MongoDB monitoring second mongotop

Mongotop can see how much time the MongoDB instance spends reading or writing data, which provides collection-level statistics, while mongostat provides database-level statistics. Mongotop displays data once per second by default

The relevant parameter options are as follows:

-- help displays help information

-- verbose,-v detailed mode, the more detailed multiple v, such as-vvv

-- version displays version information

-- host specifies the hostname

-- port designated port

-- username,-u specifies the user name

-- password,-p specifies the user password

-- authenticationDatabase specifies the library name of the user credential

-- authenticationMechanism designated authentication mechanism

-- locks is displayed on a per library basis, not on a collection basis

Refresh interval

Field description

The result displayed by mongotop is expressed in millisecond ms

Mongotop displays only active namespace or db, and uses-- locks to show only db but not namespace

Ns stands for namespace and consists of a library name and a collection name

Db library name, displayed using-- locks

Total time spent on total read and write operations, expressed in ms

Read read operation is time-consuming

Write write operation is time-consuming

$mongotop-- port 28018 15connected to: 127.0.0.1 ns total read write 28018-10-08T06:43:38 game_server_jd23.player_message 198ms 138ms 60ms game_server_jd33.player_instance 173ms 125ms 48ms game_server_jd02.player_backpack 132ms 126ms 6ms game_server_jd03.player_backpack 117ms 115ms 2ms local.oplog.rs 112ms 112ms 0ms game_server_jd02.player_message 103ms 103ms 0ms game_server_jd12.player_backpack 82ms 63ms 19ms game_server_jd678new.player_message 80ms 80ms 0ms game_server_jd22.player_backpack 68ms 66ms 2ms

Mongotop-- port 28018-- locks 15connected to: 127.0.0.1 locks 15connected to 28018 db total read write 2014-10-08T07:11:31 game_server_jd02 785ms 562ms 223ms game_server_jd45 589ms 255ms 334ms local 501ms 258ms 243ms game_server_jd01 493ms 155ms 338ms game_server_jd03 376ms 228ms 148ms game_server_jd16789 362ms 208ms 154ms. 298ms 10ms 288ms game_server_jd35 250ms 169ms 81ms game_server_jd12 218ms 156ms 62ms