latency test issues
12 Jan 2017 16:46 #85658
by AThayer
latency test issues was created by AThayer
I'm trying to run Linuxcnc on a laptop. I know its not suggested. I have a few questions before I give up on using a laptop. Why is it not suggested? Also I run the latency test using the laptop and and older version of EMC2 with great results (7500ns). I downloaded the newest version of linuxcnc using debian. Trying the test with the new version and I get 1200000ns. Why is this? Also is there anything I can do to improve the latency test on this laptop? As a side note the older versions are using Ubuntu as the OS. Any helpful suggestions and or comments welcome. Thank you
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12 Jan 2017 18:37 #85659
by tommylight
Replied by tommylight on topic latency test issues
What do you intend to use it for?
Not recomendet because they have a lot of power saving features, like reducing procesor clock, seting it ro idle, bus frequency, serila ATA power saving etc etc, all of that is not good for controling a machine.
Some can be used with a bit of tweaking, some are unusable.
If you can live with older versions of Lcnc all is good ( mostly ).
Also test the preempt-rt kernel version.
Not recomendet because they have a lot of power saving features, like reducing procesor clock, seting it ro idle, bus frequency, serila ATA power saving etc etc, all of that is not good for controling a machine.
Some can be used with a bit of tweaking, some are unusable.
If you can live with older versions of Lcnc all is good ( mostly ).
Also test the preempt-rt kernel version.
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12 Jan 2017 19:39 #85665
by AThayer
Replied by AThayer on topic latency test issues
I plan to use it to control a Bridgeport series one retrofit. Is there a way to know and fix what is causing the issues? Can I download older versions but not 8-10 years old? If I can download them where would I get them? What is preempt-rt kernel version? Thank you for your time.
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15 Jan 2017 00:50 #85796
by AThayer
Replied by AThayer on topic latency test issues
Anyone have any ideas? Where can I download older versions of linuxcnc?
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15 Jan 2017 01:12 #85797
by tommylight
Replied by tommylight on topic latency test issues
linuxcnc.org/iso/
All the old versions in one place.
All the old versions in one place.
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