1.4 KiB
1.4 KiB
Telegraf Plugin: MEM
Description
The mem plugin collects memory metrics, defined as follows. For a more complete
explanation of the difference between used and actual_used RAM, see
Linux ate my ram.
- total: total physical memory available
- actual_free: the actual amount of available memory that can be given instantly to processes that request more memory in bytes; this is calculated by summing different memory values depending on the platform (e.g. free + buffers + cached on Linux) and it is supposed to be used to monitor actual memory usage in a cross platform fashion.
- actual_used: inverse of actual_free, see above
- actual_used_percent: the percentage usage calculated as (total - actual_used) / total * 100
- used: memory used, calculated differently depending on the platform and designed for informational purposes only.
- free: memory not being used at all (zeroed) that is readily available; note that this doesn't reflect the actual memory available (use 'available' instead).
- used_percent: the percentage usage calculated as (total - used) / total * 100
Measurements:
Raw Memory measurements:
Meta:
- units: bytes
- tags:
nil
Measurement names:
- mem_total
- mem_actual_free
- mem_actual_used
- mem_used
- mem_free
Derived usage percentages:
Meta:
- units: percent (out of 100)
- tags:
nil
Measurement names:
- mem_used_percent
- mem_actual_used_percent