Cache-Allocation-Technology

Intel's Cache Allocation Technology

Intel’s Cache Allocation Technology (CAT) helps address shared resource concerns by providing software control of where data is allocated into the last-level cache (LLC), enabling isolation and prioritization of key applications.

Acronyms

CAT : Cache Allocation Technology

CMT : Cache Monitoring Technology

CDP : Code and Data prioritization

CLOS/COS : Class of service

Commands

Monitoring

Show current configuration

sudo pqos -s -v

Monitor LLC occupancy for group of cores (e.g. [0-2] and [3-5])

sudo pqos -m "all:[0-2],[3-5];"

Usage

F.A.Q.

When I try to run the utility I get the following error messages:

WARN: Error opening file '/dev/cpu/0/msr'!

ERROR: CDP detection error!

ERROR: Fatal error encounter in CAT discovery!

ERROR: discover_capabilities() error 1

Error initializing PQoS library!

Run the following command:

sudo modprobe msr