Table of Contents

Swap behavior
Network

Tuning

Swap behavior

Set swappiness to 10 in /etc/sysctl.conf or /etc/sysctl.d/99-webserver-tuning.conf:
```
vm.swappiness=10
```

Save the file, then:

sudo sysctl --system
cat /proc/sys/vm/swappiness

Network

Test performance

Install iperf on client and host machine
```
sudo apt install iperf3 iotop
```
Open firewall on host
```
ufw allow 5201
```

Test network from client to host

iperf3 -s # on host
iperf3 -c <host> # on client

Test disk access
```
iotop
```

Speedtest

Remove speedtest-cli if you have previously installed it:
```
sudo apt remove speedtest-cli
```
Install python-pip on Python v3:
```
sudo apt install python3-pip
```

Install and run speedtest:

sudo pip3 install speedtest_cli
speedtest-cli

CPU and IO priorities

IO priority

ionice -c scheduling_class -n priority_nice_value command
ionice -c 3 cp /home/user/largefile /Backups

Links