45 lines
1.4 KiB
Markdown
45 lines
1.4 KiB
Markdown
## 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](http://www.linuxatemyram.com/).
|
|
|
|
- **total**: total physical memory available
|
|
- **available**: the actual amount of available memory that can be given instantly
|
|
to processes that request more memory in bytes; In linux kernel 3.14+, this
|
|
is available natively in /proc/meminfo. In other platforms, this is calculated by
|
|
summing different memory values depending on the platform
|
|
(e.g. free + buffers + cached on Linux).
|
|
It is supposed to be used to monitor actual memory usage in a cross platform fashion.
|
|
- **available_percent**: Percent of memory available, `available / 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 `used / total * 100`
|
|
|
|
## Measurements:
|
|
#### Raw Memory measurements:
|
|
|
|
Meta:
|
|
- units: bytes
|
|
- tags: `nil`
|
|
|
|
Measurement names:
|
|
- mem_total
|
|
- mem_available
|
|
- mem_used
|
|
- mem_free
|
|
|
|
#### Derived usage percentages:
|
|
|
|
Meta:
|
|
- units: percent (out of 100)
|
|
- tags: `nil`
|
|
|
|
Measurement names:
|
|
- mem_used_percent
|
|
- mem_available_percent
|