3 Benchmark Testing

This section describes the environment used for benchmarking Oracle Communications Cloud Native Core, Network Slice Selection Function (NSSF).

The default values or recommendations for any required software or resource are available from the third-party vendors. Benchmarking should be performed with the settings described in this section. Operators may choose different values.

The benchmark testing is performance testing with the fine-tuning done to improve the performance of NSSF. It is performed in the CNE environment.

3.1 Test Scenario-1: NSSF Performance with 10.5K TPS

3.1.1 Overview

To qualify the test run, you can consider the following elements:

  • CPU and Memory utilization
  • Ingress and Egress traffic rate
  • Success rate
  • Message request and response processing time
  • Infrastructure resource requirements and utilization

Note:

The performance and capacity of the NSSF system may vary based on the call model, Feature or Interface configuration, and underlying CNE and hardware environment.

3.1.2 NSSF Features

Table 3-1 NSSF Features

NSSF Features Status for benchmarking
Enhanced Computation of AllowedNSSAI in NSSF ENABLED
Auto-Population of Configuration Based on NsAvailability Update ENABLED
Handover from EPS to 5G ENABLED
Subscription Modification Feature ENABLED
Optimized NSSAI Availability Data Encoding and TAI Range ENABLED
Support Indirect Communication ENABLED
Multiple PLMN Support ENABLED
Integration with ASM ENABLED
Supports Compression Using Accept-Encoding or Content-Encoding gzip ENABLED
OAuth Access Token Based Authorization with K-id ENABLED
Overload control ENABLED

Note:

Apart from these features being enabled, rest of the configurations have been made default.

3.1.3 Software Test Constraints

Table 3-2 Software Test Constraints

Test Constraint Details
NSSF Version 25.1.200
cnDBTier 25.1.2xx
Sidecar ENABLED/DISABLED Enabled
TLS ENABLED/DISABLED Disabled

3.1.4 NSSF Call-Mix

NsSelection

Table 3-3 NsSelection

Get Request Type Traffic % TPS
Initial Registration 10% 88
UE Config update 5% 44
PDU establishment 80% 700
EPS to 5G HO 5% 44

NsAvailability

NsAvailability traffic is purely transactional, and records only 2 TPS.

3.1.5 Test Observations

The NSSF performance test provides insights into the system's ability to handle various network activities. The test simulates a mix of traffic, focusing on establishing new user connections (10%), data transmission through PDU sessions (80%), and network management tasks such as UE configuration updates (5%) and handovers (5%).

This distribution reflects the typical workload on the NSSF in a real-world network. Additionally, the NsAvailability test assesses the system's responsiveness to updates originating from network functions. This traffic is capped at a lower rate (2 transactions per second).

3.1.5.1 General Observations

The following table provides observation data for the performance test that can be used for benchmark testing to increase the traffic rate.

Table 3-4 General Observations

Parameter Values
Test Duration 12 hours
TPS Achieved 10.5K
3.1.5.2 Resource Utilization

NSSF Services Sidecar

The following table provides observed values of NSSF ASM sidecar:

Table 3-5 NSSF Services

NAME Container Name Pod Count Total CPU Total Memory (Mi)
ocnssf-alternate-route alternate-route 1 4m 533
ocnssf-appinfo appinfo 1 25m 260
ocnssf-egress-gateway egress-gateway 2 7m 1497
ocnssf-ingress-gateway ingress-gateway 5 14057m 13291
ocnssf-nsauditor nsauditor 1 2m 423
ocnssf-nsavailability nsavailability 2 37m 1485
ocnssf-nsconfig nsconfig 1 9m 612
ocnssf-nsselection nsselection 9 12428m 14318
ocnssf-nssubscription nssubscription 1 2m 446
ocnssf-ocnssf-nrf-client-nfdiscovery nrf-client-nfdiscovery 2 6m 973
ocnssf-ocnssf-nrf-client-nfmanagement nrf-client-nfmanagement 2 8m 1031
ocnssf-ocpm-config config-server 1 4m 401
ocnssf-performance perf-info 1 25m 137

NSSF Services Sidecar

The following table provides observed values of NSSF ASM sidecar:

Table 3-6 NSSF Services Sidecar

NAME Container Name Pod Count Total CPU Total Memory (Mi)
ocnssf-alternate-route istio-proxy 1 8m 175
ocnssf-appinfo istio-proxy 1 8m 173
ocnssf-egress-gateway istio-proxy 2 12m 350
ocnssf-ingress-gateway istio-proxy 5 6172m 1010
ocnssf-nsauditor istio-proxy 1 6m 170
ocnssf-nsavailability istio-proxy 2 28m 358
ocnssf-nsconfig istio-proxy 1 12m 199
ocnssf-nsselection istio-proxy 9 5205m 1483
ocnssf-nssubscription istio-proxy 1 6m 177
ocnssf-ocnssf-nrf-client-nfdiscovery istio-proxy 2 13m 353
ocnssf-ocnssf-nrf-client-nfmanagement istio-proxy 2 15m 356
ocnssf-ocpm-config istio-proxy 1 6m 175
ocnssf-performance istio-proxy 1 11m 175

cnDBTier Services

The following table provides observed values of cnDBTier services and sidecar:

Table 3-7 cnDBTier Services

NAME Container Name Pod Count Total CPU Total Memory (Mi)
mysql-cluster-db-backup-manager-svc db-backup-manager-svc 1 12m 88
mysql-cluster-db-monitor-svc db-monitor-svc 1 92m 823
mysql-cluster-site1-site2-replication-svc db-infra-monitor-svc 1 1m 49
mysql-cluster-site1-site2-replication-svc site1-site2-replication-svc 1 7m 280
mysql-cluster-site1-site3-replication-svc site1-site3-replication-svc 1 7m 285
ndbappmysqld db-infra-monitor-svc 4 4m 215
ndbappmysqld mysqlndbcluster 4 12634m 4631
ndbmgmd db-infra-monitor-svc 2 2m 108
ndbmgmd mysqlndbcluster 2 14m 57
ndbmtd db-backup-executor-svc 4 4m 226
ndbmtd db-infra-monitor-svc 4 6m 219
ndbmtd mysqlndbcluster 4 7788m 63081
ndbmysqld db-infra-monitor-svc 4 6m 241

cnDBTier Sidecar

NAME Container Name Pod Count Total CPU Total Memory (Mi)
mysql-cluster-db-backup-manager-svc istio-proxy 1 5m 125
mysql-cluster-db-monitor istio-proxy 1 5m 136
mysql-cluster-site1-site2-replication istio-proxy 1 3m 145
mysql-cluster-site1-site3-replication istio-proxy 1 4m 153
ndbappmysqld init-sidecar 4 8m 4
ndbappmysqld istio-proxy 4 3770m 740
ndbmgmd istio-proxy 2 13m 301
ndbmtd istio-proxy 4 6199m 615
ndbmysqld init-sidecar 4 8m 4
ndbmysqld istio-proxy 4 43m 636
3.1.5.3 Latency Observations

The following table provides observed values in latency:

Table 3-8 Latency Parameters

Latency Parameter Details (Avg)
NSSelection success percentage 100
Ingress Gateway latency of NSSelection 24.5ms
NSAvailability Success percentage 100
Ingress Gateway latency of NSAvailability latency 43.5ms
Ingress success rate 100
Result Pass

Table 3-9 NsSelection Ingress Gateway Latency

Percentile Min (ms) Max (ms) Avg (ms) Current (ms)
50% 6.11 ms 6.32 ms 6.11 ms 6.11 ms
90% 11.1 ms 11.9 ms 11.4 ms 11.5 ms
95% 12.3 ms 14.0 ms 13.0 ms 13.2 ms
99% 18.7 ms 49.8 ms 28.9 ms 30.7 ms

Table 3-10 NsAvailability Ingress Gateway Latency

Percentile Min (ms) Max (ms) Avg (ms) Current (ms)
50% 24.4 ms 28.5 ms 25.5 ms 25.5 ms
90% 27.2 ms 88.6 ms 32.8 ms 38.4 ms
95% 28.4 ms 102 ms 39.6 ms 43.1 ms
99% 30.3 ms 123 ms 49.0 ms 48.8 ms