System usage
This page describes a simple script that helps gather memory, CPU and GPU usage of a program.
Logger tool
The following script start a program and periodically log the CPU, the memory and GPU usage of it. Replace the $PROGRAM variable with the command you want to monitor.
logger.sh
# Define your program to run
PROGRAM="./benchmark_model"
# Output log file
OUTPUT_LOG="usage_log.csv"
# Start the program with any arguments passed to this script, then capture its PID.
$PROGRAM "$@" &
PID=$!
# Write CSV header including GPU usage
echo "Timestamp,CPU(%),MEM(%),RSS(Bytes),GPU(%)" > $OUTPUT_LOG
# Log resource usage every 0.1 seconds until the program exits
while ps -p $PID > /dev/null; do
TIMESTAMP=$(date +"%Y-%m-%d %H:%M:%S")
CPU=$(ps -p $PID -o %cpu --no-headers | awk '{print $1}')
MEM=$(ps -p $PID -o %mem --no-headers | awk '{print $1}')
RSS_KB=$(ps -p $PID -o rss --no-headers | awk '{print $1}')
RSS_BYTES=$((RSS_KB * 1024))
# Find a way to compute GPU usage. Depeds on the target and of the accelerator
GPU="N/A"
echo "$TIMESTAMP,$CPU,$MEM,$RSS_BYTES,$GPU" >> $OUTPUT_LOG
sleep 0.1
done
echo "Resource usage logged to $OUTPUT_LOG"Usage
Supposed that the previous script is sored in a file named logger.sh.
To use this script you simply need to run it. You may add any parameters that the $PROGRAM needs :
./logger.sh -my parametersThe output of the programme is a file named usage_log.csv.
Format of the output file
The usage_log.csv contains the following collums :
| Collum name | Description |
|---|---|
| Timestamp | Time at which the measure was performed |
| CPU(%) | The usage of the CPU, varied between 0% and number of cores * 100% |
| MEM(%) | The percentage of the RAM used |
| RSS(%) | The number of RAM bytes used |
| GPU(%) | The percentage of the GPU usage |
⚠️
Accelerator: The GPU collumn may be used to place any hardware accelerator usage. The only requiremnt is to have a command that return the usage of the accelerator for the given PID.