i5-8250U laptop for Linuxcnc with ethernet
- tommylight
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29 Apr 2020 17:45 #166112
by tommylight
Replied by tommylight on topic i5-8250U laptop for Linuxcnc with ethernet
Hyperthreading was and still is some sh@t that is being showed down peoples throats since the age of Pentium 4, it did not have any advantage then or now, it just makes things slower each core acting as 2 !
Talot, those numbers look very good, but you still have some excursions that might cause issues.
It would be nice if you could wait for PCW to have a look at those screenshots.
Talot, those numbers look very good, but you still have some excursions that might cause issues.
It would be nice if you could wait for PCW to have a look at those screenshots.
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29 Apr 2020 17:58 - 29 Apr 2020 17:58 #166116
by taloot
Replied by taloot on topic i5-8250U laptop for Linuxcnc with ethernet
i will try to remove those red numbers,
laptop have nvidia gpu mx150
laptop have nvidia gpu mx150
Last edit: 29 Apr 2020 17:58 by taloot.
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29 Apr 2020 18:04 #166118
by taloot
btw this code doesnt show the red numbers
Replied by taloot on topic i5-8250U laptop for Linuxcnc with ethernet
Open terminal, type:
latency-histogram --nobase
Get us a screenshot.
btw this code doesnt show the red numbers
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29 Apr 2020 18:07 #166119
by taloot
Replied by taloot on topic i5-8250U laptop for Linuxcnc with ethernet
the problem from power managment,,, any idea how can i disable it
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29 Apr 2020 18:08 #166120
by tommylight
Replied by tommylight on topic i5-8250U laptop for Linuxcnc with ethernet
You do not need the base thread, just the servo thread. But having the test run both can interfere with the servo results.
That is why it is much better if you test just the servo thread.
That is why it is much better if you test just the servo thread.
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29 Apr 2020 19:17 #166129
by taloot
Replied by taloot on topic i5-8250U laptop for Linuxcnc with ethernet
thanks for your clarification,,
but the red numbers,, what does it mean
but the red numbers,, what does it mean
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29 Apr 2020 19:32 #166131
by PCW
Replied by PCW on topic i5-8250U laptop for Linuxcnc with ethernet
it just means that some of the results exceeded the domain of the plot
You can increase the plot span to avoid this:
latency-histogram --nobase --sbinsize 200
( latency-histogram --help for more info )
You can increase the plot span to avoid this:
latency-histogram --nobase --sbinsize 200
( latency-histogram --help for more info )
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29 Apr 2020 19:33 #166132
by bbsr_5a
Replied by bbsr_5a on topic i5-8250U laptop for Linuxcnc with ethernet
you can shut doen the SMI by smictrl
BUT THIS MAY get the Notbook to overheat and melt the CPU
did you try to run the system on only one core
isocpu
BUT THIS MAY get the Notbook to overheat and melt the CPU
did you try to run the system on only one core
isocpu
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29 Apr 2020 20:33 #166140
by taloot
im building the kernel,.,, i will change it from xconfig
Replied by taloot on topic i5-8250U laptop for Linuxcnc with ethernet
you can shut doen the SMI by smictrl
BUT THIS MAY get the Notbook to overheat and melt the CPU
did you try to run the system on only one core
isocpu
im building the kernel,.,, i will change it from xconfig
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29 Apr 2020 21:02 - 29 Apr 2020 21:03 #166147
by PCW
Replied by PCW on topic i5-8250U laptop for Linuxcnc with ethernet
Note that as long as you can reliably meet the 1 ms servo thread deadline
with a few 100 usec to spare, there is no advantage to futzing around to get
the minimum latency as it simply does not matter (at least with most hardware interfaces)
with a few 100 usec to spare, there is no advantage to futzing around to get
the minimum latency as it simply does not matter (at least with most hardware interfaces)
Last edit: 29 Apr 2020 21:03 by PCW.
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