---
title: "Baseline Testing & Comparison"
description: "Set a baseline test result and compare future tests to track performance changes over time. This helps identify regressions and improvements. ## Setting a Baseline After running a test, click 'Set as Baseline' to save that test result as your…"
url: "https://ssh-assistant.com/docs/baseline-testing-comparison/"
updated: "2025-12-06"
category: Site Load Tester / Load tester
---

# Baseline Testing & Comparison

Set a baseline test result and compare future tests to track performance changes over time. This helps identify regressions and improvements.

## Setting a Baseline

After running a test, click 'Set as Baseline' to save that test result as your reference point. Each URL can have its own baseline.

**Steps:**

1. Run a test with your desired configuration

2. Review the results

3. Click 'Set as Baseline' button

4. The baseline is now saved for that URL

## Automatic Comparison

When you run a new test for a URL that has a baseline, the app automatically shows a comparison section highlighting differences.

**Steps:**

1. Run a test for a URL with an existing baseline

2. Comparison appears automatically after test completes

3. See side-by-side metrics: Baseline vs Current

4. Color-coded indicators show improvements (green) and regressions (red)

## Understanding Comparison Metrics

The comparison shows percentage changes for key metrics, helping you quickly identify performance changes.

**Metrics:**

- **Response Time:** Lower is better (green = faster, red = slower)
- **Success Rate:** Higher is better (green = improved, red = decreased)
- **Requests per Second:** Higher is better (green = more throughput)
- **Total Requests:** Reference metric showing test scale

## Managing Baselines

You can update or clear baselines as needed. Baselines are stored per URL, so different websites can have different baselines.

**Actions:**

- **Update Baseline:** Click 'Update Baseline' to replace existing baseline
- **Clear Baseline:** Click 'Clear Baseline' to remove it
- **Set from History:** Open History and set any past test as baseline
- **Baseline Indicator:** Form view shows when a URL has a baseline set

## Baseline Use Cases

- **Performance Monitoring:** Track performance over time and catch regressions before they impact users
- **Regression Detection:** Automatically identify when performance degrades compared to your baseline
- **Improvement Validation:** Verify that optimizations and improvements actually improve performance
- **A/B Testing:** Compare performance of different server configurations or deployments