Dates and Events: |
OSADL Articles:
2023-11-12 12:00
Open Source License Obligations Checklists even better nowImport the checklists to other tools, create context diffs and merged lists
2022-07-11 12:00
Call for participation in phase #4 of Open Source OPC UA open62541 support projectLetter of Intent fulfills wish list from recent survey
2022-01-13 12:00
Phase #3 of OSADL project on OPC UA PubSub over TSN successfully completedAnother important milestone on the way to interoperable Open Source real-time Ethernet has been reached
2021-02-09 12:00
Open Source OPC UA PubSub over TSN project phase #3 launchedLetter of Intent with call for participation is now available |
OSADL QA Farm on Real-time of Mainline Linux
About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards
Real-time Ethernet (Ethercat) worst-case round-trip time monitoring
Wakeup latency of all systems - Real-time optimization - Peer-to-peer UDP duplex link - OPC UA PubSub over TSN - Powerlink - Ethercat - Network load - kvm - Sleep states
One of the Linux real-time test systems (rack #5, slot #1) runs a commercial proprietary user-space Ethercat master that is connected to a Beckhoff EK1100 Ethercat coupler and EL2004/EL1012 input/output terminals. The plot below is generated from 5-minute maxima of the time elapsed between sending an Ethercat frame and receiving the response packet. The test is running at a cycle interval of 500 µs. Thus, the maximum at the rightmost column of the below 30-h plot is based on a total of 216,000,000 individual timed cycles. In addition, the maxima per week, per month and per year are stored as well to further add to the confidence of the result. Access to these data, however, requires additional user rights such as granted to OSADL members.