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Metrics

Updated on 2022-08-17 GMT+08:00

Description

This section describes metrics reported by DDM to Cloud Eye as well as their namespaces, metric list, and dimensions. You can use APIs provided by Cloud Eye to query the metric information generated for DDM.

Metrics

Metric Name

Description

Value Range

Monitored Object

Monitoring Interval (Raw Data)

CPU Usage

CPU usage of the DDM instance node

0–100%

DDM nodes

1 minute

Memory Usage

Memory usage of the DDM instance node.

0–100%

DDM nodes

1 minute

Network Input Throughput

Incoming traffic per second of the DDM instance node

≥ 0 byte/s

DDM nodes

1 minute

Network Output Throughput

Outgoing traffic per second of the DDM instance node

≥ 0 byte/s

DDM nodes

1 minute

QPS

Requests per second of the DDM instance node

≥ 0 counts

DDM nodes

1 minute

Read/Write Ratio

Read/Write ratio of the DDM instance node within n each monitoring period

0-100%

DDM nodes

1 minute

Reads

Read operations of the DDM instance node within each monitoring period

≥ 0 counts/s

DDM nodes

1 minute

Writes

Write operations of the DDM instance node within a monitoring period

≥ 0 counts/s

DDM nodes

1 minute

Slow SQL Logs

Number of slow SQL queries added within a monitoring period

≥ 0 counts

DDM nodes

1 minute

Average Response Latency

Average SQL response latency of the DDM instance node

≥ 0 ms

DDM nodes

1 minute

Connections

Connections of the DDM instance node

≥ 0 counts

DDM nodes

1 minute

Tuning Backend Connections

Percentage of active connections (from a DDM node to the target RDS DB instance) in maximum backend connections

0-100%

DDM nodes

1 minute

Dimensions

Key

Value

ddm_node_id

DDM nodes

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