RTAI Testsuite LiveCD

Hardware

CPU

name	value
CPU name:	(R) Pentium(R) 4 CPU 3.20GHz
CPU vendor:	GenuineIntel
CPU family:	15
CPU model:	4
CPU stepping:	8
CPU cache:	2048 KB
CPU frequency:	3206.623

PCI devices

The following table shows all PCI devices that were plugged in the testmachine during the testrun.

category	name
PCI bridge	Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 01)
Host bridge	Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 01)
Ethernet controller	Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE] (rev 10)
IDE interface	Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01)
SCSI storage controller	BusLogic BT-946C (BA80C30) [MultiMaster 10] (rev 01)
VGA compatible controller	VMWare Inc [VMWare SVGA II] PCI Display Adapter
Bridge	Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 08)
ISA bridge	Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 08)

Testresults

RTAI testsuite

UP scheduler - latency

The difference in time between the expected switch time and the time when a task is actually called by the scheduler is measured. For this test the RTAI UP scheduler is used.

LXRT scheduler - latency

The difference in time between the expected switch time and the time when a task is actually called by the scheduler is measured. For this test the RTAI LXRT scheduler is used.

UP scheduler - preemption

The following table shows the results of a stress test aimed at verifying that the schedulers preempt well under intense load. It is a simple test that combines the latency calibration task with a fast and slow task in such a way to have two levels of preemption, nesting on an odd number of tasks. It shows the maximum jitter of the fast task, which has the second highest priority, and of the slow which has the lowest priority. Reasonable jitters are a clear indication of preemption.