Latency Issue 7i96e

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10 Jul 2020 00:59 #174165 by Project_Hopeless
I wasn't sure which sub forum to place this so I though I'd start here.

So I had no issues jogging and Homing the machine during the setup all month. Now about 5 minutes into a test run (air cutting) my spoil board I get a "Unexpected realtime delay" error.

So I ran the latency test with 12 GLX gears, copied files and ran system monitor. attached are the results.

Now this is a hobby machine with relatively slow drives So I don't need extreme performance. Should I try a longer servo period? How long would be two long? Any other tips what to look at? Where would I adjust the servo/thread period?

Any other recommendations?

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10 Jul 2020 02:29 - 10 Jul 2020 02:29 #174176 by PCW
Replied by PCW on topic Latency Issue 7i96e
You can try 2 ms, unless you have very high acceleration you
should not notice any difference

Also if you have a Intel MAC on the host PC you need to disable
IRQ coalescing as described in the hm2_eth manual page.
Last edit: 10 Jul 2020 02:29 by PCW.

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10 Jul 2020 15:20 #174219 by Project_Hopeless

You can try 2 ms, unless you have very high acceleration you
should not notice any difference

Also if you have a Intel MAC on the host PC you need to disable
IRQ coalescing as described in the hm2_eth manual page.

Thanks.

I changed the coin battery in the PC so I probably need to check the BIOS that virtualization is off correct? Any other settings to disable in BIOS?

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10 Jul 2020 17:13 #174238 by PCW
Replied by PCW on topic Latency Issue 7i96e
I would disable any speed switching or power saving modes
(EIST, Turbo mode, C1 states above C1 etc)

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10 Jul 2020 18:34 #174243 by tommylight
Replied by tommylight on topic Latency Issue 7i96e
Also hyperthreading, speed step....
Moving this topic to "Computers and OS's" as this is computer issue.

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