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

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15 Apr 2022 21:27 #240345 by tommylight

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15 Apr 2022 23:47 #240358 by seuchato
shellcrash
I do not have access to an opteron based PC. Can you kindly share what exactly you have done to "The script was modified since old AMD AM2 motherboards report CPU temperature, not Core temperature".

Besides: nice results!
greez
chris

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20 Jul 2022 11:22 #247833 by JT
Linuxmint 21 Cinnamon
linux-image-5.18.0-2-rt-amd64 kernel
ASUS Tuff Gaming B550 Pro motherboard
AMD Ryzen 5 5600X 6 Core Processor
Corsair Vengeance LPX 32GB (2 X 16GB) DDR4 3600 (PC4-28800) C18 1.35V Desktop Memory
SAMSUNG 980 SSD 1TB PCle 3.0x4, NVMe M.2 2280, Internal Solid State Drive
MSI Gaming AMD Radeon RX 6600 128-bit 8GB GDDR6 DP/HDMI Dual Torx Fans FreeSync DirectX 12 VR Ready Graphics Card (RX 6600 MECH 2X 8G)
Cooler Master MasterWatt 750 Watt Semi-fanless Modular Power Supply, 80 Plus Bronze Certified

While this is not for controlling a machine it is for programming and testing Mesa cards and I'm super happy with the results.


JT
 
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20 Jul 2022 12:50 #247840 by tommylight
Can you add --show at the end of the latency histogram line, there are some off screen excursions there.

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21 Jul 2022 11:47 - 21 Jul 2022 11:48 #247934 by JT
john@cave-mint-21:~$ latency-histogram --nobase --show
Note: Using POSIX realtime


JT
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Last edit: 21 Jul 2022 11:48 by JT.
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21 Jul 2022 11:49 #247935 by JT
I've not even looked at the bios to turn off any power saving stuff...

JT

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23 Jul 2022 17:49 #248131 by macsddau@linuxcnc
Today, I have made some changes in grub option for my AS-Rock LCNC controller.
GRUB_CMDLINE_LINUX_DEFAULT="quiet isolcpus=1 nohalt irqaffinity=0"
Now, latency seems to be very stable and low. See histogram below.
 

Currently I'm running a lcnc-hw test. I will post results very soon.
 
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23 Jul 2022 18:52 - 23 Jul 2022 18:54 #248133 by macsddau@linuxcnc
Last edit: 23 Jul 2022 18:54 by macsddau@linuxcnc. Reason: No latency results !!!

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23 Jul 2022 19:13 #248135 by macsddau@linuxcnc

No latency results computed ?!

Got these errors

[code].HAL: ERROR: function 'base' may only be added to one thread
addf failed
while executing
"hal addf $::LH($thd,name) t_$thd"
(procedure "start_collection" line 41)
invoked from within
"start_collection"
invoked from within
"if ![info exists ::LH(start)] {
set_defaults
config
progress "Loading packages"
load_packages
signal trap SIGINT finish
progress "Making g..."
(file "/usr/bin/latency-histogram" line 840)
....[Child 13866, MediaDecoderStateMachine #1] WARNING: 7fdfaff8f4a0 OpenCubeb() failed to init cubeb: file /build/firefox-esr-ZJkPYk/firefox-esr-78.11.0esr/dom/media/AudioStream.cpp, line 331
[Child 13866, MediaDecoderStateMachine #1] WARNING: Decoder=7fdf9daeb000 [OnMediaSinkAudioError]: file /build/firefox-esr-ZJkPYk/firefox-esr-78.11.0esr/dom/media/MediaDecoderStateMachine.cpp, line 3891
There are no windows in the stack
Invalid window '%1'
Usage: windowactivate [options] [window=%1]
--sync - only exit once the window is active (is visible + active)
If no window is given, %1 is used. See WINDOW STACK in xdotool(1)
[\code]
 

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23 Jul 2022 19:35 #248138 by macsddau@linuxcnc

No latency results computed ?!
Got these errors
.HAL: ERROR: function 'base' may only be added to one thread
addf failed
while executing
"hal addf $::LH($thd,name) t_$thd"
(procedure "start_collection" line 41)
invoked from within
"start_collection"
invoked from within
"if ![info exists ::LH(start)] {
set_defaults
config
progress "Loading packages"
load_packages
signal trap SIGINT finish
progress "Making g..."
(file "/usr/bin/latency-histogram" line 840)
....[Child 13866, MediaDecoderStateMachine #1] WARNING: 7fdfaff8f4a0 OpenCubeb() failed to init cubeb: file /build/firefox-esr-ZJkPYk/firefox-esr-78.11.0esr/dom/media/AudioStream.cpp, line 331
[Child 13866, MediaDecoderStateMachine #1] WARNING: Decoder=7fdf9daeb000 [OnMediaSinkAudioError]: file /build/firefox-esr-ZJkPYk/firefox-esr-78.11.0esr/dom/media/MediaDecoderStateMachine.cpp, line 3891
There are no windows in the stack
Invalid window '%1'
Usage: windowactivate [options] [window=%1]
--sync - only exit once the window is active (is visible + active)
If no window is given, %1 is used. See WINDOW STACK in xdotool(1)
[\code]
 
 

Reboot solve the problem
The following user(s) said Thank You: seuchato

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