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Follow principles/patterns of RESTCONF RFC-8040 https://datatracker.ietf.org/doc/html/rfc8040
Follow principles/patterns of yang-patch RFC-8072 https://datatracker.ietf.org/doc/html/rfc8040
Follow principles/patterns of RESTCONF NMDA RFC-8527 https://datatracker.ietf.org/doc/html/rfc8527

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Issues & Decisions

Note

Please note this section was added long after the implementation and focusses on characteristic only.

Characteristics

Reported characteristics for NCMP version 3.4.1

It is proposed that reported characters will be used as a baseline for agreed limits.


IssuesNotesDecisions
1KPI for De-registration
OperationConcurrent requestsDMI DelayObserved RateExpectationSign-OffRegistration
of 100 CM-handles
1 (requests are sequential)

100 ms to get module references
1000 ms to get module resources

1.6 ops/secondTBDTDBCM-handle search

5

N/A5 ops/minuteTBDTDBCM-handle ID search

5

N/A7.1 ops/minuteTBDTDB
This was mentioned. Was this ever agreed, is this a valid use case that needs to be covered together with the Registration ?

Not priority for now, but acceptable if we match the registration req.
#2 for de-reg  
kieran mccarthy Kolawole Adebisi-Adeolokun 

2DMI delayCould we get some feedback on DMI-delays for other use cases as not mentioned in FS document

Awaiting for ETH feedback AP On Kolawole Adebisi-Adeolokun and Csaba Kocsis


Provided

3

Number of instances


In some cases, ETH have used 2 instances, can we verify the number of instances for each use case.

Some of the req were defined per instance and resources used : Identify which of these ? 

Agreed to;

CPS use 1 instance currently, but should focus on aligning performance with 2 instances for all use case 

4Input Load Distribution the CM-handle search and ID search

Currently has 5 parallel request between them distributed at 2.5 each. This fractional distribution isn't feasible for parallel processing; the load should be allocated as whole numbers. Load needs to be distributed at. Would it be acceptable to adjust this distribution to either 2 or 3 parallel requests each (and vice versa ) without any negative repercussions?


Agreed to do 6 parallel request combined total and divide the load to 3 parallel request each

5Regarding CM-handle search and ID search

FS only identified Module performance, are there any testing done towards a combined search of properties and modules in a single query


Confirmed no other testing was previously done on this.....  

CPS have the capabilities to do mixed testing. ETH tbc on if they want to consider this ( Csaba Kocsis )


Requirements

Note

Please note this section was added long after the implementation and focuses on characteristic and enhancements after this study only.

Excerpt Include
DW:CPS-2249: NCMP To support Conflict Handling (Policy Execution) using External Service
DW:CPS-2249: NCMP To support Conflict Handling (Policy Execution) using External Service

Characteristics

It is proposed that reported characteristics will be used as a baseline for NCMP when agreed and sign-off.


OperationConcurrent requests/parallelDMI DelayResponse sizePerformance Requirement
(Blue Stone tablet KPI)
NotesSign-Off
1Registration of 20,000 CM-handles
(in batches of 100)
1 (requests are sequential)

100 ms to get module references
1,000 ms to get module resources

N/A

  • 11 CM-Handles/second as per Stone Tablet E2E Wich include module conversion warm-up
  • NCMP Budget: 22 Cm Handles/second 
  1. Batch Size: 100 (per request)
    Not using Module Set Tags
  2. Time measured start of first rest-call until all cm handle states READY
  3. 1,000 unique module references.
  4. Five different types of Nodes. So 5 requests for Module Resources. Avg 200 modules each.
2De-registration of 100 CM-handles1 (requests are sequential)

No Module delays

N/A

  • 11 NEs/second
  • NCMP should target 22 NEs/Second 

De-registration is currently not mentioned in Stone Tablet KPI or FS, however we have agreed to match the performance of registration for now as de-reg is also not a priority at this point in time




3CM-handle ID search with Module filter

3
Run in parallel with #4

N/A20,000 CM Handles i.e.
100*20.000 = 2MB

As provided byCsaba Kocsis 0.625 seconds/Operation

FS stated 5 parallel request for both ID search and search.  CPS to run with 3 parallel each for both ID search and Search meaning a combine total of 6 parallel request 
4CM-handle search with Module filter3
Run in parallel with #3
N/A20,000 CM Handles i.e.
500*20.000 = 10MB

As provided by Csaba Kocsis 13 seconds/Operation

FS stated 5 parallel request for both ID search and search.  CPS to test with 3 parallel each for both ID search and Search meaning a combine total of 6 parallel request 
5Synchronous single CM-handle pass-through read

10
Run in parallel with #6

5 KB

25 (parallel) request/sec

Read are done in parallel with Write

6Synchronous single CM-handle pass-through
read

20

Daniel Hanrahan will obtain figures

50 ops/secondTBDTDBSynchronous single CM-handle pass-through write

20

Daniel Hanrahan will obtain figures

13 ops/secondTBDTDB

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write (CUD)

10
Run in parallel with #5

670 msCsaba Kocsis 

5 KB

13 (parallel) request/sec

No response is expected
7Batch/Bulk Read

1 read request with  200 cmHandle per second



150 cmhandles/sec



Notes

  1. This is for mixed TCs
  2. Single KPIs will be monitored in NCMP owned pipeline with our performance every day(2 hrs interval) - Performance

Synchronous single cm-handle pass-through (read) requests

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