Editing XFS (section)

===Allocation groups===
XFS file systems are internally partitioned into ''allocation groups'', which are equally sized linear regions within the file system. [[Computer file|Files]] and directories can span allocation groups. Each allocation group manages its own [[inode]]s and free space separately, providing scalability and parallelism so multiple threads and processes can perform I/O operations on the same file system simultaneously.

This architecture helps to optimize parallel I/O performance on systems with multiple processors and/or cores, as metadata updates can also be parallelized. The internal partitioning provided by allocation groups can be especially beneficial when the file system spans multiple physical devices, allowing optimal usage of throughput of the underlying storage components.