While Teslas might be interesting to discuss (off topic), I'll add some results to bring this thread back to topic
Below you'll find the results of a Lenovo t500: not useable! This despite disabling everything suspicious to impair latency in bios.
@beaglebrainz: your kernels install and run just fine on debian buster, as you may note below.
Code:
LinuxCNC pc tests, version 20200922, started 25.09.2020 14:33:55
********************************************************************************
General info:
LENOVO, 2241BM7
Bios version 6FET92WW (3.22 ), dated 12/14/2011
Chipset: Intel Corporation Mobile 4 Series
Harddisk is non-rotational, ie. SSD
The amount of swap currently used is 0
================================================================================
CPU related data:
model name : Intel(R) Core(TM)2 Duo CPU P8600 @ 2.40GHz
cpu cores : 2
stepping : 10
cache size : 3072 KB
================================================================================
RAM related data:
Maximum Memory Module Size: 4096 MB
Maximum Total Memory Size: 8192 MB
Maximum Capacity: 8 GB
Maximum Memory Module Size: 4096 MB
Maximum Total Memory Size: 8192 MB
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)
Size: 2048 MB
Size: 2048 MB
================================================================================
GPU related data:
product: Mobile 4 Series Chipset Integrated Graphics Controller
product: Mobile 4 Series Chipset Integrated Graphics Controller
configuration: driver=i915 latency=0
configuration: latency=0
================================================================================
Parallel port related data:
number of parallel ports is 0
================================================================================
Os related data:
PRETTY_NAME="Debian GNU/Linux 10 (buster)"
Windowmanager = Xfwm4
================================================================================
Kernel related data:
Kernel 4.19.106-rt46-lcnc
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash isolcpus=3"
Cpu idle driver: acpi_idle
Kernel modules data:
Check if pcspkr is loaded: ================================================================================
No, which is good!
Check if snd modules are loaded: Yes, may cause bigger latency.
can probably be disabled in bios
================================================================================
Keyboard & Mouse related data:
Number of mice: 3
Mouse 0 : Logitech USB Receiver
Mouse 1 : SynPS/2 Synaptics TouchPad
Mouse 2 : TPPS/2 IBM TrackPoint
Mice attached to USB:
Logitech, Inc. Cordless Mouse Receiver
Keyboards attached to USB:
================================================================================
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 25166086
================================================================================
Command for latency test is:
su ck -c "latency-histogram --nobase --sbinsize 1000 --nox 2>&1 | tee -a 1601037234.lat &"
Latency testing loop started Fr Sep 25 14:34:11 CEST 2020,
should end after Fr Sep 25 16:34:11 CEST 2020
================================================================================
Swap useage: prerun: 0, running: 0
================================================================================
CPU core temperatures:
Core 0: Tmin: 61.0°C, Tmax: 69.0°C, (high = +105.0°C, crit = +105.0°C)
Core 1: Tmin: 59.0°C, Tmax: 69.0°C, (high = +105.0°C, crit = +105.0°C)
================================================================================
last latency data is as follows:.
7202 secs servo min:-431.100 uS max: 428.800 uS sdev: 3.200 uS
7202 secs servo min:-431.100 uS max: 428.800 uS sdev: 3.200 uS
