Script for automated testing of computer latency.
17 Nov 2020 03:54 #189574
by JohnnyCNC
Replied by JohnnyCNC on topic Script for automated testing of computer latency.
This has me stumped. This is an ODROID H2+ that I got good results running the test manually but when I run this test script the latency is more than double.
LinuxCNC pc tests, version 20200930, started 16.11.2020 20:33:33
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General info:
HARDKERNEL, ODROID-H2
Bios version 5.13, dated 08/11/2020
Chipset: Harddisk is non-rotational, ie. SSD
The amount of swap currently used is 0
================================================================================
CPU related data:
model name : Intel(R) Celeron(R) J4115 CPU @ 1.80GHz
cpu cores : 4
stepping : 1
cache size : 4096 KB
================================================================================
RAM related data:
Maximum Capacity: 32 GB
Maximum Voltage: 1.5 V
Maximum Voltage: 1.5 V
Size: 4096 MB
Size: 4096 MB
================================================================================
GPU related data:
product: Intel Corporation
configuration: driver=i915 latency=0
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Parallel port related data:
number of parallel ports is 0
================================================================================
Os and desktop related data:
PRETTY_NAME="Linux Mint 19.3"
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 : lightdm
Windowmanager : Xfwm4
Displaymanager : lightdm
================================================================================
Kernel related data:
Kernel 4.19.106-rt46-lcnc
GRUB_CMDLINE_LINUX_DEFAULT="quiet iscolcpus=2,3 splash"
Cpu idle driver: intel_idle
================================================================================
Kernel modules data:
Check if pcspkr is loaded: No, which is good!
Check if snd modules are loaded: No, which is good!
================================================================================
Keyboard & Mouse related data:
Number of mice: 1
Mouse 0 : Logitech M215 2nd Gen
Mice attached to USB:
Keyboards attached to USB:
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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 69206019
================================================================================
Command for latency test is:
su john -c "latency-histogram --nobase --sbinsize 1000 --nox 2>&1 | tee -a 1605576810.lat &"
Latency testing loop started Mon Nov 16 20:33:50 EST 2020,
should end after Mon Nov 16 22:33:50 EST 2020
================================================================================
Swap useage: prerun: 0, running: 0
================================================================================
CPU core temperatures:
Core 0: Tmin: 35.0°C, Tmax: 43.0°C, (high = +105.0°C, crit = +105.0°C)
Core 1: Tmin: 35.0°C, Tmax: 43.0°C, (high = +105.0°C, crit = +105.0°C)
Core 2: Tmin: 35.0°C, Tmax: 43.0°C, (high = +105.0°C, crit = +105.0°C)
Core 3: Tmin: 35.0°C, Tmax: 43.0°C, (high = +105.0°C, crit = +105.0°C)
================================================================================
last latency data is as follows:.
7203 secs servo min:-134.700 uS max: 128.900 uS sdev: 3.800 uS
7204 secs servo min:-134.700 uS max: 128.900 uS sdev: 3.800 uS
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18 Nov 2020 21:56 #189736
by JohnnyCNC
Replied by JohnnyCNC on topic Script for automated testing of computer latency.
I had started a single manual test using 5 glxgears and one youtube window running endless videos. I did not resize the gears but did move the you tube around on the screen a few times while checking on the machine. I will try another with Vimeo and try to expand the gear windows occasionally. The results of the tests I had said I was going to start are here.
I will run them again with Vimeo and be more abusive with the screen. Its just hard to keep that up over a 2 hour run unless it is automated. I will also rerun the scripted test.
Thanks
John
I will run them again with Vimeo and be more abusive with the screen. Its just hard to keep that up over a 2 hour run unless it is automated. I will also rerun the scripted test.
Thanks
John
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