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docs: improve profiling docs (#1869) 

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
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Marko Mikulicic 2021-07-02 12:47:13 +02:00 committed by GitHub
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0 0% 100% 1 1.08% <alloc::vec::Vec<T,A> as core::iter::traits::collect::Extend<T>>::extend
```
# Interactive visualizations
The `go tool pprof` command can also open an interactive visualization in a web browser page,
that allows you to render a call graph, or a flamegraph or other visualizations, and also search for symbols etc. See:
```shell
go tool pprof -http=localhost:6060 'http://localhost:8080/debug/pprof/profile?seconds=30'
```
# Use the built in flame graph renderer
You may not always have the `go` toolchain on your machine.
IOx also knows how to render a flamegraph SVG directly if opened directly in the browser:
For example, if you aim your browser at an IOx server with a URL such as http://localhost:8080/debug/pprof/profile?seconds=5