blob: f7484763909291fc627fd72b3815e9151d5b32ff (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
.. This work is licensed under a Creative Commons Attribution 4.0 International
.. License.
.. http://creativecommons.org/licenses/by/4.0
.. (c) Cisco Systems, Inc
NDR/PDR Binary Search
=====================
Algorithm Outline
-----------------
The ServiceChain class is responsible for calculating the NDR/PDR for all frame sizes requested in the configuration.
Calculation for 1 frame size is delegated to the TrafficClient class.
Call chain for calculating the NDR-PDR for a list of frame sizes:
- ServiceChain.run()
- ServiceChain._get_chain_results()
- for every frame size:
- ServiceChain.__get_result_per_frame_size()
- TrafficClient.get_ndr_pdr()
- TrafficClient.__range_search() recursive binary search
The search range is delimited by a left and right rate (expressed as a % of line rate per direction).
The recursion narrows down the range by half and stops when:
- the range is smaller than the configured load_epsilon value
- or when the search hits 100% or 0% of line rate
|
