Updated to include new input plugin doc for Windows System Statistics…

…. Applies to #2139.

Signed-off-by: Eric D. Schabell <[email protected]>

pipeline/inputs/windows-system-statistics.md

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+# Windows System Statistics (winstat)
+
+The _Windows System Statistics_ (`winstat`) input plugin collects system-level statistics from Windows environments, including CPU usage, memory consumption, disk I/O, and network activity. This plugin uses Windows Performance Counters to gather real-time system metrics.
+
+{% hint style="info" %}
+
+This plugin is only available on Windows operating systems and requires appropriate permissions to access Windows Performance Counters.
+
+{% endhint %}
+
+## Configuration parameters
+
+The plugin supports the following configuration parameters:
+
+| Key             | Description                                                                                             | Default |
+|:----------------|:--------------------------------------------------------------------------------------------------------|:--------|
+| `Interval_Sec`  | Polling interval in seconds.                                                                            | `1`     |
+| `Interval_NSec` | Polling interval in nanoseconds.                                                                        | `0`     |
+| `Threaded`      | Indicates whether to run this input in its own [thread](../../administration/multithreading.md#inputs). | `false` |
+
+## Metrics collected
+
+The `winstat` plugin collects the following system statistics:
+
+| Metric Category | Description                                                                 |
+|:----------------|:----------------------------------------------------------------------------|
+| CPU             | CPU usage percentage, including user and system time                      |
+| Memory          | Memory usage including total, available, and used memory                  |
+| Disk            | Disk I/O statistics including read/write operations and throughput       |
+| Network         | Network interface statistics including bytes sent/received and packet counts |
+
+## Get started
+
+To collect Windows system statistics, you can run the plugin from the command line or through the configuration file:
+
+### Command line
+
+You can run the plugin from the command line:
+
+```shell
+fluent-bit -i winstat -o stdout
+```
+
+Which returns information similar to the following:
+
+```text
+...
+[0] winstat: [1699123456.123456789, {"cpu.usage"=>15.3, "cpu.user"=>10.2, "cpu.system"=>5.1, "memory.total"=>8192, "memory.available"=>4096, "memory.used"=>4096, "disk.read_bytes"=>1024000, "disk.write_bytes"=>512000, "network.bytes_sent"=>2048000, "network.bytes_recv"=>1024000}]
+[1] winstat: [1699123457.123456789, {"cpu.usage"=>16.1, "cpu.user"=>11.0, "cpu.system"=>5.1, "memory.total"=>8192, "memory.available"=>4080, "memory.used"=>4112, "disk.read_bytes"=>1025000, "disk.write_bytes"=>515000, "network.bytes_sent"=>2050000, "network.bytes_recv"=>1025000}]
+...
+```
+
+### Configuration file
+
+In your main configuration file append the following:
+
+{% tabs %}
+{% tab title="fluent-bit.yaml" %}
+
+```yaml
+pipeline:
+  inputs:
+    - name: winstat
+      tag: winstat
+      interval_sec: 1
+      interval_nsec: 0
+
+  outputs:
+    - name: stdout
+      match: '*'
+```
+
+{% endtab %}
+{% tab title="fluent-bit.conf" %}
+
+```text
+[INPUT]
+  Name          winstat
+  Tag           winstat
+  Interval_Sec  1
+  Interval_NSec 0
+
+[OUTPUT]
+  Name   stdout
+  Match  *
+```
+
+{% endtab %}
+{% endtabs %}
+
+Total interval (sec) = `Interval_Sec` + (`Interval_NSec` / 1000000000)
+
+For example: `1.5s` = `1s` + `500000000ns`
+
+## Notes
+
+- The `winstat` plugin requires Windows Performance Counters access. Ensure Fluent Bit is running with appropriate permissions.
+- This plugin is Windows-only and will not work on Linux, macOS, or other operating systems.
+- For Prometheus-based metrics collection on Windows, consider using the [Windows Exporter Metrics](windows-exporter-metrics.md) input plugin instead.