KPI Support for Multiple Replicas

Feature Summary and Revision History

Summary Data

Table 1. Summary Data

Applicable Product(s) or Functional Area

AMF

Applicable Platform(s)

SMI

Feature Default Setting

Enabled - Always-on

Related Documentation

Not Applicable

Revision History

Table 2. Revision History

Revision Details

Release

First introduced.

2021.04.0

Feature Description

This feature supports the following statistics:

  • Procedural

  • Service-based Interface (SBI)

  • Session

    • gNB ID

    • Tracking Area (TA)

OAM Support

This section describes operations, administration, and maintenance information for this feature.

Procedural Statistics

The following procedural statistics are supported.

Metrics

Description

Labels
procedure_execution_seconds_total Total time in seconds for executing the procedure.

  • execution_stage

  • msg_type

  • proc_name

  • sub_proc_name
procedure_service_total Total number of procedures executed in service.

proc_name
procedure_service_duration_seconds_total Total time in seconds for executing the procedure in service pod.

proc_name
procedure_service_duration_histogram_total Histogram time bins for executing the procedure in service pod.

  • proc_name

  • bin
sub_procedure_service_total Total number of sub procedures executed in service.

  • msg_type

  • proc_name

  • sub_proc_name
sub_procedure_service_duration_seconds_total Total time in seconds for executing the sub procedure in service pod.

  • msg_type

  • proc_name

  • sub_proc_name
sub_procedure_service_duration_histogram_total Histogram time bins for executing the sub procedure in service pod.

  • msg_type

  • proc_name

  • sub_proc_name

  • bin

SBI Statistics

The following SBI statistics are supported.

Metrics

Description

Labels
rpc_response_total Total number of Remote Process Call (RPC) responses received.

  • background

  • dest_host

  • dest_set

  • interface

  • method_name

  • msg_type

  • namespace

  • proc_name

  • retry

  • rpc_name

  • service_name

  • stage

  • status

  • status_code

  • sub_proc_name

  • txn_type

Session Statistics

The following session statistics are supported.

Metrics

Description

Labels

db_records_total

Total number of records present in database.

  • CipheringAlgo

  • IntegrityAlgo

  • session_type

Bulk Statistics

The following are examples of KPI Support for Multiple Replicas.

Procedural Statistics Example

procedure_execution_seconds_total{app_name="amf",cluster="clu1",data_center="dc1",execution_stage="AppInfra",
instance_id="0",msg_type="N1RegistrationRequest",proc_name="UE Registration",service_name="amf-service",
sub_proc_name="N1RegistrationRequest"} 0.004000576

procedure_service_duration_histogram_total{app_name="amf",bin="50to500ms",cluster="clu1",data_center="dc1",instance_id="0",
proc_name="UE Registration",service_name="amf-service"} 1
procedure_service_duration_seconds_total{app_name="amf",cluster="clu1",data_center="dc1",instance_id="0",
proc_name="UE Registration",service_name="amf-service"} 0.201723819
procedure_service_total{app_name="amf",cluster="clu1",data_center="dc1",instance_id="0",
proc_name="UE Registration",service_name="amf-service"} 1
sub_procedure_service_duration_histogram_total{app_name="amf",bin="50to500ms",cluster="clu1",data_center="dc1",instance_id="0",
msg_type="N1RegistrationRequest",proc_name="UE Registration",service_name="amf-service",sub_proc_name="N1RegistrationRequest"} 1
sub_procedure_service_duration_seconds_total{app_name="amf",cluster="clu1",data_center="dc1",instance_id="0",
msg_type="N1RegistrationRequest",proc_name="UE Registration",service_name="amf-service",sub_proc_name="N1RegistrationRequest"} 0.201668683
sub_procedure_service_total{app_name="amf",cluster="clu1",data_center="dc1",instance_id="0",msg_type="N1RegistrationRequest",
proc_name="UE Registration",service_name="amf-service",sub_proc_name="N1RegistrationRequest"} 1

Procedure Service Duration Histogram Statistics Example

procedure_service_duration_histogram_total{app_name="AMF",bin="<=50ms",cluster="clu1",data_center="dc1",instance_id="2",
proc_name="Pdu N1N2",service_name="amf-service"} 2

Sub-procedure Service Duration Histogram Statistics Example

sub_procedure_service_duration_histogram_total{app_name="AMF",bin="<=50ms",cluster="clu1",
data_center="dc1",instance_id="0",msg_type="N1N2MessageTransfer",proc_name="Pdu N1N2",service_name="amf-service",
sub_proc_name="N1N2MessageTransfer"} 1
sub_procedure_service_total{app_name="AMF",cluster="clu1",data_center="dc1",instance_id="0",
msg_type="N1N2MessageTransfer",proc_name="Pdu N1N2",service_name="amf-service",sub_proc_name="N1N2MessageTransfer"}1

Procedure Service Statistics Example

procedure_service_total{app_name="AMF",cluster="clu1",data_center="dc1",instance_id="2",proc_name="UE Registration",
service_name="amf-service"} 4

SBI Statistics Example

rpc_response_total{app_name="amf",background="false",cluster="clu1",data_center="dc1",
dest_host="http://1.0.0.1:1000/nausf-auth/v1",dest_set="",instance_id="1",interface="Rest",
method_name="Authenticate",msg_type="AusfauthRequest",namespace="0",proc_name="Authentication",
retry="0",rpc_name="AUSF",service_name="amf-rest-ep",stage="init_done",status="success",status_code="201",
sub_proc_name="N1RegistrationRequest",txn_type="NausfUeAuthentication"} 1

rpc_response_total{app_name="amf",background="false",cluster="clu1",data_center="dc1",
dest_host="http://1.0.0.1:1001/nudm-uecm/v1",dest_set="",instance_id="1",interface="Rest",
method_name="Register",msg_type="UdmRegRequest",namespace="0",proc_name="UDM Registration",
retry="0",rpc_name="UDM",service_name="amf-rest-ep",stage="init_done",status="error",
status_code="RestClientUnableToSend",sub_proc_name="N1RegistrationRequest",
txn_type="NudmUecmRegistration"} 1

DB Records Statistics Example

db_records_total{appInstanceId="0",app_name="datastore-ep",cluster="session",data_center="test",db="session",
instance_id="3232278441",service_name="datastore-ep",session_type="EmergencyRegistered:false",
sliceName="slice1",systemId=""} 1
db_records_total{appInstanceId="0",app_name="datastore-ep",cluster="session",data_center="test",db="session",
instance_id="3232278441",service_name="datastore-ep",session_type="PLMNType:HOMER",
sliceName="slice1",systemId=""} 2
db_records_total{appInstanceId="0",app_name="datastore-ep",cluster="session",data_center="test",db="session",
instance_id="3232278441",service_name="datastore-ep",session_type="UeUsageSetting:NA",
sliceName="slice1",systemId=""} 0
db_records_total{appInstanceId="0",app_name="datastore-ep",cluster="session",data_center="test",db="session",
instance_id="3232278441",service_name="datastore-ep",session_type="gnb_id:4194304123456",
sliceName="slice1",systemId=""} 0
db_records_total{appInstanceId="0",app_name="datastore-ep",cluster="session",data_center="test",db="session",
instance_id="3232278441",service_name="datastore-ep",session_type="tac:30",
sliceName="slice1",systemId=""} 0
db_records_total{appInstanceId="0",app_name="datastore-ep",cluster="session",data_center="test",db="session",
instance_id="3232278441",service_name="datastore-ep",session_type="total",
sliceName="slice1",systemId="1"} 3