Exchange space expansion

1. Exchange space

Swap space is a mechanism used by the operating system to expand available memory. It can continue to run when there is insufficient memory, avoiding program crashes or system freezes!

Note: The access speed of swap space is much lower than that of physical memory

2. Swap space expansion

sudo systemctl disable nvzramconfig
sudo fallocate -l 8G /var/8GB.swap
sudo mkswap /var/8GB.swap
sudo swapon /var/8GB.swap
echo "/var/8GB.swap none swap sw 0 0" | sudo tee -a /etc/fstab

2.1. Disable ZRAM swap configuration

Disable ZRAM swap configuration on Jetson devices: ZRAM compresses and stores memory pages in memory to reduce reliance on disk.

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sudo systemctl disable nvzramconfig

2.2, Create 8GB file

Use fallocate to create a file of 8GB in size, located in the /var/8GB.swap path.

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sudo fallocate -l 8G /var/8GB.swap

2.3. Set the swap space format

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sudo mkswap /var/8GB.swap

2.4. Enable swap space

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sudo swapon /var/8GB.swap

2.5. Permanently start swap space

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echo "/var/8GB.swap none swap sw 0 0" | sudo tee -a /etc/fstab

3. Verify the expansion

After restarting the system, the system swap space increases to 8GB: