ZFS is a filesystem that provides advanced features such as data compression, snapshotting, and data deduplication. One of the key features of ZFS is the Adaptive Replacement Cache (ARC), which is a memory-based cache that stores frequently accessed data and improves the performance of the filesystem.
To set up the ZFS ARC size on Ubuntu or Debian Linux, follow these steps:
To install ZFS on Ubuntu or Debian, run the following command:
rt refeo:lautturi.comsudo apt install zfsutils-linux
Before you can set the size of the ZFS ARC, you need to determine the amount of available memory on your system. You can use the free command to view the amount of available memory:
free -m
This will show the total amount of physical and virtual memory, as well as the amount of used and available memory.
To set the size of the ZFS ARC, you can use the zfs set command. For example, to set the ARC size to 1 GB, use the following command:
sudo zfs set recordsize=1G
Keep in mind that the ARC size should not exceed the available memory on your system.
To verify the ARC size, you can use the zfs get command. For example, to view the ARC size for the tank pool, use the following command:
sudo zfs get recordsize tank
This will show the ARC size for the tank pool.