Higher CPU temperatures on 26.07 with an AMD CPU
After upgrading to pfSense Plus 26.07 on my custom box running an AMD Ryzen CPU, idle temperature increased from roughly 40C to 60-65C while the CPU was 99% idle.
FreeBSD 16 enables the new hwpstate_amd CPPC support. On this system, every logical CPU showed desired_performance set to maximum and EPP 0 by default. FreeBSD documents this as the intentional initial behaviour to avoid performance regressions:
https://www.freebsd.org/status/report-2026-01-2026-03/cppc/
I set desired_performance=0 (autonomous mode) and EPP to 128. Then running some tests, including 3Gb/s of sustained traffic through the box the CPU still boosted appropriately. PPPoE, Suricata, Unbound, ntopng, and gateway monitoring remained healthy during the test. CPU went up to 7% and only raised the temparature to 43C, which immediately went back to 41C.
Just posting this as an observation and am curious whether anyone else running 26.07 on recent AMD hardware is seeing the same change in idle temperatures.
FreeBSD shipping a new CPPC driver with every supported CPU defaulting to maximum performance policy, before powerd or a supported management path can actually control it, seems like a poor production default for systems that could spend a lot of their time at idle.