Linux 6.18 LTS vs. Liquorix Kernel On AMD Ryzen Threadripper Workstation Performance

Written by Michael Larabel in Software on 8 January 2026 at 10:00 AM EST. Page 2 of 5. 16 Comments.

Interestingly with the LevelDB benchmarks the Liquorix kernel was providing some nice throughput and latency advantages for this database test. Liquorix does continue employing the Kyber I/O scheduler by default, among other changes that may explain the I/O benefits.

👁 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. Linux 6.18 Upstream 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. Linux 6.18 Upstream was the fastest.

👁 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. Linux 6.18 Upstream 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. Linux 6.18 Upstream was the fastest.

👁 Flexible IO Tester benchmark with settings of Type: Sequential Read, Engine: IO_uring, Direct: No, Block Size: 2MB, Job Count: 32, Disk Target: Default Test Directory. 6.18.2-2-liquorix was the fastest.

👁 Flexible IO Tester benchmark with settings of Type: Sequential Write, Engine: IO_uring, Direct: No, Block Size: 2MB, Job Count: 32, Disk Target: Default Test Directory. 6.18.2-2-liquorix was the fastest.

Though when it came to various FIO runs, the upstream Linux 6.18 LTS kernel was performing better than the downstream Liquorix flavor.

👁 Sockperf benchmark with settings of Test: Throughput. Linux 6.18 Upstream was the fastest.

👁 Sockperf benchmark with settings of Test: Latency Ping Pong. Linux 6.18 Upstream was the fastest.

👁 Sockperf benchmark with settings of Test: Latency Under Load. 6.18.2-2-liquorix was the fastest.

The upstream Linux 6.18 kernel was performing the best with the Sockperf network socket benchmarks except for a big advantage to Liquorix when it came to the latency under load.

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URL: https://www.phoronix.com/review/linux-618-liquorix/2

⇱ Linux 6.18 LTS vs. Liquorix Kernel On AMD Ryzen Threadripper Workstation Performance - Phoronix

Linux 6.18 LTS vs. Liquorix Kernel On AMD Ryzen Threadripper Workstation Performance