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cy.visit() performance degradation

See original GitHub issue

Current behavior

We’re using Cypress to test large pages (several megs) and noticed severe performance degradation since upgrading to version 7.2.0. It takes over 20 seconds to visit the page. Majority of time is spent on TTFB. We have also noticed considerable increase in memory usage.

The problem persists with versions 7.3.0 and 7.4.0.

Loading the same page outside of Cypress automation takes fraction (~3 seconds) as the long TTFB period is not present

Desired behavior

Loading the page via cy.visit(); should take similar time (~3 seconds) as it does when visiting the page in browser and as it did prior to version 7.2.0.

Test code to reproduce

Fork with repro: https://github.com/milankonir/cypress-test-tiny

Screenshot from repro:

Versions

Affected versions: 7.2.0, 7.3.0, 7.4.0 Last working version: 7.1.0

Issue Analytics

State:
Created 2 years ago
Reactions:4
Comments:5 (2 by maintainers)

Top GitHub Comments

1reaction

cypress-bot[bot]commented, Aug 9, 2021

The code for this is done in cypress-io/cypress#17408, but has yet to be released. We’ll update this issue and reference the changelog when it’s released.

0reactions

cypress-bot[bot]commented, Aug 16, 2021

Released in 8.3.0.

This comment thread has been locked. If you are still experiencing this issue after upgrading to Cypress v8.3.0, please open a new issue.

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