Updated on 2023-04-03 GMT+08:00

Performance Metrics and Dimensions

Performance metrics described in this section are product features provided by AOM, not service levels of AOM. Related metrics can be viewed only after APM Agents are connected. For details about how to connect APM Agents, see APM Getting Started.

Table 1 Performance metrics

Metric

Description

Value Range

Unit

Success rate (apm_sla_success_rate)

Success rate of API calls in a statistical period

0%–100%

%

Average latency (apm_sla_tp99)

TP99 latency indicates the minimum time required to process 99% requests.

Example: Assume that there are 100 requests, and the time consumed by the requests is 1s, 2s, 3s, 4s...98s, 99s, and 100s. To process 99% of the requests, at least 99s is required. Therefore, TP99 latency is 99s.

Calculation: Sort all requests by the consumed time in ascending order. TP99 latency = Time consumed by the Nth request. N is the rounded value of 99% x Total number of requests.

≥ 0

ms

Error calls (apm_sla_error_count)

Number of error calls in a statistical period

≥ 0

Count

Throughput (apm_sla_throughput)

Total API calls in a specified period

≥ 0

Count/s

Apdex (apm_sla_apdex)

User satisfaction with application performance. A larger value indicates a higher satisfaction level.

0–1

N/A

Table 2 Dimensions of performance metrics

Dimension

Description

appId

Application ID

appName

Service name

clusterId

Cluster ID

monitoringGroup

Application name

nameSpace

Cluster namespace

transactionType

Transaction type

tier

Application layer name