Name: Tango Polling Loop SIG Meeting
Start: 2026-04-14T09:00:00+02:00
End: 2026-04-16T17:00:00+02:00
Location: MAX IV

Tango Polling Loop SIG Meeting

from Tuesday, April 14, 2026 (9:00 AM) to Thursday, April 16, 2026 (5:00 PM)

Monday, April 13, 2026
Tuesday, April 14, 2026
9:00 AM Welcome - Anton Joubert (MAX IV Laboratory) Benjamin Bertrand (MAX IV Laboratory)
Welcome
- Anton Joubert (MAX IV Laboratory)
- Benjamin Bertrand (MAX IV Laboratory)
9:00 AM - 9:15 AM
9:15 AM Where are we - Reynald Bourtembourg (ESRF)
Where are we
- Reynald Bourtembourg (ESRF)
9:15 AM - 10:30 AM
Current polling loop algorithms
10:30 AM Fika
Fika
10:30 AM - 10:50 AM
10:50 AM Deficiencies - Thomas Ives (Observatory Sciences Ltd)
Deficiencies
- Thomas Ives (Observatory Sciences Ltd)
10:50 AM - 12:00 PM
Institutes get a few minutes to list their issues - SKAO -- [https://gitlab.com/tango-controls/cppTango/-/work_items/1554](https://gitlab.com/tango-controls/cppTango/-/work_items/1554) (part of description) -- [https://gitlab.com/tango-controls/cppTango/-/work_items/1551#note_2992430576](https://gitlab.com/tango-controls/cppTango/-/work_items/1551#note_2992430576) - MAX IV -- [https://gitlab.com/tango-controls/cppTango/-/work_items/1541](https://gitlab.com/tango-controls/cppTango/-/work_items/1541) -- [https://gitlab.com/tango-controls/cppTango/-/work_items/1600](https://gitlab.com/tango-controls/cppTango/-/work_items/1600) -- [https://gitlab.com/tango-controls/cppTango/-/work_items/1552](https://gitlab.com/tango-controls/cppTango/-/work_items/1552) - Elettra -- New architecture proposal: [https://gitlab.elettra.eu/lorenzo.pivetta/polling-sig/-/blob/main/proposal-class-level-async-poller.md](https://gitlab.elettra.eu/lorenzo.pivetta/polling-sig/-/blob/main/proposal-class-level-async-poller.md)
12:00 PM Lunch
Lunch
12:00 PM - 1:00 PM
1:00 PM Example implementations - Thomas Ives (Observatory Sciences Ltd)
Example implementations
- Thomas Ives (Observatory Sciences Ltd)
1:00 PM - 1:20 PM
Room: VIXAM
1:20 PM Literature review: scheduling algorithms - Thomas Braun (byte physics e.K.)
Literature review: scheduling algorithms
- Thomas Braun (byte physics e.K.)
1:20 PM - 1:40 PM
Room: VIXAM
1:40 PM Discuss algorithm options - Anton Joubert (MAX IV Laboratory)
Discuss algorithm options
- Anton Joubert (MAX IV Laboratory)
1:40 PM - 2:40 PM
Room: VIXAM Round-table discussion
2:40 PM Fika
Fika
2:40 PM - 3:00 PM

3:00 PM Discuss design options
Discuss design options
3:00 PM - 4:00 PM
Room: VIXAM Configurability, backwards compatibility, pluggability, etc. -> converge on solution and roadmap

4:00 PM Day 1 recap
Day 1 recap
4:00 PM - 4:30 PM
Room: VIXAM
Wednesday, April 15, 2026

9:00 AM Day 1 follow-ups & agenda review
Day 1 follow-ups & agenda review
9:00 AM - 9:15 AM
Room: MAX III

9:15 AM Design of the new data collector/producer-consumer mechanism
Design of the new data collector/producer-consumer mechanism
9:15 AM - 10:30 AM
Room: MAX III

10:30 AM Fika
Fika
10:30 AM - 10:45 AM

10:45 AM Design of the new data collector/producer-consumer mechanism (cont.)
Design of the new data collector/producer-consumer mechanism (cont.)
10:45 AM - 12:30 PM
Room: MAX III

12:30 PM Lunch
Lunch
12:30 PM - 1:30 PM

1:30 PM Scheduler algorithms and polling loop improvements
Scheduler algorithms and polling loop improvements
1:30 PM - 3:00 PM
Room: MAX III

3:00 PM Fika
Fika
3:00 PM - 3:15 PM

3:15 PM Scheduler algorithms and polling loop improvements (cont.)
Scheduler algorithms and polling loop improvements (cont.)
3:15 PM - 4:15 PM
Room: MAX III

4:15 PM Day 2 recap
Day 2 recap
4:15 PM - 5:00 PM
Room: MAX III
Thursday, April 16, 2026

9:00 AM Day 2 follow-ups & agenda review
Day 2 follow-ups & agenda review
9:00 AM - 9:15 AM
Room: VIXAM

9:15 AM Scheduler algorithms and polling loop improvements (cont.)
Scheduler algorithms and polling loop improvements (cont.)
9:15 AM - 10:00 AM
Room: VIXAM

10:00 AM Fika
Fika
10:00 AM - 10:15 AM

10:15 AM Mocking time, incl. polling loop, for testability
Mocking time, incl. polling loop, for testability
10:15 AM - 11:15 AM
Room: MAX III How can we make the code more testable without having to wait in "real time" for time-based events to happen?

11:15 AM Review cppTango polling work items
Review cppTango polling work items
11:15 AM - 12:30 PM
Room: MAX III Review the list we set up before the meeting [https://gitlab.com/tango-controls/cppTango/-/work_items/1551](https://gitlab.com/tango-controls/cppTango/-/work_items/1551)

12:30 PM Lunch
Lunch
12:30 PM - 1:30 PM

1:30 PM New / additional items
New / additional items
1:30 PM - 3:15 PM
Room: MAX III

3:15 PM Fika
Fika
3:15 PM - 3:30 PM

3:30 PM Review all action items
Review all action items
3:30 PM - 4:30 PM
Room: MAX III

4:30 PM Closing remarks & next steps
Closing remarks & next steps
4:30 PM - 5:00 PM
Room: MAX III