how to get better latency test results
- zjjxxsh
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21 Sep 2026 16:49 #349770
by zjjxxsh
how to get better latency test results was created by zjjxxsh
I'm using Simens IPC127e. It's a Siemens's computer working on Intel E3940/4GB and Intel i210 network card. This computer was used for industry control, it should working well with linuxcnc.
I turned off all the turbo mode, C-state,etc. But the latency test shows the jitter is 50-60us. Is it enough for Ethercat control? Is there anything else I need to do with.
Btw, I have no Idea on turn-off the OnBoard Audio, how should I do.
I turned off all the turbo mode, C-state,etc. But the latency test shows the jitter is 50-60us. Is it enough for Ethercat control? Is there anything else I need to do with.
Btw, I have no Idea on turn-off the OnBoard Audio, how should I do.
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- tommylight
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21 Sep 2026 17:14 #349771
by tommylight
Replied by tommylight on topic how to get better latency test results
Should be OK, but not the only important thing for EtherCAT, so in short: you can not know without actually testing it.
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- rodw
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22 Sep 2026 04:59 #349775
by rodw
Replied by rodw on topic how to get better latency test results
Your PC sounds fine. Just make sure coalescing is turned off on your NIC. type man hm2_eth for some details on this.I turned off all the turbo mode, C-state,etc. But the latency test shows the jitter is 50-60us. Is it enough for Ethercat control? Is there anything else I need to do with.
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