Re: [Powertop] Does PowerTop support MHz numbers for Intel Xeon L5410 CPUs ?

[Sergey Senozhatsky <sergey.senozhatsky at gmail.com>]

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On (07/07/14 13:13), Valentin Hoebel wrote:
> Hi,
> 
> thanks a lot for your efforts, I appreciate it.
> My co-worker applied your patch and sent me the following output:
> 
>   --------------------------------------------------
> /   ./powertop -t 1 --csv
>                                             ⏎
>

thanks! ok, so cpu model 0x17 is not listed as a supported one in
src/cpu/intel_cpus.cpp:intel_cpu_models[] to begin with, and no
C-states are initialized as a result. Let's wait for Intel devs
to add cpu/core/package models and corresponding C-states.

Alexandra, will you take care of this?

	-ss

> Loaded 0 prior measurements
> Cannot load from file /var/cache/powertop/saved_parameters.powertop
> check cpu model 0x17
> ERROR: not supported
> RAPL device for cpu 0
> RAPL device for cpu 0
> check cpu model 0x17
> ERROR: not supported
> check cpu model 0x17
> ERROR: not supported
> check cpu model 0x17
> ERROR: not supported
> check cpu model 0x17
> ERROR: not supported
> check cpu model 0x17
> ERROR: not supported
> check cpu model 0x17
> ERROR: not supported
> check cpu model 0x17
> ERROR: not supported
> check cpu model 0x17
> ERROR: not supported
> Cannot load from file /var/cache/powertop/saved_parameters.powertop
> Preparing to take measurements
>   unknown op '{'
> Taking 1 measurement(s) for a duration of 1 second(s) each.
> PowerTOP outputing using base filename powertop.csv
> 
> \ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
> 
> I hope this helps.
> 
> Best regards
> Valentin
> 
> 
> 
> Am 07.07.2014 12:28, schrieb Sergey Senozhatsky:
> >On (07/07/14 19:26), Sergey Senozhatsky wrote:
> >>On (07/07/14 10:21), Valentin Hoebel wrote:
> >>>Hi,
> >>>
> >>>as you already guessed Debian still uses a 2.0 version.
> >>>However, I git cloned 2.6.1 and the "head" versions from GitHub, built them
> >>>both and tried them - still the same result.
> >>>
> >>>Is it known if this particular CPU model does not support reading out the
> >>>CPU frequency values or could this be another problem?
> >>
> >>hm... a *wild* guess. can you check what cpu model is getting passed to
> >>nhm_core::nhm_core(int model)? the problem might be (or might be not) that we
> >>don't set any of C-state flags. if none of C-states set, then no MSR work is
> >>getting done, and hence nothing is reported back. (yeah... we could check
> >>documentation, search the web, etc. but let's do it the lazy way).
> >>
> >>
> >>something like this
> >>
> >
> >oh. the patch is against the current upstream (iow, git) powertop source code.
> >
> >	-ss
> >
> >>NOTE:
> >>NOT TESTED, NOT EVEN COMPILE-TESTED. NOT A PATCH, NOT A FIX.
> >>FOR TESTING PURPOSE ONLY.
> >>
> >>---
> >>
> >>  src/cpu/intel_cpus.cpp | 7 +++++++
> >>  1 file changed, 7 insertions(+)
> >>
> >>diff --git a/src/cpu/intel_cpus.cpp b/src/cpu/intel_cpus.cpp
> >>index e3cdaf2..ae083cf 100644
> >>--- a/src/cpu/intel_cpus.cpp
> >>+++ b/src/cpu/intel_cpus.cpp
> >>@@ -64,10 +64,13 @@ int is_supported_intel_cpu(int model)
> >>  {
> >>  	int i;
> >>
> >>+	fprintf(stderr, "check cpu model 0x%X\n", model);
> >>+
> >>  	for (i = 0; intel_cpu_models[i] != 0; i++)
> >>  		if (model == intel_cpu_models[i])
> >>  			return 1;
> >>
> >>+	printf(stderr, "ERROR: not supported\n");
> >>  	return 0;
> >>  }
> >>
> >>@@ -91,6 +94,8 @@ nhm_core::nhm_core(int model)
> >>  {
> >>  	has_c2c7_res = 0;
> >>
> >>+	fprintf(stderr, "nhm_core model: 0x%X\n", model);
> >>+
> >>  	switch(model) {
> >>  		case 0x2A:	/* SNB */
> >>  		case 0x2D:	/* SNB Xeon */
> >>@@ -260,6 +265,8 @@ nhm_package::nhm_package(int model)
> >>  	has_c8c9c10_res = 0;
> >>  	has_c2c7_res = 0;
> >>
> >>+	fprintf(stderr, "nhm_package model: 0x%X\n", model);
> >>+
> >>  	switch(model) {
> >>  		case 0x2A:	/* SNB */
> >>  		case 0x2D:	/* SNB Xeon */
> >>
> 
> -- 
> Mit freundlichen Grüßen
> 
> Valentin Höbel
> Cloud Architect
> 
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