Am Mi., 23. Dez. 2020 um 11:41 Uhr schrieb Jan Engelhardt <jengelh@xxxxxxx>: > > > On Tuesday 2020-12-22 04:58, Guenter Roeck wrote: > >On 12/21/20 5:45 PM, Gabriel C wrote: > >> Hello Guenter, > >> > >> while trying to add ZEN3 support for zenpower out of tree modules, I find out > >> the in-kernel k10temp driver is broken with ZEN3 ( and partially ZEN2 even ). > > > >[...] since I do not have time to actively maintain > >the driver, since each chip variant seems to use different addresses and scales, > >and since the information about voltages and currents is unpublished by AMD, > >I'll remove support for voltage/current readings from the upstream driver. > > I support that decision. > > /proc/cpuinfo::AMD Ryzen 7 3700X 8-Core Processor, fam 23 model 113 step 0 > > A synthetic load (perl -e '1 while 1') x 16 shows: > Adapter: PCI adapter > Vcore: +1.28 V > Vsoc: +1.02 V > Tctl: +94.8°C > Tdie: +94.8°C > Tccd1: +94.8°C > Icore: +76.00 A > Isoc: +6.75 A > > A BOINC workload on average: > k10temp-pci-00c3 > Adapter: PCI adapter > Vcore: +1.17 V > Vsoc: +1.02 V > Tctl: +94.9°C > Tdie: +94.9°C > Tccd1: +95.0°C > Icore: +88.00 A > Isoc: +8.00 A > > The BOINC workload, when it momentarily spikes: > Adapter: PCI adapter > Vcore: +1.32 V > Vsoc: +1.02 V > Tctl: +94.1°C > Tdie: +94.1°C > Tccd1: +96.0°C > Icore: +105.00 A > Isoc: +7.75 A > > For a processor sold as a 65 W part, observing reported sensors as > 88 A x 1.17 V + 8 A x 1.02 V = 111.12 W just can't be. We are off by a > factor of about 2. Just before I forget, even with 100% correct code you could still be off by a factor of 2 with a broken BIOS or a vendor who is trying to bypass AMD spec limits. See as an example this topic: https://cutt.ly/7h1bT48 Best Regards, Gabriel C
