sysmon/plugins/os-linux/README.md

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# Linux Plugin
## Processor Extension
Reports the following metrics seen:
- **user** - Percentage of CPU time spend on user processes.
- **sys** - Percentage of CPU time spend on system processes.
- **wait** - Percentage of CPU time spend on waiting (for i/o).
- **idle** - Percentage of CPU time spend on idle (doing nothing).
- **busy** - Percentage of CPU time not spend on idle (working).
## Memory Extension
Reports the following metrics, from the *free* command:
- **total** - The total amount of (installed) memory (in KB).
- **used** - Used memory (calculated as total - free - buffers - cache) (in KB).
- **free** - Unused memory (MemFree and SwapFree in /proc/meminfo) (in KB).
- **shared** - Memory used (mostly) by tmpfs (Shmem in /proc/meminfo) (in KB).
- **buffers** - Sum of buffers and cache (in KB).
- **available** - Estimation of how much memory is available for starting new applications, without swapping (in KB).
- **usage** - Percentage of memory used out of the total amount of memory.
## Disk Extension
Only reports first device found. Improvements on the TODO.
Metrics reported are:
- **device** - Name of device.
- **reads** - The total number of KB read.
- **writes** - The total number of KB written.