[Nouveau] speed of card?

[Ilia Mirkin]

On Mon, Jun 19, 2017 at 1:32 PM, James <bjlockie at lockie.ca> wrote:
> On 2017-06-19 01:18 PM, Ilia Mirkin wrote:
>> cat /sys/kernel/debug/dri/0/pstate
>>
>> AC (or DC) line shows the current state.
>>
>> On Mon, Jun 19, 2017 at 1:00 PM, James <bjlockie at lockie.ca> wrote:
>>> I have a NVE7 (GK107).
>>> How do I see the current memory/CPU speed?
>
> $ sudo cat /sys/kernel/debug/dri/0/pstate
> 07: core 324 MHz memory 648 MHz
> 0a: core 540 MHz memory 1620 MHz
> 0f: core 1058 MHz memory 5000 MHz
> AC: core 324 MHz memory 648 MHz
>
> Wow, it defaults to the lowest.

Defaults to whatever state the VBIOS puts it into.

> Is there a way to change it?

echo 0a > /sys/kernel/...

Note that you really want to be on kernel 4.10 or so in order for this
to work well. (Working poorly = failure to reclock, or system hang
afterwards.)

  -ilia