FreeBSD 15.0 Benchmarks Versus FreeBSD 14.3 On AMD EPYC

Written by Michael Larabel in Operating Systems on 4 December 2025 at 12:20 PM EST. Page 5 of 5. 9 Comments.

👁 iPerf benchmark with settings of Server Address: localhost, Server Port: 5201, Duration: 60 Seconds, Test: UDP, 1000Mbit Objective, Parallel: 64. FreeBSD 14.3 was the fastest.

👁 iPerf benchmark with settings of Server Address: localhost, Server Port: 5201, Duration: 60 Seconds, Test: UDP, 10000Mbit Objective, Parallel: 64. FreeBSD 14.3 was the fastest.

👁 iPerf benchmark with settings of Server Address: localhost, Server Port: 5201, Duration: 60 Seconds, Test: UDP, 1000Mbit Objective, Parallel: 128. FreeBSD 14.3 was the fastest.

Some letdowns in benchmarking iPerf on the localhost.

👁 iPerf benchmark with settings of Server Address: localhost, Server Port: 5201, Duration: 60 Seconds, Test: UDP, 10000Mbit Objective, Parallel: 128. FreeBSD 14.3 was the fastest.

👁 iPerf benchmark with settings of Server Address: localhost, Server Port: 5201, Duration: 60 Seconds, Test: TCP, Parallel: 1. FreeBSD 15.0 was the fastest.

👁 iPerf benchmark with settings of Server Address: localhost, Server Port: 5201, Duration: 60 Seconds, Test: TCP, Parallel: 64. FreeBSD 14.3 was the fastest.

The main takeaways from this initial round of testing for FreeBSD 15.0 vs. FreeBSD 14.3 on AMD EPYC at least was not much in the way of performance differences aside from noticeably slower code compilation performance on FreeBSD 15.0 and then some wins for kernel micro-benchmarks. But those kernel micro-benchmark wins with Stress-NG hadn't translated to any visible gains for real-world workloads across the dozens of initial benchmarks conducted.

👁 Geometric Mean Of All Test Results benchmark with settings of Result Composite, FreeBSD 15.0 Benchmarks vs. FreeBSD 14.3. FreeBSD 14.3 was the fastest.

In more than 130 benchmarks conducted on this AMD EPYC 9655P Supermicro server build between FreeBSD 14.3 and FreeBSD 15.0, the performance was flat overall. FreeBSD 15.0 benchmarks on more hardware as well as a cross-BSD/Linux comparison are currently ongoing at Phoronix for future articles.

👁 FreeBSD 15.0 on AMD EPYC server

While the performance was flat, FreeBSD 15.0 was running well on this 5th Gen AMD EPYC "Turin" server without any functional issues or stability problems to note.

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URL: https://www.phoronix.com/review/freebsd-15-amd-epyc/5

⇱ FreeBSD 15.0 Benchmarks Versus FreeBSD 14.3 On AMD EPYC - Phoronix

FreeBSD 15.0 Benchmarks Versus FreeBSD 14.3 On AMD EPYC