[Public] Hi, > 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. It's fixed by this patch that will be going into 6.4. https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git/commit/?h=hwmon-next&id=1dc8e097967b69a56531c9ccb70b854771310e85 Guenter, If you didn't already send your 6.4 PR, can you please add Cc: stable@xxxxxxxxxxxxxxx to the patch in your tree? Thanks,
