https://github.com/snewcomer/ntimes

Run a command N times
https://github.com/snewcomer/ntimes

Last synced: 3 months ago
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Run a command N times

• Host: GitHub
• URL: https://github.com/snewcomer/ntimes
• Owner: snewcomer
• Created: 2020-12-31T17:27:40.000Z (about 4 years ago)
• Default Branch: main
• Last Pushed: 2021-01-25T03:19:46.000Z (almost 4 years ago)
• Last Synced: 2024-10-03T12:23:31.870Z (3 months ago)
• Language: Rust
• Size: 10.7 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# ntimes

Execute a command N times

Often times, I want to obtain an average/median of request timing stats for a particular endpoint.  This binary makes

it possible for you to obtain reasonable stats by executing your command ntimes.

Reasonable: You might be optimizing a specific endpoint, trimming unnecesary data.  ntimes can help you measure and obtain reasonable confidence.

Not so much: Hitting an endpiont that returns HTML.  While this may be insightful, first input delays is likely more of a concern.  Once your application/browser

receives its first bytes, there is still a long way to go before the user can start interacting with your site.

### Links

https://blog.cloudflare.com/a-question-of-timing/

## Usage

To send a sync process and wait for each subsequent command to finish.

```

$ ntimes 100 -- curl 'https://google.com' -s -o /dev/null -w "%{time_starttransfer}\n"

```

Sends command to child process.  This starts subshells in parallel.

```

$ ntimes 100 -p -- curl 'https://google.com' -s -o /dev/null -w "%{time_starttransfer}\n"

```

Lastly, to gather your metrics, you can redirect the stdout to the stdin of another command.

```

$ ntimes 100 -- curl 'https://google.com' -s -o /dev/null -w "%{time_starttransfer}\n" | percentile

```

[percentile](https://github.com/yuya-takeyama/percentile)

## License

The MIT License