Hardware latency tests, used PC's

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General info:
ASUSTeK Computer INC., System Product Name
Bios version 0605, dated 11/30/2007
Chipset: Harddisk is non-rotational, ie. SSD
The amount of swap currently used is 0
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CPU related data:
model name : Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
cpu cores : 4
stepping : 11
cache size : 4096 KB
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RAM related data:
Maximum Memory Module Size: 2048 MB
Maximum Total Memory Size: 4096 MB
Maximum Capacity: 4 GB
Maximum Memory Module Size: 2048 MB
Maximum Total Memory Size: 4096 MB
Size: 2048 MB
Size: 2048 MB
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GPU related data:
product: 82946GZ/GL Integrated Graphics Controller
configuration: driver=i915 latency=0
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Parallel port related data:
number of parallel ports is 1
parport0: PC-style at 0x378 (0x778), irq 7 [PCSPP,TRISTATE,EPP]
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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
forum.linuxcnc.org/18-computer/39370-scr...-of-computer-latency

Desktop environment :
Windowmanager : Openbox
Displaymanager : lightdm
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Kernel related data:
Kernel 4.19.0-11-rt-amd64
GRUB_CMDLINE_LINUX_DEFAULT="quiet idle=poll acpi_irq_nobalance noirqbalance intel_idle.max_cstate=0 processor.max_cstate=0 isolcpus=2,3"
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-PS/2 Optical Mouse
Mice attached to USB:
Logitech, Inc. G3 (MX518) Optical Mouse
Keyboards attached to USB:
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LinuxCNC related data:
LinuxCNC version is: 2.8.1
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Preparing for latency test:
Started glxgears No. 1, 2, 3, 4, 5
..........
Started firefox with ' vimeo.com/150574260 ', WID 46137347
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Command for latency test is:
su vicious -c "latency-histogram --bbinsize 1000 --base 100000 --sbinsize 1000 --nox 2>&1 | tee -a 1621436824.lat &"

Latency testing loop started ons 19 maj 2021 17:07:27 CEST,
should end after ons 19 maj 2021 19:07:27 CEST

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Swap useage: prerun: 0, running: 0

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CPU core temperatures:
Core 0: Tmin: 67.0°C, Tmax: 71.0°C, (high = +82.0°C, crit = +100.0°C)
Core 1: Tmin: 66.0°C, Tmax: 69.0°C, (high = +82.0°C, crit = +100.0°C)
Core 2: Tmin: 62.0°C, Tmax: 66.0°C, (high = +82.0°C, crit = +100.0°C)
Core 3: Tmin: 62.0°C, Tmax: 65.0°C, (high = +82.0°C, crit = +100.0°C)
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last latency data is as follows:.
7199 secs servo min: -4.200 uS max: 4.300 uS sdev: 0.300 uS
7201 secs base min: -9.900 uS max: 9.800 uS sdev: 0.300 uS