seeing the same errors. When I installed CentOS 5.8 on the same laptop I do not see these errors. $ lsb_release -a LSB Version: :core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:pr...

..., I have server that has been running 5.x - 5.8 for a few years without issue and decided to move it to a fresh install of 6.2. First thing I noticed is a good part of the log has these mtrr messages finally ending with "mtrr_cleanup: can not find optimal value" and "please specify mtrr_gran_size/mtrr_chunk_size". I have been searching around and reading the kernel docs but are bit lost on the impact. The system CPU is a q6600 so it supports mtrr. It has 8gb of RAM and a G33 intel chipset (maximum memory is 8gb), 256mb onboard Intel video. Problem exists with DVD 6.2 kernel and late...

...um_reg: 7 lose cover RAM: 438M gran_size: 1G chunk_size: 1G num_reg: 4 lose cover RAM: 950M gran_size: 1G chunk_size: 2G num_reg: 4 lose cover RAM: 950M gran_size: 2G chunk_size: 2G num_reg: 3 lose cover RAM: 1974M mtrr_cleanup: can not find optimal value please specify mtrr_gran_size/mtrr_chunk_size -------------- use 16 GB ECC Ram on this server, all modules are the same (speed, manufacuer - Kingston, etc). Here are my questions: 1. o you know what disadventages this could make on server installation 2. what should I modify in server configuration to solve this problem?