cypress: `cy.visit` in 3.3.1 is 2x-4x as slow as 3.2.0

Current behavior:

Running my tests in 3.2.0 takes 1 hour 54 minutes. Running my tests in 3.3.1 takes 4 hours 41 minutes.

(This is running on headless electron using cypress.run with the module API; I haven’t measured it with cypress open).

Both cases are running on the same WIndows 10 VM, and not using parallelization.

Desired behavior:

I’d like my tests to take less than 2 hours.

Versions

Cypress 3.3.1

About this issue

Original URL
State: closed
Created 5 years ago
Reactions: 5
Comments: 37 (17 by maintainers)

Most upvoted comments

@danceric0919 We have a fix in place, it will be out with the next patch release (3.3.2).

flotwig on Jun 11, 2019

We’re triangulating a few different issues in the 3.3.x releases and several may all be related to the same underlying problem. Likely will have a patch in the next few days and then we can go from there.

brian-mann on Jun 3, 2019

I am fairly certain that this is not OS-specific, as I’ve seen it both on Windows 10 and Mac OS.

fr0 on Jun 4, 2019

I wrote a small test case to benchmark cy.visit:

describe '', ->
  it 'benchmark cy.visit', ->
    Cypress._.times 100, ->
      cy.visit('/index2.html')

    cy.wrap ->

In Cypress 3.2.0, this executes in 17.25 seconds.

In Cypress 3.3.1, this executes in 61.58 (!) seconds.

So it does look like the issue is with cy.visit(). I recorded a short video of the benchmark which shows that every few cy.visit()s, it seems to hang for a couple of seconds before continuing: https://drive.google.com/file/d/15a26L9dC9EQHFJKd-hQfvxkxMnFgmPmN/view?usp=sharing

Looks like #4349 is a duplicate of this issue, then. I’ll close that issue and log future progress on tracking down the cy.visit slowness here.

flotwig on Jun 4, 2019

@flotwig We are running 3.3.1 on Windows 10 & using headless electron. We don’t have proxy

nthum on Jun 4, 2019

Sure, I’ll work on trying to get a reproducible example.

fr0 on Jun 20, 2019