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windows_exporter/docs/collector.pagefile.md
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# pagefile collector
The pagefile collector exposes metrics about the pagefile usage
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Metric name prefix | `pagefile`
Data source | Performance counter `Paging File` (`% Usage` and its base), `GetPerformanceInfo` (page size)
Enabled by default? | No
## Flags
None
## Metrics
| Name | Description | Type | Labels |
|--------------------------------|-----------------------------------------------------------------------------------------------------------------------------|-------|--------|
| `windows_pagefile_free_bytes` | Number of bytes that can be mapped into the operating system paging files without causing any other pages to be swapped out | gauge | `file` |
| `windows_pagefile_limit_bytes` | Current size of the paging file in bytes | gauge | `file` |
Both values come from the `% Usage` counter: its raw value is the number of pages in use and its base is the size of
the paging file in pages. They are multiplied by the system page size. A paging file without a valid size is left out.
### Example metric
```
# HELP windows_pagefile_free_bytes Number of bytes that can be mapped into the operating system paging files without causing any other pages to be swapped out
# TYPE windows_pagefile_free_bytes gauge
windows_pagefile_free_bytes{file="C:\\pagefile.sys"} 6.025797632e+09
# HELP windows_pagefile_limit_bytes Current size of the paging file in bytes
# TYPE windows_pagefile_limit_bytes gauge
windows_pagefile_limit_bytes{file="C:\\pagefile.sys"} 6.442450944e+09
```
## Useful queries
_This collector does not yet have useful queries, we would appreciate your help adding them!_
## Alerting examples
_This collector does not yet have alerting examples, we would appreciate your help adding them!_