On 03/03/16 12:33, Henrique de Moraes Holschuh wrote:
please do away with
*both* the msr.ko and the intel_rapl.ko drivers, and reboot on the new
microcode...
Does it fix anything?
Sadly not.
If it doesn't, please run this:
rgrep . /sys/devices/system/cpu/intel_pstate
(that's a dot as the second parameter). But something messing with
intel_pstate would be a *long* shot...
/sys/devices/system/cpu/intel_pstate/max_perf_pct:100
/sys/devices/system/cpu/intel_pstate/no_turbo:0
/sys/devices/system/cpu/intel_pstate/min_perf_pct:36
This is the same on both old and new microcodes, both degraded and not.
One thing I've now seen a couple of times with the new microcode, is a
down-clocking state around ~900MHz (lower than the old microcode ever
went). From this frequency, full performance *is* recoverable by
increasing load.
$ grep MHz /proc/cpuinfo
cpu MHz : 903.808
cpu MHz : 899.121
cpu MHz : 900.097
cpu MHz : 896.582
cpu MHz : 900.390
cpu MHz : 903.222
cpu MHz : 900.195
cpu MHz : 900.097
cpu MHz : 900.097
cpu MHz : 900.097
cpu MHz : 900.000
cpu MHz : 901.367
cpu MHz : 901.269
cpu MHz : 905.273
cpu MHz : 906.054
cpu MHz : 898.535
cpu MHz : 901.367
cpu MHz : 901.855
cpu MHz : 900.195
cpu MHz : 900.976
cpu MHz : 901.171
cpu MHz : 898.828
cpu MHz : 900.683
cpu MHz : 898.925
Stuart
