Guidance Needed! Initial LinuxCNC/PncConf setup

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3 years 8 months ago #265246 by PCW
The single core thing is probably a BIOS option

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3 years 8 months ago #265248 by Sray69
I do not see anything in bios that is related to that. Hmm

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3 years 8 months ago #265255 by Sray69
Well I have researched this issue and have come up with no solutions.

I thought maybe I had implemented the isolcpus command at some point but I could not find any evidence of that. I wonder if I were to use that to enable all cpu's at boot if that would turn them on?

Can someone tell me how to add this to my boot process?

If not, I wonder if wiping the computer and doing a fresh install will fix this?

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3 years 8 months ago #265257 by Sray69
I ran the following command:
sudo dmidecode -t 4

And the results shown at the bottom shows 6 cores as Active.
 

Attachment not found



Am I reading this correctly? How do I tell for sure what cores are active?
 

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3 years 8 months ago #265264 by PCW
Sounds like all cores are enabled

latency histogram does this:

set cores "1_core"
catch {set cores "$procinfo(cpu_cores) cores"};# item may not exist
catch {set cores "[exec getconf _NPROCESSORS_ONLN] cores"};# could fail?

I don't have procinfo on my test machine but the second succeeds:

getconf _NPROCESSORS_ONLN

Does that work on your machine?

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3 years 8 months ago #265272 by Sray69
Input:
getconf _NPROCESSORS_ONLN

Result:
1

What does this mean? What do I need to do next?

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3 years 8 months ago #265274 by PCW
What happens if you run top and hit "1" ?

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3 years 8 months ago #265277 by Sray69

What happens if you run top and hit "1" ?
 

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3 years 8 months ago #265279 by PCW
Only one CPU is running, weird....

what does

cat /proc/cmdline

print?

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3 years 8 months ago #265280 by Sray69

Only one CPU is running, weird....

what does

cat /proc/cmdline

print?
 

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