Results of latency test, list of computers tested for use with LinuxCNC

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6 years 1 week ago #186392 by tommylight
That is a really good result, but to short to be definitive.

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6 years 1 week ago #186419 by M1g13
Code:
LinuxCNC pc tests, version 20200930, started 18.10.2020 00:29:08 ******************************************************************************** General info: Gigabyte Technology Co., Ltd., B460MD3H Bios version F2, dated 04/13/2020 Chipset: Harddisk is non-rotational, ie. SSD The amount of swap currently used is 0 ================================================================================ CPU related data: model name : Intel(R) Pentium(R) Gold G6400 CPU @ 4.00GHz cpu cores : 1 stepping : 3 cache size : 4096 KB ================================================================================ RAM related data: Maximum Capacity: 64 GB Maximum Voltage: 1.2 V Maximum Voltage: Unknown Maximum Voltage: 1.2 V Maximum Voltage: Unknown Size: 4096 MB Non-Volatile Size: None Volatile Size: 4 GB Cache Size: None Logical Size: None Size: No Module Installed Non-Volatile Size: None Volatile Size: None Cache Size: None Logical Size: None Size: 4096 MB Non-Volatile Size: None Volatile Size: 4 GB Cache Size: None Logical Size: None Size: No Module Installed Non-Volatile Size: None Volatile Size: None Cache Size: None Logical Size: None ================================================================================ GPU related data: product: Advanced Micro Devices, Inc. [AMD/ATI] configuration: driver=amdgpu latency=0 ================================================================================ Parallel port related data: number of parallel ports is 0 ================================================================================ Os and desktop related data: PRETTY_NAME="Debian GNU/Linux 10 (buster)" Should the info below not match with your machine, kindly post the output of pstree here, including a brief desciption of your desktop environment, window manager and display manager. Tia https://forum.linuxcnc.org/18-computer/39370-script-for-automated-testing-of-computer-latency Desktop environment : xfce4 Windowmanager : Xfwm4 Displaymanager : lightdm ================================================================================ Kernel related data: Kernel 4.19.0-11-rt-amd64 GRUB_CMDLINE_LINUX_DEFAULT="quiet" Cpu idle driver: none ================================================================================ Kernel modules data: Check if pcspkr is loaded: No, which is good! Check if snd modules are loaded: Yes, may cause bigger latency. can probably be disabled in bios, alternatively, you can run "./block-snd-modules" which has just now been created for your convenience. ================================================================================ Keyboard & Mouse related data: Number of mice: 2 Mouse 0 : ELMCU iPazzPort Mouse Mouse 1 : Weida Hi-Tech CoolTouchR System Mice attached to USB: Keyboards attached to USB: ================================================================================ LinuxCNC related data: LinuxCNC version is: 2.8.0 ================================================================================ Preparing for latency test: Started glxgears No. 1, 2, 3, 4, 5 .......... Started firefox with 'https://vimeo.com/150574260', WID 46137347 ================================================================================ Command for latency test is: su bub32 -c "latency-histogram --nobase --sbinsize 1000 --nox 2>&1 | tee -a 1602970139.lat &" Latency testing loop started Вс окт 18 00:29:20 MSK 2020, should end after Вс окт 18 02:29:20 MSK 2020 ================================================================================ Swap useage: prerun: 0, running: 0 ================================================================================ CPU core temperatures: Core 0: Tmin: 35.0°C, Tmax: 40.0°C, (high = +80.0°C, crit = +100.0°C) ================================================================================ last latency data is as follows:. 7202 secs servo min: -10.600 uS max: 12.500 uS sdev: 1.300 uS 7202 secs servo min: -10.600 uS max: 12.500 uS sdev: 1.300 uS

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6 years 1 week ago #186427 by tommylight
That is a very good result, even for software stepping.

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6 years 1 week ago #186437 by seuchato

M1g13 wrote:

Code:
LinuxCNC pc tests, version 20200930, started 18.10.2020 00:29:08 ******************************************************************************** General info: Gigabyte Technology Co., Ltd., B460MD3H Bios version F2, dated 04/13/2020 Chipset: Harddisk is non-rotational, ie. SSD The amount of swap currently used is 0 .... ================================================================================ CPU core temperatures: Core 0: Tmin: 35.0°C, Tmax: 40.0°C, (high = +80.0°C, crit = +100.0°C) ================================================================================ last latency data is as follows:. 7202 secs servo min: -10.600 uS max: 12.500 uS sdev: 1.300 uS 7202 secs servo min: -10.600 uS max: 12.500 uS sdev: 1.300 uS


I second tommylight, very good results indeed. There is one thing that I saw lately: randomly, the browser stopped playing videos. Thus load on the pc was low. Thus: Was your browser constantly playing videos? If not sure, repeat the test and check from time to time.

Greez
chris

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  • BeagleBrainz
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6 years 1 week ago #186441 by BeagleBrainz
Sounds like a good M\B CPU combo to recommend for a new system. Even for software stepping.

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6 years 1 week ago #186448 by M1g13
The video worked, I was there. I tried to move windows in different ways

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6 years 1 week ago #186449 by tommylight
It is a quite old single core Pentium processor.

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6 years 1 week ago #186451 by BeagleBrainz

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6 years 1 week ago #186454 by M1g13

tommylight wrote: It is a quite old single core Pentium processor.



the processor was released this year, it is dual-core (I disabled one)

BeagleBrainz wrote: I thought it was this
ark.intel.com/content/www/us/en/ark/prod...-cache-4-00-ghz.html

M\B is a socket 1200


this is it

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6 years 1 week ago #186455 by tommylight
Single core at 4 GHz should have raised an alarm, but i guess my alarms are off today ! :)

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