# Enabling & Increasing Raspberry Pi Swap

> **Note: Due to RAM limitations on the Raspberry Pi 3 and earlier, we now recommend ALL users use Neblio with a Raspberry Pi 4. Any Raspberry Pi 4 model should work, the models with more RAM are more future-proof for running Neblio.**

Users of Neblio who stake on Raspberry Pis earlier than the Raspberry Pi 3 (such as the Original Raspberry Pi, Raspberry Pi Zero, and potentially the Raspberry Pi 2) may benefit from a significant increase in performance by enabling and/or increasing the size of the Raspberry Pi's swap file.

To enable the Raspberry Pi swap file and set it to a size of 1 GB (1024 MB), run the following commands on the Raspberry Pi in a terminal window:

## 1. Temporarily Stop Swap

```bash
sudo dphys-swapfile swapoff
```

## 2. Modify the size of the swap

As root, edit the file /etc/dphys-swapfile and modify the variable CONF\_SWAPSIZE to 1024:

```bash
CONF_SWAPSIZE=1024
```

Using a command such as:

```bash
sudo nano /etc/dphys-swapfile
```

## 3. Initialize Swap File

```bash
sudo dphys-swapfile setup
```

## 4. Start Swap

```bash
sudo dphys-swapfile swapon
```

## Note

Using a swap file could potentially result in an increase in writes & reads to your Raspberry Pi's SD card, possibly lowering the lifespan of the card. However in most cases Raspbian ships with a default swap file with a size of 100 MB and in this case we are simply increasing that to 1024 MB.
