[SOLVED] Disabling CPU caches

xerces8 · 12-28-2015, 09:20 PM

Just a note: the MTRR method works fine (system is 100 times slower, I did not check any details, is there a good tool to detect caches?) on both 32 and 64 bit systems.

First run:

Code:

cat /proc/mtrr

to get a list of regions. The one or few segments that add up to the size of RAM are the correct ones to disable (on my system there were 00: 2GB, 01: 1GB and 02: 1GB).

Then run for each segment:

Code:

 echo disable=00 > /proc/mtrr

(replace 00 with the segment number)

ulmo · 01-04-2016, 02:30 AM

Thanks for posting your solution, xerces8. Unfortunately, I don't know of any tool to detect the presence of caches.