Red Hat Training
A Red Hat training course is available for Red Hat Enterprise Linux
2.14. pqos
The pqos utility, which is available from the intel-cmt-cat package, enables you to both monitor and control CPU cache and memory bandwidth on recent Intel processors. You can use it for workload isolation and improving performance determinism in multitenant deployments.
It exposes the following processor capabilities from the Resource Director Technology (RDT) feature set:
- Monitoring
- Last Level Cache (LLC) usage and contention monitoring using the Cache Monitoring Technology (CMT)
- Per-thread memory bandwidth monitoring using the Memory Bandwidth Monitoring (MBM) technology
- Allocation
- Controlling the amount of LLC space that is available for specific threads and processes using the Cache Allocation Technology (CAT)
- Controlling code and data placement in the LLC using the Code and Data Prioritization (CDP) technology
Use the following command to list the RDT capabilities supported on your system and to display the current RDT configuration:
#pqos --show --verbose
Additional Resources
- For more information about using pqos, see the pqos(8) man page.
- For detailed information on the CMT, MBM, CAT, and CDP processor features, see the official Intel documentation: Intel® Resource Director Technology (Intel® RDT).
