Skip to content

Latest commit

 

History

History
53 lines (36 loc) · 1.05 KB

Profiling.md

File metadata and controls

53 lines (36 loc) · 1.05 KB
Raw

Profiling

Perf FlameGraphs

https://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html

Get code from GitHub:

git clone https://github.com/brendangregg/FlameGraph
cd FlameGraph

Sample system with perf:

sudo perf record -F 99 -a -g -- sleep 10
sudo perf script | ./stackcollapse-perf.pl > out.perf-folded
./flamegraph.pl out.perf-folded > perf.svg

Intel VTune

After installing VTune (on the monitoring device), set up the environment variables:

source <install-dir>/setvars.sh

Then start the VTune GUI:

vtune-gui

Sampling Driver

The source is located in the VTune Profiler installation directory <install_dir>/sepdk. For remote targets, the source is located in <install_dir>/target, which can be copied to the remote and extracted there.

The installation is described in sepdk/src/README.md.

cd /path/to/sepdk/src/  #/opt/intel/oneapi/vtune/latest/sepdk/src
./build-driver          #maybe sudo 
sudo ./rmmod-sep
sudo ./insmod-sep

Add user to vtune group:

sudo usermod -a -G vtune <username>