[SOLVED] Specify a core to run a python script on. systemd

Issue

I have this systemd service:

[Unit]
Description=Toasty
After=multi-user.target

[Service]
WorkingDirectory=/mnt/data/Toasty
User=root
Group=root
ExecStart=/usr/local/bin/python3.5 /mnt/data/Toasty/run.py
Type=idle
Restart=always
RestartSec=2

[Install]
WantedBy=multi-user.target

What i want is the ability to specify a core for my python code to run on.

Solution

Try adding ExecStartPost=/path/to/taskset -cp 1 $MAINPID to your Install section.

[Unit]
Description=Toasty
After=multi-user.target

[Service]
WorkingDirectory=/mnt/data/Toasty
User=root
Group=root
ExecStart=/usr/local/bin/python3.5 /mnt/data/Toasty/run.py
ExecStartPost=/path/to/taskset -cp 1 $MAINPID
Type=idle
Restart=always
RestartSec=2

[Install]
WantedBy=multi-user.target

Answered By - Daniel

Answer Checked By - Willingham (WPSolving Volunteer)