LoadTwin
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YOUR SIMULATION STARTS HERE

Set up your service.

Use measurements from one load test to define your baseline. Then choose the environment you want to evaluate and the limits it needs to meet.

Saved in this browser All tools use the same setup Change values any time
01

Name your service

Give this setup a recognizable name for your saved scenarios.

Example: Checkout API — staging benchmark
02

Where did you run the test?

Describe the machines that produced your measured result. This is the baseline, not necessarily your target.

Load-test environment
Instances behind the load balancer.
GB
Requests one node can process at once, e.g. the server's max threads.
Size of the database connection pool.
More settings
ms
Mbps
03

What did the test measure?

Use values from a steady portion of the run, excluding warm-up traffic.

Observed load-test results
req/s
Average requests per second while measuring.
%
ms
95% of requests were faster than this.
%
%
More settings
KB
Request plus response size.
04

What setup should we evaluate?

Describe the environment you want to run in production. LoadTwin uses the baseline to simulate this target.

Target environment
Instances behind the load balancer.
GB
Requests one node can process at once, e.g. the server's max threads.
Size of the database connection pool.
More settings
ms
Mbps
05

What counts as acceptable?

Set the response-time, error and resource limits your target environment must meet.

Service level thresholds
ms
%
%
%
+Database & dependenciesOptional tuning if you know your query concurrency and waiting time
Shared database model
%
Share of non-CPU waiting spent in the database; the rest is external calls.
queries
Concurrent queries the database handles for all nodes together. 0 = no limit.
Preview the measured baseline
Baseline from your measurements
Load
40 req/s
CPU
62%
p95
420 ms
Errors
0.1%
Within SLA

This visual reflects the load-test values you entered. It is your starting point, not a completed simulation.

Manage your setup

Import an earlier configuration or download your saved values as JSON.

Your service is up to dateChanges are stored in this browser.
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