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## Name
Profiler - Serenity process profiler
## Synopsis
```**sh
$ Profiler [--pid PID] [perfcore file]
```
## Description
Profiler facilitates process performance profiling and provides a GUI offering
visual graph and tree representations to easily navigate generated profiling
information.
If no arguments are provided, a window containing a list of running processes
is presented, allowing a process to be selected for profiling.
Profiling information is written to `perfcore.<pid>` in the working directory
and opened immediately for browsing following termination of profiling.
Profiler can also load performance information from previously created
`perfcore` files.
## Options
* `-p PID`, `--pid PID`: PID to profile
## Examples
Profile running Shell process:
```sh
$ Profiler -p $(pidof Shell)
```
Open a previously created perfcore file for browsing:
```sh
$ Profiler perfcore.123
```
## See also
* [`perfcore`(5)](../man5/perfcore.md)
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