Linux 6.12 Through Linux 7.0 File-System Benchmarks For EXT4 + XFS

Written by Michael Larabel in Software on 13 March 2026 at 10:00 AM EDT. Page 2 of 7. 20 Comments.

👁 Flexible IO Tester benchmark with settings of Type: Random Read, Engine: IO_uring, Direct: No, Block Size: 4KB, Job Count: 32, Disk Target: Default Test Directory. EXT4 was the fastest.

👁 Flexible IO Tester benchmark with settings of Type: Random Read, Engine: IO_uring, Direct: Yes, Block Size: 4KB, Job Count: 32, Disk Target: Default Test Directory. EXT4 was the fastest.

With the random read performance under FIO, both file-systems have gradually improved over these kernel releases since late 2024. A nice and steady upward trajectory in random read performance with the kernel progression.

👁 Flexible IO Tester benchmark with settings of Type: Random Write, Engine: IO_uring, Direct: No, Block Size: 4KB, Job Count: 32, Disk Target: Default Test Directory. XFS was the fastest.

For 4K random writes when not using direct writes, the performance has, unfortunately, dipped on the newer Linux kernel releases.

👁 Flexible IO Tester benchmark with settings of Type: Random Write, Engine: IO_uring, Direct: Yes, Block Size: 4KB, Job Count: 16, Disk Target: Default Test Directory. EXT4 was the fastest.

👁 Flexible IO Tester benchmark with settings of Type: Random Write, Engine: IO_uring, Direct: Yes, Block Size: 4KB, Job Count: 32, Disk Target: Default Test Directory. EXT4 was the fastest.

But with direct random writes, the newer Linux kernels have brought some nice improvements particularly for Linux 6.19+ with both EXT4 and XFS.

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URL: https://www.phoronix.com/review/linux-612-linux-70-xfs-ext4/2

⇱ Linux 6.12 Through Linux 7.0 File-System Benchmarks For EXT4 + XFS - Phoronix

Linux 6.12 Through Linux 7.0 File-System Benchmarks For EXT4 + XFS