LinuxCNC pc tests, version 20200930, started 23.03.2022 19:00:12
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General info:
ASUSTeK Computer INC.,  Maximus Extreme
Bios version 1302, dated 03/24/2009
Chipset: Harddisk is rotational
The amount of swap currently used is 0
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CPU related data:
model name	: Intel(R) Core(TM)2 Quad  CPU   Q9550  @ 2.83GHz
cpu cores	: 4
stepping	: 7
cache size	: 6144 KB
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RAM related data:
Maximum Memory Module Size: 2048 MB
Maximum Total Memory Size: 8192 MB
Maximum Capacity: 2 GB
Maximum Memory Module Size: 2048 MB
Maximum Total Memory Size: 8192 MB
Installed Size: 2048 MB (Single-bank Connection)
Enabled Size: 2048 MB (Single-bank Connection)
Installed Size: 2048 MB (Double-bank Connection)
Enabled Size: 2048 MB (Double-bank Connection)
Installed Size: 2048 MB (Double-bank Connection)
Enabled Size: 2048 MB (Double-bank Connection)
Installed Size: 2048 MB (Single-bank Connection)
Enabled Size: 2048 MB (Single-bank Connection)
Size: 2048 MB
Size: 2048 MB
Size: 2048 MB
Size: 2048 MB
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GPU related data:
product: RV710 [Radeon HD 4350/4550]
configuration: driver=radeon latency=0
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Parallel port related data:
number of parallel ports is 0
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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
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Kernel related data:
Kernel 4.19.0-19-rt-amd64
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash  isolcpus=3 idle=poll"
Cpu idle driver: none
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Kernel modules data:
Check if pcspkr is loaded: Yes, may cause bigger latency.
  can be eliminated using:
  sudo echo "install pcspkr /bin/true" >/etc/modprobe.d/pcspkr.conf
Check if snd modules are loaded: No, which is good!
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Keyboard & Mouse related data:
Number of mice: 1
Mouse 0 : Logitech USB Optical Mouse
Mice  attached to USB:
Logitech, Inc. M105 Optical Mouse
Keyboards attached to USB:
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LinuxCNC related data:
LinuxCNC version is: 2.8.2.11.g6a3d0a434
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Preparing for latency test:
Started glxgears No. 1, 2, 3, 4, 5
..........
Started firefox with 'https://vimeo.com/150574260', WID 41943273
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Latency testing loop started mié mar 23 19:00:28 CET 2022, 
Command for latency test is:
su rafa -c  "latency-histogram --nobase --base 25000 --sbinsize 1000 --nox 2>&1 | tee -a 1648058400.lat &"
should end after mié mar 23 21:00:28 CET 2022

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Swap useage: prerun: 0, running: 0

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CPU core temperatures:
Core 0: Tmin: 48.0°C, Tmax: 51.0°C, (high = +74.0°C, crit = +100.0°C)
Core 1: Tmin: 44.0°C, Tmax: 46.0°C, (high = +74.0°C, crit = +100.0°C)
Core 2: Tmin: 48.0°C, Tmax: 51.0°C, (high = +74.0°C, crit = +100.0°C)
Core 3: Tmin: 44.0°C, Tmax: 45.0°C, (high = +74.0°C, crit = +100.0°C)
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last latency data is as follows:.
 7202 secs  servo min:  -6.100 uS max:   6.300 uS sdev:   0.200 uS
 7203 secs  servo min:  -6.100 uS max:   6.300 uS sdev:   0.200 uS