Dear experts on the list, We've noticed many of our EPYC Milan servers from different vendors (DELL and SMC) show 100 degrees, eg sudo sensors k10temp-pci-00c3 Adapter: PCI adapter Tctl: +117.5°C Tdie: +117.5°C Tccd1: +67.0°C Tccd2: +65.2°C Tccd3: +63.2°C Tccd4: +63.8°C Tccd5: +67.2°C Tccd6: +63.5°C Tccd7: +64.2°C Tccd8: +64.8°C sudo lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian Address sizes: 48 bits physical, 48 bits virtual CPU(s): 128 On-line CPU(s) list: 0-127 Thread(s) per core: 2 Core(s) per socket: 64 Socket(s): 1 NUMA node(s): 1 Vendor ID: AuthenticAMD CPU family: 25 Model: 1 Model name: AMD EPYC 7713P 64-Core Processor Stepping: 1 Frequency boost: enabled CPU MHz: 2479.705 CPU max MHz: 3720,7029 CPU min MHz: 1500,0000 BogoMIPS: 3992.43 Virtualization: AMD-V L1d cache: 2 MiB L1i cache: 2 MiB L2 cache: 32 MiB L3 cache: 256 MiB NUMA node0 CPU(s): 0-127 We've seen such high temperatures even on idle servers. We are running LTS kernel 5.10.136, but checking the git history for k10temp driver, I don't find any missing fix. My questions are: 1. Is it normal to have such high temperatures for tctl? can we trust the value? 2 Do we need to worry about such high temperatures? Thx! Jinpu Wang @ IONOS Cloud.
