LinuxCNC pc tests, version 20200930, started 10.03.2022 08:49:32 ******************************************************************************** General info: Dell Inc., OptiPlex 980 Bios version A18, dated 02/27/2018 Chipset: Intel Corporation 5 Series/3400 Series Harddisk is non-rotational, ie. SSD The amount of swap currently used is 0 ================================================================================ CPU related data: model name : Intel(R) Core(TM) i5 CPU 650 @ 3.20GHz cpu cores : 2 stepping : 5 cache size : 4096 KB ================================================================================ RAM related data: Maximum Capacity: 16 GB Size: 2048 MB Size: 2048 MB Size: 2048 MB Size: 2048 MB ================================================================================ GPU related data: product: Core Processor Integrated Graphics Controller configuration: driver=i915 latency=0 ================================================================================ Parallel port related data: number of parallel ports is 1 parport0: PC-style at 0x378 (0x778), irq 7 [PCSPP,TRISTATE,EPP] ================================================================================ 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 : kdeconnectd Windowmanager : KWin Displaymanager : lightdm ================================================================================ Kernel related data: Kernel 4.19.0-19-rt-amd64 GRUB_CMDLINE_LINUX_DEFAULT="quiet isolcpus=1 mitigations=off intel_idle.max_cstate=0 processor.max_cstate=0 idle=poll acpi_irq_nobalance noirqbalance" Cpu idle driver: none ================================================================================ 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: 2 Mouse 0 : CATEX TECH. 84EC-S Mouse Mouse 1 : Logitech M570 Mice attached to USB: Keyboards attached to USB: ================================================================================ LinuxCNC related data: LinuxCNC version is: 2.8.2.11.g6a3d0a434 ================================================================================ Preparing for latency test: Started glxgears No. 1, 2, 3, 4, 5 .......... Started firefox with 'https://vimeo.com/150574260', WID 71303422 ================================================================================ Command for latency test is: su optiplex980 -c "latency-histogram --bbinsize 1000 --base 50000 --sbinsize 1000 --nox 2>&1 | tee -a 1646869745.lat &" Latency testing loop started 2022年 3月 10日 木曜日 08:49:45 JST, should end after 2022年 3月 10日 木曜日 10:49:45 JST ================================================================================ Swap useage: prerun: 0, running: 0 ================================================================================ CPU core temperatures: Core 0: Tmin: 50.0°C, Tmax: 62.0°C, (high = +89.0°C, crit = +105.0°C) Core 2: Tmin: 51.0°C, Tmax: 60.0°C, (high = +89.0°C, crit = +105.0°C) ================================================================================ last latency data is as follows:. 7202 secs base min: -19.200 uS max: 17.300 uS sdev: 0.300 uS 7202 secs servo min: -15.400 uS max: 14.800 uS sdev: 0.600 uS