I am trying to find out specifics about caches (in particular which caches are shared between cores and which are not) and have stumpled onto a inconsistency.
sudo lshw says
*-cache:0 description: L1 cache physical id: a slot: Internal Cache size: 64KiB capacity: 64KiB capabilities: synchronous internal write-back *-cache:1 description: L2 cache physical id: b slot: External Cache size: 8MiB capabilities: synchronous internal write-back
L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 8192K
I do not worry too much about instruction and data cache being added together, but where did L2 go?
Observed on a machine running Ubuntu 10.10, or to let
uname -a speak:
Linux name 2.6.35-32-generic #66-Ubuntu SMP Mon Feb 13 21:04:32 UTC 2012 x86_64 GNU/Linux
Unrelated bonus question: does
External Cache mean the cache is shared between the (four) cores (and
Internal Cache the opposite)?