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add MemAvailable, Buffers and Cached from /proc/meminfo to in_mem plugin #467

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add MemAvailable, Buffers and Cached from /proc/meminfo to in_mem plugin #467

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10 changes: 5 additions & 5 deletions pipeline/inputs/memory-metrics.md
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
# Memory Metrics

The **mem** input plugin, gathers the information about the memory and swap usage of the running system every certain interval of time and reports the total amount of memory and the amount of free available.
The **mem** input plugin, gathers the information about the memory and swap usage of the running system every certain interval of time and reports the total, buffer and free memory (as reported by [sysinfo](https://man7.org/linux/man-pages/man2/sysinfo.2.html)) and the memory available and cached (as reported by `/proc/meminfo`).

## Getting Started

Expand All @@ -17,10 +17,10 @@ Fluent Bit v1.x.x
* https://fluentbit.io

[2017/03/03 21:12:35] [ info] [engine] started
[0] memory: [1488543156, {"Mem.total"=>1016044, "Mem.used"=>841388, "Mem.free"=>174656, "Swap.total"=>2064380, "Swap.used"=>139888, "Swap.free"=>1924492}]
[1] memory: [1488543157, {"Mem.total"=>1016044, "Mem.used"=>841420, "Mem.free"=>174624, "Swap.total"=>2064380, "Swap.used"=>139888, "Swap.free"=>1924492}]
[2] memory: [1488543158, {"Mem.total"=>1016044, "Mem.used"=>841420, "Mem.free"=>174624, "Swap.total"=>2064380, "Swap.used"=>139888, "Swap.free"=>1924492}]
[3] memory: [1488543159, {"Mem.total"=>1016044, "Mem.used"=>841420, "Mem.free"=>174624, "Swap.total"=>2064380, "Swap.used"=>139888, "Swap.free"=>1924492}]
[0] memory: [1488543156, {"Mem.total"=>2037988, "Mem.used"=>1890616, "Mem.free"=>147372, "Mem.available"=>1236028, "Mem.buffer"=>92020, "Mem.cache"=>1374616}]
[1] memory: [1488543157, {"Mem.total"=>2037988, "Mem.used"=>1890616, "Mem.free"=>147372, "Mem.available"=>1236028, "Mem.buffer"=>92020, "Mem.cache"=>1374616}]
[2] memory: [1488543158, {"Mem.total"=>2037988, "Mem.used"=>1890616, "Mem.free"=>147372, "Mem.available"=>1236028, "Mem.buffer"=>92020, "Mem.cache"=>1374616}]
[3] memory: [1488543159, {"Mem.total"=>2037988, "Mem.used"=>1890616, "Mem.free"=>147372, "Mem.available"=>1236028, "Mem.buffer"=>92020, "Mem.cache"=>1374616}]
```

### Configuration File
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