DDS Metrics
This section describes metrics reported by Document Database Service (DDS) 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 for DDS.
Namespace
SYS.DDS
Monitoring Metrics
Metric ID |
Metrics Name |
Description |
Value Range |
Monitored Object |
Monitoring Interval (Raw Data) |
---|---|---|---|---|---|
mongo007_connections_usage |
Percentage of Active Node Connections |
Percentage of the number of connections that attempt to connect to the instance node to the total number of available connections |
0~100% |
|
1 minute 5 seconds |
mongo032_mem_usage |
Memory Usage |
Memory usage of the monitored object |
0~100% |
|
1 minute 5 seconds |
mongo031_cpu_usage |
CPU Usage |
CPU usage of the monitored object |
0~100% |
|
1 minute 5 seconds |
mongo035_disk_usage |
Storage Space Usage |
Storage space usage of the monitored object |
0~100% |
|
1 minute |
Metric ID |
Metrics Name |
Description |
Value Range |
Monitored Object |
Monitoring Interval (Raw Data) |
---|---|---|---|---|---|
mongo001_command_ps |
COMMAND Statements per Second |
Number of COMMAND statements executed per second |
≥ 0 Count/s |
|
1 minute 5 seconds |
mongo002_delete_ps |
DELETE Statements per Second |
Number of DELETE statements executed per second |
≥ 0 Count/s |
|
1 minute 5 seconds |
mongo003_insert_ps |
INSERT Statements per Second |
Number of INSERT statements executed per second |
≥ 0 Count/s |
|
1 minute 5 seconds |
mongo004_query_ps |
QUERY Statements per Second |
Number of QUERY statements executed per second |
≥ 0 Count/s |
|
1 minute 5 seconds |
mongo005_update_ps |
UPDATE Statements per Second |
Number of UPDATE statements executed per second |
≥ 0 Count/s |
|
1 minute 5 seconds |
mongo006_getmore_ps |
GETMORE Statements per Second |
Number of GETMORE statements executed per second |
≥ 0 Count/s |
|
1 minute 5 seconds |
mongo007_chunk_num1 |
Chunks of Shard 1 |
Number of chunks in shard 1 |
0–64 Counts |
DDS cluster instance |
1 minute |
mongo007_chunk_num2 |
Chunks of Shard 2 |
Number of chunks in shard 2 |
0–64 Counts |
DDS cluster instance |
1 minute |
mongo007_chunk_num3 |
Chunks of Shard 3 |
Number of chunks in shard 3 |
0–64 Counts |
DDS cluster instance |
1 minute |
mongo007_chunk_num4 |
Chunks of Shard 4 |
Number of chunks in shard 4 |
0–64 Counts |
DDS cluster instance |
1 minute |
mongo007_chunk_num5 |
Chunks of Shard 5 |
Number of chunks in shard 5 |
0–64 Counts |
DDS cluster instance |
1 minute |
mongo007_chunk_num6 |
Chunks of Shard 6 |
Number of chunks in shard 6 |
0–64 Counts |
DDS cluster instance |
1 minute |
mongo007_chunk_num7 |
Chunks of Shard 7 |
Number of chunks in shard 7 |
0–64 Counts |
DDS cluster instance |
1 minute |
mongo007_chunk_num8 |
Chunks of Shard 8 |
Number of chunks in shard 8 |
0–64 Counts |
DDS cluster instance |
1 minute |
mongo007_chunk_num9 |
Chunks of Shard 9 |
Number of chunks in shard 9 |
0–64 Counts |
DDS cluster instance |
1 minute |
mongo007_chunk_num10 |
Chunks of Shard 10 |
Number of chunks in shard 10 |
0–64 Counts |
DDS cluster instance |
1 minute |
mongo007_chunk_num11 |
Chunks of Shard 11 |
Number of chunks in shard 11 |
0–64 Counts |
DDS cluster instance |
1 minute |
mongo007_chunk_num12 |
Chunks of Shard 12 |
Number of chunks in shard 12 |
0–64 Counts |
DDS cluster instance |
1 minute |
mongo008_connections |
Active Instance Connections |
Total number of connections attempting to connect to a DDS DB instance |
0–200 Counts |
DDS DB instance |
1 minute |
mongo009_migFail_num |
Chunk Migration Failures in Last 24 hrs |
Number of chunk migration failures in the last 24 hours |
≥ 0 Counts |
DDS cluster instance |
1 minute |
mongo007_connections |
Active Node Connections |
Total number of connections attempting to connect to a DDS DB instance node |
0–200 Counts |
|
1 minute 5 seconds |
mongo007_connections_usage |
Percentage of Active Node Connections |
Percentage of the number of connections that attempt to connect to the instance node to the total number of available connections |
0~100% |
|
1 minute 5 seconds |
mongo008_mem_resident |
Resident Memory |
Size of resident memory in MB |
≥ 0 MB |
|
1 minute |
mongo009_mem_virtual |
Virtual Memory |
Size of virtual memory in MB |
≥ 0 MB |
|
1 minute |
mongo010_regular_asserts_ps |
Regular Asserts per Second |
Number of regular asserts per second |
≥ 0 Count/s |
|
1 minute |
mongo011_warning_asserts_ps |
Warning Asserts per Second |
Number of warning asserts per second |
≥ 0 Count/s |
|
1 minute |
mongo012_msg_asserts_ps |
Message Asserts per Second |
Number of message asserts per second |
≥ 0 Count/s |
|
1 minute |
mongo013_user_asserts_ps |
User Asserts per Second |
Number of user asserts per second |
≥ 0 Count/s |
|
1 minute |
mongo014_queues_total |
Operations Queued Waiting for a Lock |
Number of operations queued waiting for a lock |
≥ 0 Counts |
|
1 minute |
mongo015_queues_readers |
Operations Queued Waiting for a Read Lock |
Number of operations queued waiting for a read lock |
≥ 0 Counts |
|
1 minute |
mongo016_queues_writers |
Operations Queued Waiting for a Write Lock |
Number of operations queued waiting for a write lock |
≥ 0 Counts |
|
1 minute |
mongo017_page_faults |
Page Faults |
Number of page faults on the monitored nodes |
≥ 0 Counts |
|
1 minute |
mongo018_porfling_num |
Slow Queries |
Total number of slow queries from the last 5 minutes to the current time point on the monitored node. |
≥ 0 Counts |
|
1 minute |
mongo019_cursors_open |
Maintained Cursors |
Number of maintained cursors on the monitored nodes |
≥ 0 Counts |
|
1 minute |
mongo020_cursors_timeOut |
Timeout Cursors |
Number of timed out cursors on the monitored nodes |
≥ 0 Counts |
|
1 minute |
mongo021_wt_cahe_usage |
Bytes in WiredTiger Cache |
Size of data in the WiredTiger cache in MB |
≥ 0 MB |
|
1 minute |
mongo022_wt_cahe_dirty |
Tracked Dirty Bytes in WiredTiger Cache |
Size of tracked dirty data in the WiredTiger cache in MB |
≥ 0 MB |
|
1 minute |
mongo023_wInto_wtCache |
Bytes Written Into Cache per Second |
Bytes written into WiredTiger cache per second |
≥ 0 bytes/s |
|
1 minute |
mongo024_wFrom_wtCache |
Bytes Written From Cache per Second |
Bytes written from the WiredTiger cache to the disk per second |
≥ 0 bytes/s |
|
1 minute |
mongo025_repl_oplog_win |
Oplog Window |
Available time in hour in the monitored primary node's oplog |
≥ 0 Hours |
Primary node |
1 minute |
mongo026_oplog_size_ph |
Oplog Growth Rate |
Speed in MB/hour at which oplogs are generated on the monitored primary node |
≥ 0 MB/Hour |
Primary node |
1 minute |
mongo025_repl_headroom |
Replication Headroom |
Time difference in seconds between the primary's oplog window and the replication lag of the secondary |
≥ 0 Seconds |
Secondary node |
1 minute |
mongo026_repl_lag |
Replication Lag |
A delay in seconds between an operation on the primary and the application of that operation from the oplog to the secondary |
≥ 0 Seconds |
Secondary node |
1 minute |
mongo027_repl_command_ps |
Replicated COMMAND Statements per Second |
Number of replicated COMMAND statements executed on the secondary node per second |
≥ 0 Count/s |
Secondary node |
1 minute |
mongo028_repl_update_ps |
Replicated UPDATE Statements per Second |
Number of replicated UPDATE statements executed on the secondary node per second |
≥ 0 Count/s |
Secondary node |
1 minute |
mongo029_repl_delete_ps |
Replicated DELETE Statements per Second |
Number of replicated DELETE statements executed on the secondary node per second |
≥ 0 Count/s |
Secondary node |
1 minute |
mongo030_repl_insert_ps |
Replicated INSERT Statements per Second |
Number of replicated INSERT statements executed on the secondary node per second |
≥ 0 Count/s |
Secondary node |
1 minute |
mongo031_cpu_usage |
CPU Usage |
CPU usage of the monitored object |
0~100% |
|
1 minute 5 seconds |
mongo032_mem_usage |
Memory Usage |
Memory usage of the monitored object |
0~100% |
|
1 minute 5 seconds |
mongo033_bytes_out |
Network Output Throughput |
Outgoing traffic in bytes per second |
≥ 0 bytes/s |
|
1 minute 5 seconds |
mongo034_bytes_in |
Network Input Throughput |
Incoming traffic in bytes per second |
≥ 0 bytes/s |
|
1 minute 5 seconds |
mongo035_disk_usage |
Storage Space Usage |
Storage space usage of the monitored object |
0~100% |
|
1 minute |
mongo036_iops |
IOPS |
Average number of I/O requests processed by the system in a specified period |
≥ 0 Count/s |
|
1 minute |
mongo037_read_throughput |
Disk Read Throughput |
Number of bytes read from the disk per second |
≥ 0 bytes/s |
|
1 minute |
mongo038_write_throughput |
Disk Write Throughput |
Number of bytes written into the disk per second |
≥ 0 bytes/s |
|
1 minute |
mongo039_avg_disk_sec_per_read |
Average Time per Disk Read |
Average time required for each disk read in a specified period |
≥ 0 Seconds |
|
1 minute |
mongo040_avg_disk_sec_per_write |
Average Time per Disk Write |
Average time required for each disk write in a specified period |
≥ 0 Seconds |
|
1 minute |
mongo042_disk_total_size |
Total Storage Space |
Total storage space of the monitored object |
0–1000 GB |
|
1 minute |
mongo043_disk_used_size |
Used Storage Space |
Used storage space of the monitored object |
0–1000 GB |
|
1 minute |
mongo044_swap_usage |
SWAP Usage |
Swap usage, in percentage. |
0~100% |
|
1 minute |
mongo050_top_total_time |
Total Time Spent on Collections |
Mongotop-total time: total time spent on collection operations, in milliseconds. |
≥ 0 Milliseconds |
|
1 minute |
mongo051_top_read_time |
Total Time Spent on Collections |
Mongotop-read time: total time spent reading collections, in milliseconds. |
≥ 0 Milliseconds |
|
1 minute |
mongo052_top_write_time |
Total Time Spent on Collections |
Mongotop-write time: total time spent writing collections, in milliseconds. |
≥ 0 Milliseconds |
|
1 minute |
mongo053_wt_flushes_status |
Number of Times that Checkpoints Are Triggered |
Number of times that the checkpoint is triggered during a polling interval of WiredTiger |
≥ 0 Counts |
|
1 minute |
mongo054_wt_cache_used_percent |
Percentage of the Cache Used by WiredTiger |
Cache size used by WiredTiger, in percentage |
0~100% |
|
1 minute |
mongo055_wt_cache_dirty_percent |
Percentage of Dirty Data in the WiredTiger Cache |
Dirty size in the WiredTiger cache, in percentage |
0~100% |
|
1 minute |
mongo070_rocks_active_memtable |
Memtable Data Size |
Size of data in the active memtable |
0~100 GB |
|
1 minute |
mongo071_rocks_oplogcf_active_memtable |
Memtable Data Size on Oplogcf |
Size of data in the active memtable on oplogcf |
0~100 GB |
|
1 minute |
mongo072_rocks_all_memtable |
Total Data Size of Memtable and Immutable-memtable |
Total data size of memtable and immutable-memtable |
0~100 GB |
|
1 minute |
mongo073_rocks_oplogcf_all_memtable |
Total Data Size of Memtable and Immutable-memtable on Oplogcf |
Total data size of memtable and immutable-memtable on oplogcf |
0~100 GB |
|
1 minute |
mongo074_rocks_snapshots |
Unreleased Snapshots |
Number of unreleased snapshots |
≥ 0 Counts |
|
1 minute |
mongo075_rocks_oplogcf_snapshots |
Unreleased Snapshots on Oplogcf |
Number of unreleased snapshots on oplogcf |
≥ 0 Counts |
|
1 minute |
mongo076_rocks_live_versions |
Active Versions |
Number of active versions |
≥ 0 Counts |
|
1 minute |
mongo077_rocks_oplogcf_live_versions |
Active Versions on Oplogcf |
Number of active versions on oplogcf |
≥ 0 Counts |
|
1 minute |
mongo078_rocks_block_cache |
Data Size in Blockcache |
Size of data in blockcache |
0~100 GB |
|
1 minute |
mongo079_rocks_background_errors |
Accumulated Background Errors |
Accumulated number of background errors |
≥ 0 Counts |
|
1 minute |
mongo080_rocks_oplogcf_background_errors |
Accumulated Background Errors on Oplogcf |
Number of accumulated background errors on oplogcf |
≥ 0 Counts |
|
1 minute |
mongo081_rocks_conflict_bytes_usage |
Buffer Usage for Processing Transaction Write Conflicts |
Usage of the buffer for processing transaction write conflicts |
0~100% |
|
1 minute |
mongo082_rocks_uncommitted_keys |
Uncommitted Keys |
Number of uncommitted keys |
≥ 0 Counts |
|
1 minute |
mongo083_rocks_committed_keys |
Committed Keys |
Number of committed keys |
≥ 0 Counts |
|
1 minute |
mongo084_rocks_alive_txn |
Length of Active Transaction Linked Lists |
Length of active transaction linked lists |
≥ 0 Counts |
|
1 minute |
mongo085_rocks_read_queue |
Length of Read Queues |
Length of read queues |
≥ 0 Counts |
|
1 minute |
mongo086_rocks_commit_queue |
Length of Committed Queues |
Length of committed queues |
≥ 0 Counts |
|
1 minute |
mongo087_rocks_ct_write_out |
Used Concurrent Write Transactions |
Number of used concurrent write transactions |
≥ 0 Counts |
|
1 minute |
mongo088_rocks_ct_write_available |
Available Concurrent Write Transactions |
Number of available concurrent write transactions |
≥ 0 Counts |
|
1 minute |
mongo089_rocks_ct_read_out |
Used Concurrent Read Transactions |
Number of used concurrent read transactions |
≥ 0 Counts |
|
1 minute |
mongo090_rocks_ct_read_available |
Available Concurrent Read Transactions |
Number of available concurrent read transactions |
≥ 0 Counts |
|
1 minute |
mongo091_active_session_count |
Active Sessions |
Number of active sessions cached in the memory of the Mongo instance since the last refresh |
≥ 0 Counts |
|
1 minute |
mongo092_rx_errors |
Error Rate of Received Packets |
Ratio of the number of error packets to the total number of received packets during the monitoring period |
0~100% |
DDS DB instance |
1 minute 5 seconds |
mongo093_rx_dropped |
Loss Rate of Received Packets |
Ratio of the number of lost packets to the total number of received packets during the monitoring period |
0~100% |
DDS DB instance |
1 minute 5 seconds |
mongo094_tx_errors |
Error Rate of Sent Packets |
Ratio of the number of error packets to the total number of sent packets during the monitoring period |
0~100% |
DDS DB instance |
1 minute 5 seconds |
mongo095_tx_dropped |
Loss Rate of Sent Packets |
Ratio of the number of lost packets to the total number of sent packets during the monitoring period |
0~100% |
DDS DB instance |
1 minute 5 seconds |
mongo096_retrans_segs |
Retransmitted Packets |
The number of retransmitted packets during the monitoring period |
≥ 0 Counts |
DDS DB instance |
1 minute 5 seconds |
mongo097_retrans_rate |
Retransmission Ratio |
Ratio of retransmitted packets during the monitoring period |
0~100% |
DDS DB instance |
1 minute 5 seconds |
mongo098_out_rsts_nums |
Sent RST Packets |
The number of sent RST packets during the monitoring period |
≥ 0 Counts |
DDS DB instance |
1 minute 5 seconds |
mongo099_read_time_average |
Average Read Latency |
Average read command execution latency of a single node |
≥ 0 Milliseconds |
|
1 minute |
mongo100_read_time_p99 |
P99 Read Latency |
P99 read command execution latency of a single node |
≥ 0 Milliseconds |
|
1 minute |
mongo101_read_time_p999 |
P999 Read Latency |
P999 read command execution latency of a single node |
≥ 0 Milliseconds |
|
1 minute |
mongo102_write_time_average |
Average Write Latency |
Average write command execution latency of a single node |
≥ 0 Milliseconds |
|
1 minute |
mongo103_write_time_p99 |
P99 Write Latency |
P99 write command execution latency of a single node |
≥ 0 Milliseconds |
|
1 minute |
mongo104_write_time_p999 |
P999 Write Latency |
P999 write command execution latency of a single node |
≥ 0 Milliseconds |
|
1 minute |
mongo105_command_time_average |
Average Command Latency |
Average command execution latency of a single node |
≥ 0 Milliseconds |
|
1 minute |
mongo106_command_time_p99 |
P99 Command Latency |
P99 command execution latency of a single node |
≥ 0 Milliseconds |
|
1 minute |
mongo107_command_time_p999 |
P999 Command Latency |
P999 command execution latency of a single node |
≥ 0 Milliseconds |
|
1 minute |
mongo108_txn_time_average |
Average Transaction Latency |
Average transaction execution latency of a single node |
≥ 0 Milliseconds |
|
1 minute |
mongo109_txn_time_p99 |
P99 Transaction Latency |
P99 transaction execution latency of a single node |
≥ 0 Milliseconds |
|
1 minute |
mongo110_txn_time_p999 |
P999 Transaction Latency |
P999 transaction execution latency of a single node |
≥ 0 Milliseconds |
|
1 minute |
Metrics whose IDs contain rocks are used to monitor instances or instance nodes of version 4.2.
Dimensions
Key |
Value |
---|---|
mongodb_instance_id |
DDS DB instance ID Supports cluster instances of Community Edition, replica set instances, and single node instances. |
mongodb_node_id |
DDS node ID |
mongodb_instance_id is used to specify dimension fields when the Cloud Eye API is invoked. Replica sets and single node instance types do not have instance-level metrics.
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