Slowness When Publishing a Post Using Classic Editor

  • Resolved simonbbs

    (@simonbbs)


    3 years, 1 month ago

    Hey Guys,

    We’ve been experiencing slowness on our site, particularly when trying to create a new post, or publish a post.

    I did a ton of conflict testing on the dev site today, and was able to narrow it down to the Classic Editor plugin.

    With all else (except woocommerce) disabled, if I had the classic editor plugin active it took ~10-15 seconds after I clicked “Add New” to load me to the new post page, and it takes 15-20 seconds to publish the post.

    I can see a large spike in New Relic at that step if the Classic Editor plugin is active.

    As soon as the Classic Editor plugin was disabled the time it took after clicking “Add New” dropped to ~3-4 seconds, and the publishing is basically instant.

    What’s weird is on the development site I was able to turn the plugin back on, and the slowness didn’t appear to return, but on the production site the slowness only goes away if we deactivate Classic Editor. When the plugin is active the slowness returns.

    I’ve got screenshots and the like from New Relic, however, I didn’t want to share those on this forum. I’m happy to share those with whatever developers may need them!

    Are you aware of any slowness issues when using the Classic Editor plugin?

Viewing 6 replies - 1 through 6 (of 6 total)
  • Moderator jordesign

    (@jordesign)

    3 years, 1 month ago

    Hey @simonbbs – it sounds like you’ve done some extensive testing – thank you. In my testing of a brand new site with just the Classic Editor active I’ve been unable to recreate the kind of slowness you describe.

    In terms of your conflict testing – was the Classic Editor your only plugin active when you had the issue? And was it using one of the default (Twenty Twenty Three/Two/One) themes?

    Thread Starter simonbbs

    (@simonbbs)

    3 years, 1 month ago

    Hey @jordesign

    Thanks for the follow up!

    I hadn’t gone *as* extensively as you highlighted in my testing yesterday, however, I have this morning.

    I switched our dev site to the 2020 theme. Deactivated ALL plugins other than Classic Editor and ran my tests.

    With the Default 2020 Theme and only Classic Editor active if I click the “Add New Post” button it takes ~30 seconds to load the new post page, and ~45-60 seconds to actually publish the post when I click “Publish.”

    If I make no other changes other than turning off the Classic Editor plugin and I click the “Add New Post” button it takes ~2 seconds to load the new post page, and ~1 second to actually publish the post when I click “Publish”

    I have a video that shows the giant spike in New Relic when the Classic Editor plugin is active and I try to create a post, versus the negligible impact we see in New Relic when the Classic Editor plugin is not active.

    That video does provide a stack trace for both tests in New Relic, however, I’m a little hesitant to supply backend screenshots / videos on a public forum.

    Is there a private way I can pass that to you?

    One last test I ran as I was finishing typing this response: We were on WP version 6.1.1 when I ran all of the referenced tests and filmed that video.

    Just to rule it out I did update WordPress to 6.2.

    I see the same behavior when running the same tests on WP 6.2.

    Thanks so much!

    -Simon

    Thread Starter simonbbs

    (@simonbbs)

    3 years, 1 month ago

    Hey @jordesign

    You can view the video with the stack traces at the link here: https://vimeo.com/820528854/09c0447824?share=copy

    Thanks so much!

    -Simon

    thelmachido a11n

    (@thelmachido)

    3 years ago

    Hi @simonbbs just checking if you are still experiencing this issue, I tried to access the video but I need a password.

    Thread Starter simonbbs

    (@simonbbs)

    3 years ago

    Hey @thelmachido,

    That video was removed as we tracked things down.

    The issue was not specifically related to Classic Editor, but rather the “SELECT wp_sorb_users.ID,wp_sorb_users.user_login,wp_sorb_users.display_name
    FROM wp_sorb_users INNER JOIN wp_sorb_usermeta ON ( wp_sorb_users.ID = wp_sorb_usermeta.user_id ) INNER JOIN wp_sorb_usermeta AS mt? ON ( wp_sorb_users.ID = mt?.user_id )” db query.

    That issue went away when we deactivated Classic Editor as the Gutenberg editor does not try to pull in the author list on the post screen.

    The Classic Editor plugin was a false alarm, however, it did help us track down and optimize that slow query.

    Thanks so much!

    thelmachido a11n

    (@thelmachido)

    3 years ago

    Hi @simonbbs thank you for the update, I am glad you managed to figure this out. If you have any questions feel free to reach out on forums

Viewing 6 replies - 1 through 6 (of 6 total)

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