On Wed, Apr 19, 2023 at 3:33 PM Limonciello, Mario <Mario.Limonciello@xxxxxxx> wrote: > > [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 Hi, I tested on affected server, the tctl output looks normal now. Thx for quick reply. > > 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,
