Supported Metrics

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

Namespace

SYS.NoSQL

Metrics

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

**Table 1** GeminiDB Cassandra API metrics
Metric ID	Name	Description	Value Range	Unit	Number System	Monitored Object	Monitoring Period (Raw Data)
nosql005_disk_usage	Storage Space Usage	Storage usage of the current instance.	0–100	%	N/A	GeminiDB Cassandra instances	1 minute
nosql006_disk_total_size	Total Storage Space	Total storage space of the current instance.	≥ 0	GB	1024(IEC)	GeminiDB Cassandra instances	1 minute
nosql007_disk_used_size	Storage Space Usage	Storage space usage of the current instance.	≥ 0	GB	1024(IEC)	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	≥ 0	ms	N/A	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	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra001_cpu_usage	CPU Usage	CPU usage of an instance	0–100	%	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra002_mem_usage	Memory Usage	Memory usage of the instance	0–100	%	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra003_bytes_out	Network Output Throughput	Outgoing traffic in bytes per second	≥ 0 Bytes/s	Bytes/s	1024(IEC)	GeminiDB Cassandra instance nodes	1 minute
cassandra004_bytes_in	Network Input Throughput	Incoming traffic in bytes per second	≥ 0	Bytes/s	1024(IEC)	GeminiDB Cassandra instance nodes	1 minute
cassandra014_connections	Active Node Connections	Total number of connections attempting to connect to Cassandra instance nodes	≥ 0	Counts	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra015_read_latency	Average Read Latency	Average amount of time consumed by read requests	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra016_write_latency	Average Write Latency	Average amount of time consumed by write requests	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra037_pending_write	Suspended Write Tasks	Number of write tasks waiting in the queue	≥ 0	Counts	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra038_pending_read	Suspended Read Tasks	Number of read tasks waiting in the queue.	≥ 0	Counts	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra044_range_slice_latency	Scan Duration	Average time consumed by scan operations	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra049_dropped_mutation	Dropped Writes	Average number of dropped writes	≥ 0	Counts	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra052_dropped_read	Dropped Reads	Average number of dropped reads	≥ 0	Counts	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra092_load_info	Data Volume on a Node	Data volume on a node	≥ 0	Byte	1024(IEC)	GeminiDB Cassandra instance nodes	1 minute
cassandra093_write_count_latency	Accumulated Write Requests	Number of write requests initiated by a node	≥ 0	Counts	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra094_write_1min_rate	Average Write Rate in the Last Minute	Average write rate in the last minute	≥ 0	Counts/s	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra095_write_p75_latency	p75 Write Latency	p75 write latency	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra096_write_p95_latency	p95 Write Latency	p95 write latency	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra097_write_p99_latency	p99 Write Latency	p99 write latency	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra098_read_count_latency	Accumulated Read Requests	Number of read requests initiated by a node	≥ 0	Counts	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra099_read_1min_rate	Average Read Rate in the Last Minute	Average read rate in the last minute	≥ 0	Counts/s	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra100_read_p75_latency	p75 Read Latency	p75 read latency	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra101_read_p95_latency	p95 Read Latency	p95 read latency	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra102_read_p99_latency	p99 Read Latency	p99 read latency	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra103_range_slice_count_latency	Accumulated Range Read Requests	Number of range read requests	≥ 0	Counts	N/A	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	≥ 0	Counts/s	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra105_range_slice_p75_latency	p75 Range Read Latency	p75 range read latency	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra106_range_slice_p95_latency	p95 Range Read Latency	p95 range read latency	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra107_range_slice_p99_latency	p99 Range Read Latency	p99 range read latency	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra163_write_p999_latency	p999 Write Latency	p999 write latency	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra164_read_p999_latency	p999 Read Latency	p999 read latency	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra165_large_partition_num	Big Keys	Number of big keys on the current node	≥ 0	Counts	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra166_write_max_latency	Maximum Write Latency	Maximum write latency	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra167_read_max_latency	Maximum Read Latency	Maximum read latency	≥ 0	ms	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra168_imbalance_table_num	Tables with Uneven Data Distribution	Number of tables whose data is not evenly distributed	≥ 0	Counts	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra169_modify_request_size_mean	Average Write Request Size	Average write request size	≥ 0	Bytes	1024(IEC)	GeminiDB Cassandra instance nodes	1 minute
cassandra170_query_response_size_mean	Average Query Response Size	Average size of query requests	≥ 0 Bytes	Bytes	1024(IEC)	GeminiDB Cassandra instance nodes	1 minute
cassandra173_limit_diff_count_mean	Mean of limit Value and Returned Rows	Mean of limit difference	≥ 0	-	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra174_tombstone_query_rate	Tombstone Query Requests per Second	Rate of tombstone query requests	≥ 0	Counts/s	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra175_single_delete_rate	Row Delete Requests per Second	Rate at which a single row is deleted	≥ 0	Counts/s	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra176_range_delete_rate	Range Delete Requests per Second	Range deletion rate	≥ 0	Counts/s	N/A	GeminiDB Cassandra instance nodes	1 minute
cassandra177_large_row_count	Large Rows per Second	Number of large rows	≥ 0	Counts/s	N/A	GeminiDB Cassandra instance nodes	1 minute