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THE FEUTEX TOOLKIT

Hedged Request Load Overhead

Estimate speculative duplicate traffic and additional compute time.

Computer Systems workspace● Runs in your browser
01 Your input
02 Your result
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FormulaAdditional request rate = rate*tail/100; Additional concurrent work = rate*tail/100*runtime/1000

Made for real tasks

  • Estimate speculative duplicate traffic and additional compute time.
Explore step-by-step workflows →

Worked example

Inputs

Original request rate
1000 requests/s
Requests reaching hedge delay
5 %
Extra work per hedge
20 ms

Expected results

Additional request rate
50 requests/s
Additional concurrent work
1 seconds/second

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter original request rate, requests reaching hedge delay, extra work per hedge in the displayed units.
  2. Calculate the scenario, then compare it with measurements before changing a system.

Try this example

{
  "rate": 1000,
  "tail": 5,
  "runtime": 20
}

Accuracy and scope

Uses measured tail share and extra runtime; not a prediction of latency improvement.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.