AMD Confirms Linux Performance Marginality Problem Affecting Some, Doesn't Affect Epyc / TR

[sdack]

I have to admit I didn't read half the posts in this thread -- you're all embarrassing yourselves with public displays of ignorance -- but I'm not paying for "performance marginality" when they sold me XFR.

I smell another class-action lawsuit in the making. That'll learn 'em real good!

*lol* You're really angry about this, aren't you?

[Beherit]

Is there a bug in the ignore list function? I just added duby229 and sdack to mine, but still suffer having to filter their noise.

[sdack]

Is there a bug in the ignore list function? I just added duby229 and sdack to mine, but still suffer having to filter their noise.

I'll stop. Please, just don't threaten Phoronix with a class action lawsuit for the ignore function not working as expected.

[drSeehas]

Is there a bug in the ignore list function? ...

Yes.
Unfortunately for a very long time. :-(

[ThoreauHD]

Wendel is saying the same issue is present on the newest Intel systems, but it's just in conftest. So I guess we'll let them sort it out.

https://forum.level1techs.com/t/fyi-bunch-of-people-on-gentoo-forum-running-into-non-reproducible-segfaults-w-ryzen-cpus/116420/10

[shmerl]

Actually you can do this kind of stuff by suing a configuration file in /etc/sensors ou /etc/sensors.d but I do not remember the details. In this case the formula is no easy that I do it in my head. Note that the -20 C is only necessary for the X processors, like 1700X and 1800X. For a regular processor, like 1700, the temperature will be already correct. I forgot to mention that. Sorry.

I just did it for my setup. Here is an example how to do it (except I think they set second value incorrectly as negative, it should be reversed): https://wiki.archlinux.org/index.php...rature_offsets

First check your chip and sensor you want to adjust:

sensors -u

nct6779-isa-0290
...
SMBUSMASTER 0:
  temp7_input: 48.000

Then create something like this: /etc/sensors.d/asrock-x370-taichi.conf

chip "nct6779-isa-0290"
  compute temp7 @-20,@+20

Now SMBUSMASTER 0 reports correct CPU temperature:

sensors

...
SMBUSMASTER 0:          +28.0°C

You can also see man sensors.conf

For me the problem is that KDE thermal monitor plasmoid is ignoring these offsets.

[Windingroads]

I would think twice about believing a company that has taken from May until now to even own up
to the fact there was something wrong with their Ryzen chip, I read 39 pages on the AMD forum
of complaints, and endless examples of how to re create the problem.

I will wait until Phoronix tests the Threadripper, and the community subject it to the same tests
that showed the Ryzen for what it is, until then, I for One do not believe AMD, as I think it is no coincidence
that they only owned up right before the release of their Threadripper, and in doing so got sell the amazing
piece of news to us all that Threadripper is not sick like the Ryzen.

[alvez]

*lol* I'm no hypocrite, but you're a fear-mongerer. First you want AMD to confirm your worst fears, and when it's not happening, but they rather tell you it doesn't affect Windows and it's only a rare case found only under Linux, which we knew all along, do you choose not to believe AMD, but want to hold on to your fears. Very smooth of you ... *lol*

If I'm the one sitting in a cave then it sure isn't as dark as yours.

You're really aiming for debianxfce's crown, aren't you? Not an easy task, but I'm impressed with your performance so far.

[ermo]

I would think twice about believing a company that has taken from May until now to even own up
to the fact there was something wrong with their Ryzen chip, I read 39 pages on the AMD forum
of complaints, and endless examples of how to re create the problem.

I will wait until Phoronix tests the Threadripper, and the community subject it to the same tests
that showed the Ryzen for what it is, until then, I for One do not believe AMD, as I think it is no coincidence
that they only owned up right before the release of their Threadripper, and in doing so got sell the amazing
piece of news to us all that Threadripper is not sick like the Ryzen.

You do realize that intel has done the same thing multiple times in the past? ISTR that they sat on the Skylake HT crash bug for over a year.

This kind of behaviour is par for the course in this particular game I'm afraid.

[puleglot]

The CPU temperature is in SMBUSMASTER (with a 20 C offset).

Isn't this offset is only needed for internal CPU thermal sensor? I would expect that Super I/O chip is already showing the correct value.