Showing posts with label tool. Show all posts
Showing posts with label tool. Show all posts

Friday, December 1, 2023

Intel PQOS tool

This can be used to measure cache misses and cache bandwidth.


Steps to install and run

1. Checkout code from  https://github.com/intel/intel-cmt-cat/tree/master

2. cd  to ./intel-cmt-cat/

3. Run pqos

./pqos/pqos -T

./pqos/pqos -r


Typical output shows 

 CORE         IPC      MISSES     LLC[KB]   MBL[MB/s]   MBR[MB/s]


CORE - Processor core

IPC - IPC count

MISSES - LLC Misses

LLC[KB] - LLC Bandwidth in KB

MBL[MB/s] - Bandwidth between LLC and DDR

MBR[MB/s] - Bandwidth between LLC in different core and DDR







Tuesday, November 21, 2023

Perf Tool

 Perf tool permission issue in new Linux Kernel

Solution: Update permission

    sudo sysctl kernel.perf_event_paranoid=-1