Current Motherboards

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4 years 3 months ago #247832 by JT
Replied by JT on topic Current Motherboards
After running latency-histogram --nobase all night I think I have a winner.

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Thanks for your help Tommy.
JT

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4 years 3 months ago #247841 by tommylight
Replied by tommylight on topic Current Motherboards
forum.linuxcnc.org/18-computer/39371-res...cnc?start=310#247840

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4 years 3 months ago #247863 by tommylight
Replied by tommylight on topic Current Motherboards
I was not sure when i told you to get the 6600 graphic card as i do not follow much of it, i am glad i was right! :)
This is against a 3050, a much, much better than the 1650 you were looking at, and still the 6600 wins by a large margin.

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4 years 3 months ago #247879 by JT
Replied by JT on topic Current Motherboards
The AMD Radeon RX 6600 is a beast to say the least and I'm happy so far with it... maybe I need to start playing games in the morning with my coffee instead of programming...

JT

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4 years 3 months ago #247993 by Bari
Replied by Bari on topic Current Motherboards
 

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Just for comparison. No BIOS tweaks on Sid.

ASUS TUF B450M-PLUS Gaming MB

We have a newer RT kernel and with the BIOS settings and isolcpus the same hardware is at 33uS worst case on the base thread. Will post a pic later.

 

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Same ASUS TUF B450M-PLUS Gaming MB with same kernel as above but with isolcpus=1,2,3

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4 years 3 months ago #247996 by Bari
Replied by Bari on topic Current Motherboards
 

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Another comparison with 5.18 rt kernel but older AMD CPU and MB.

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4 years 3 months ago #248024 by JT
Replied by JT on topic Current Motherboards
I think I'll try Debian unstable in the morning. I have a PCIe NIC installed so that's not an issue like it was before.

Did you install Debian 11 then change the apt sources to point to unstable?

JT

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4 years 3 months ago #248039 by Bari
Replied by Bari on topic Current Motherboards
Yes, I have installed from Deb11 and then changed the sources to unstable.

The big difference in the latency numbers for the Ryzen system above is with and without the use of isolcpus. Using isolcpus reduced jitter by 3-4x.

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4 years 3 months ago #248104 by JT
Replied by JT on topic Current Motherboards
I installed Debian 11.4 and it doesn't recognize the video card so stuck at 800x600.

Upgrading to unstable to see what I get.

JT

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4 years 3 months ago #248108 by tommylight
Replied by tommylight on topic Current Motherboards
You can install the AMD drivers for it, it is easy as they provide them in full and the process is streamlined a lot.

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