Counter metrics are operating system metrics in the Performance Insights dashboard. To help identify and analyze performance problems, you can correlate counter metrics with DB load.
Performance Insights operating system counters
The following operating system counters are available with Amazon DocumentDB Performance Insights.
| Counter | Type | Metric |
|---|---|---|
| active | memory | os.memory.active |
| buffers | memory | os.memory.buffers |
| cached | memory | os.memory.cached |
| dirty | memory | os.memory.dirty |
| free | memory | os.memory.free |
| inactive | memory | os.memory.inactive |
| mapped | memory | os.memory.mapped |
| pageTables | memory | os.memory.pageTables |
| slab | memory | os.memory.slab |
| total | memory | os.memory.total |
| writeback | memory | os.memory.writeback |
| idle | cpuUtilization | os.cpuUtilization.idle |
| system | cpuUtilization | os.cpuUtilization.system |
| total | cpuUtilization | os.cpuUtilization.total |
| user | cpuUtilization | os.cpuUtilization.user |
| wait | cpuUtilization | os.cpuUtilization.wait |
| one | loadAverageMinute | os.loadAverageMinute.one |
| fifteen | loadAverageMinute | os.loadAverageMinute.fifteen |
| five | loadAverageMinute | os.loadAverageMinute.five |
| cached | swap | os.swap.cached |
| free | swap | os.swap.free |
| in | swap | os.swap.in |
| out | swap | os.swap.out |
| total | swap | os.swap.total |
| rx | network | os.network.rx |
| tx | network | os.network.tx |
| numVCPUs | general | os.general.numVCPUs |
