Updated on 2023-11-21 GMT+08:00

GeminiDB Cassandra Metrics

This section describes GeminiDB Cassandra metrics reported to Cloud Eye as well as their namespaces and dimensions. You can use APIs provided by Cloud Eye to query the metrics of the monitored object and alarms generated.

Namespace

SYS.NoSQL

Metrics

You can view metrics on instance nodes by referring to Viewing Metrics.

Table 1 GeminiDB Cassandra metrics

Metric ID

Name

Description

Value Range

Monitored Object

Monitoring Period (Raw Data)

nosql005_disk_usage

Storage Space Usage

Storage space usage of the monitored object.

Unit: Percent

0–100

GeminiDB Cassandra instances

1 minute

nosql006_disk_total_size

Total Storage Space

Total storage space of the monitored object.

Unit: GB

≥ 0

GeminiDB Cassandra instances

1 minute

nosql007_disk_used_size

Used Storage Space

Used storage space of the monitored object.

Unit: GB

≥ 0

GeminiDB Cassandra instances

1 minute

nosql009_dfv_write_delay

Storage Write Latency

Average delay of writing data to the storage layer in a specified period

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

nosql010_dfv_read_delay

Storage Read Latency

Average latency of reading data from the storage layer in a specified period

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra001_cpu_usage

CPU Usage

CPU usage of an instance

Unit: Percent

0–100

GeminiDB Cassandra instance nodes

1 minute

cassandra002_mem_usage

Memory Usage

Memory usage of the instance

Unit: Percent

0–100

GeminiDB Cassandra instance nodes

1 minute

cassandra003_bytes_out

Network Output Throughput

Outgoing traffic in bytes per second

Unit: byte/s

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra004_bytes_in

Network Input Throughput

Incoming traffic in bytes per second

Unit: byte/s

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra014_connections

Active Node Connections

Total number of connections attempting to connect to Cassandra instance nodes

Unit: count

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra015_read_latency

Average Read Latency

Average amount of time consumed by read requests

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra016_write_latency

Average Write Latency

Average amount of time consumed by write requests

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra037_pending_write

Suspended Write Tasks

Number of write tasks in waiting status

Unit: count

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra038_pending_read

Suspended Read Tasks

Number of read tasks in waiting status

Unit: count

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra044_range_slice_latency

Scan Duration

Average amount of time consumed by scan operations

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra049_dropped_mutation

Dropped Writes

Average number of dropped writes

Unit: count

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra052_dropped_read

Dropped Reads

Average number of dropped reads

Unit: count

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra092_load_info

Data Volume on a Node

Data volume on a node

Unit: byte

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra093_write_count_latency

Accumulated Write Requests

Total number of write requests initiated by a node

Unit: count

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra094_write_1min_rate

Average Write Rate in the Last Minute

Average write rate in the last minute

Unit: count/s

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra095_write_p75_latency

p75 Write Latency

p75 write latency

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra096_write_p95_latency

p95 Write Latency

p95 write latency

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra097_write_p99_latency

p99 Write Latency

p99 write latency

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra098_read_count_latency

Accumulated Read Requests

Total number of read requests initiated by a node

Unit: count

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra099_read_1min_rate

Average Read Rate in the Last Minute

Average read rate in the last minute

Unit: count/s

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra100_read_p75_latency

p75 Read Latency

p75 read latency

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra101_read_p95_latency

p95 Read Latency

p95 read latency

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra102_read_p99_latency

p99 Read Latency

p99 read latency

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra103_range_slice_count_latency

Accumulated Range Read Requests

Accumulated range read requests

Unit: count

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra104_range_slice_1min_rate

Average Range Read Rate in the Last Minute

Average range read rate in the last minute

Unit: count/s

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra105_range_slice_p75_latency

p75 Range Read Latency

p75 range read latency

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra106_range_slice_p95_latency

p95 Range Read Latency

p95 range read latency

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra107_range_slice_p99_latency

p99 Range Read Latency

p99 range read latency

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra163_write_p999_latency

p999 Write Latency

p999 write latency

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra164_read_p999_latency

p999 Read Latency

p999 read latency

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra165_large_partition_num

Big Keys

Number of big keys on the current node

Unit: count

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra166_write_max_latency

Maximum Write Latency

Maximum write latency

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra167_read_max_latency

Maximum Read Latency

Maximum read latency

Unit: ms

≥ 0

GeminiDB Cassandra instance nodes

1 minute

cassandra168_imbalance_table_num

Tables with Uneven Data Distribution

Number of tables in which data is not evenly distributed.

Unit: count

≥ 0

GeminiDB Cassandra instance nodes

1 minute

Dimensions

Key

Value

cassandra_cluster_id

Cluster ID of the GeminiDB Cassandra instance

cassandra_node_id

Node ID of the GeminiDB Cassandra instance