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- Updating data leaves has linear time complexity.
- Raw performance is about 3000 fragments per second.
- This is very fast compared to updating whole data nodes. I recommend that NCMP use this API for updating CM-handle state.
Deleting data nodes
In this scenario, 300 Open ROADM device nodes are already defined. A number of these data nodes will be deleted using CpsDataService::deleteDataNodes. The types of nodes will be varied, for example, deleting container nodes, list elements, or whole lists.
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This should narrow the performance gap in this case.
Cps Path Queries
TODO
NCMP Performance
CM-handle registration
TODO Comparison of Kohn, London, Montreal (current) up to 40,000 CM handles
CM-handle deregistration
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| Release | Date | CmHandles | 100 | 500 | 1000 | 2000 | 5000 | 10000 | 20000 | 40000 |
|---|---|---|---|---|---|---|---|---|---|---|
| Kohn | Oct 2022 | Time (seconds) | 8 | 16 | 17 | 33 | 58 | 152 | ERROR | not tested |
| London | May 2023 | Time (seconds) | 6 | 7 | 12 | 22 | 62 | 122 | 613 | 1955 |
| current | Aug 2023 | Time (seconds) | 6 | 7 | 10 | 16 | 31 | 57 | 71 | 108 |
CM-handle registration is multi-threaded, so performance may appear to scale better than linear, until the CPU cores are maxed out.
As can be seen below, CPU usage never reached 100% during the tests, indicating performance is still bottle-necked.
CM-handle deregistration
| Release | Date | CmHandles | 100 | 500 | 1000 | 2000 | 5000 | 10000 | 20000 | 40000 |
|---|---|---|---|---|---|---|---|---|---|---|
| Kohn | Oct 2022 | Time (seconds) | 7 | 116 | 395 | 1465 | 9523 | not tested | not tested | not tested |
| London | May 2023 | Time (seconds) | 0.6 | 1.7 | 3.2 | 5.0 | 16.8 | 37.2 | 85.3 | ERROR |
| current | Aug 2023 | Time (seconds) | 0.6 | 1.4 | 2.8 | 3.9 | 14.2 | 23.0 | 65.2 | 142.3 |
Current release has exactly linear performance for CM-handle de-registration (on a single thread):
| Removed | Time (sec) | CM-handles/sec |
|---|---|---|
| 500 | 1.53 | 327 |
| 1000 | 2.65 | 377 |
| 5000 | 13.26 | 377 |
| 10000 | 25.93 | 385 |
| 20000 | 56.15 | 356 |