> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nexis.network/llms.txt
> Use this file to discover all available pages before exploring further.

# System Tuning

Your system will need to be tuned in order to run properly. Your validator may not start without the settings below.

Run the following commands in your machine:

```bash theme={null}
sudo bash -c "cat >/etc/sysctl.d/21-nexis-validator.conf <<EOF
# Increase UDP buffer sizes
net.core.rmem_default = 134217728
net.core.rmem_max = 134217728
net.core.wmem_default = 134217728
net.core.wmem_max = 134217728

# Increase memory mapped files limit
vm.max_map_count = 1000000

# Increase number of allowed open file descriptors
fs.nr_open = 1000000
EOF"
```

```bash theme={null}
sudo sysctl -p /etc/sysctl.d/21-nexis-validator.conf
```

paste the following in your terminal next:

```
LimitNOFILE=1000000
DefaultLimitNOFILE=1000000
```

once you are done with this, run the following

```
sudo systemctl daemon-reload
```

```
sudo bash -c "cat >/etc/security/limits.d/90-nexis-nofiles.conf <<EOF
# Increase process file descriptor count limit
* - nofile 1000000
EOF"
```

Voila! You have tuned your system now to run Nexis Validators , make sure you close the terminal and start a new one after following this guide!