Support » Plugin: Jetpack - WP Security, Backup, Speed, & Growth » CORE Dumps On Several Sites with Jetpack/W3 Total Cache/Builder Themes

  • Opening tickets with all three vendors involved here.

    Running
    v. 4.2.2 of Jetpack
    v. 0.9.4.1 of W3 Total Cache
    v. 5.1.5 of Builder

    Several of my sites are getting CORE dumps since around 9:00 PM on August 30 (Central Time). I believe that the time coincides with a reboot of the server, but not sure why that would coincide with this. I conducted monthly maintenance on all of my sites this past Sunday night (8/28). I have not upgraded any plugins, themes, or WordPress Core since then.

    My temporary solution to this is to deactivate JetPack.

    Hosted at A2 Hosting.
    Running CentOS 6.7 (2.6.32-042stab108.2)
    PHP 5.5.24

    The dumps occur primarily when:
    Running wp-cron.php
    Running wp-admin/admin-ajax.php
    When logging into the site (after entering password)
    When accessing the Jetpack Settings page
    When activating or deactivating any plugins or individual settings of Jetpack (also, when activating or deactivating plugins OR individual settings of Jetpack, I end up on a 404 page)
    When running some other backend activities such as backups (using BackupBuddy).

    If I deactivate Jetpack, all of these issues go away.
    If I deactivate W3 Total Cache, all of these issues go away.
    If I switch to the Twenty Fifteen theme, all of these issues go away.

    I have found that the following minimal configuration precipitates the issue on one of the sites:

    Jetpack
    W3 Total Cache
    iThemes Builder Theme (I’m specifically using the City Church child theme)

    The following lists are from one of the sites.

    Plugin list:

    +——————————–+——–+———–+———+
    | name | status | update | version |
    +——————————–+——–+———–+———+
    | backupbuddy | active | none | 7.1.6.0 |
    | builder-style-manager | active | none | 0.7.15 |
    | carousel | active | none | 2.0.30 |
    | easy-theme-and-plugin-upgrades | active | none | 2.0.0 |
    | google-analytics-async | active | none | 3.1.5.1 |
    | gravityforms | active | none | 2.0.6 |
    | ithemes-security-pro | active | available | 2.9.0 |
    | ithemes-sync | active | available | 1.13.0 |
    | jetpack | active | none | 4.2.2 |
    | rotating-images | active | none | 1.3.7 |
    | rotatingtext | active | none | 1.0.41 |
    | ultimate-branding | active | none | 1.8.2 |
    | user-switching | active | none | 1.0.9 |
    | videoshowcase | active | none | 1.1.69 |
    | w3-total-cache | active | none | 0.9.4.1 |
    | wpmudev-updates | active | none | 4.1.2 |
    | wp-robots-txt | active | none | 1.1 |
    | wp-smush-pro | active | none | 2.4.5 |
    | wordpress-seo | active | none | 3.4.2 |
    +——————————–+——–+———–+———+
    Theme List:

    +————————–+———-+——–+———+
    | name | status | update | version |
    +————————–+———-+——–+———+
    | Builder | parent | none | 5.1.5 |
    | BuilderChild-City-Church | active | none | 4.0.3 |
    | BuilderChild-Default | inactive | none | 4.0.1 |
    | twentyfifteen | inactive | none | 1.6 |
    +————————–+———-+——–+———+

    Some of the dumps appear in the root folder, and some in the wp-admin folder. Have also seen some in a plugin folder as well on another site (jquery-t-countdown-widget/js/).

    Thanks in advance,

    Art Smith
    Ambrosia Web Technology

    https://wordpress.org/plugins/jetpack/

Viewing 7 replies - 1 through 7 (of 7 total)
  • Well, I’ve just seen the issue happen with W3 Total Cache deactivated.

    Plugin Contributor Ryan Cowles

    (@ryancowles)

    Thanks for the report! The next thing to check is whether any other plugins on your site may have a conflict. Please check our Known Issues list here:
    Home

    Could you also try to deactivate all plugins on your site, aside from Jetpack? See if that resolves the issue. If it does, then activate them one at a time to confirm which is causing the conflict.

    If that doesn’t help, please rule out a theme conflict by temporarily changing your site’s theme to a default theme (such as Twenty Sixteen) and trying again.

    Please let me know how that works for you, and we can go from there!

    Core dumps are really more fundamental than a simple plugin/theme conflict and the normal troubleshooting approach really doesn’t apply.

    This should be referred to the host support who can properly analyse a core dump file as this has to be done in the context of the “program” that caused the core dump which is not specifically WordPress or any PHP scripting addition to that but rather the underlying hosting programs that are actually running those.

    You will be messing around for ages trying to identify what may be causing the core dump if you just play around with things are the WordPress level and it will all be guesswork without any proper evidence from analysing a core dump…that’s really what a host support is for, investigating stuff going wrong with the hosting…

    Hey, Ryan, I obviously wasn’t clear. I have already done a plugin/theme conflict analysis. That’s how I reached the conclusion in my report of:

    I have found that the following minimal configuration precipitates the issue on one of the sites:

    Jetpack
    W3 Total Cache
    iThemes Builder Theme (I’m specifically using the City Church child theme)

    Since then I realized W3 Total Cache was not a factor. This is a conflict between Jetpack and certain iThemes Builder Child Themes (I have on site that is using a Build Theme that is not having this issue).

    So to be clear, Jetpack all by itself has no problem. Jetpack + some Builder themes is a broken situation right now.

    @drprotocols: thanks for your comment, and that’s a good point. I can tell you that I have had limited luck getting my hosting company to dig into issues like this in the past, but I did also submit a ticket to my them as well. Hopefully they will be able to help identify the cause. It’s definitely a PHP dump and I’ve used the dumps to narrow down what script is running when it fails but without the debug symbolics it’s impossible to dig into… I’m expecting that they will have to compile up a version of PHP to get more information. It will be interesting to see if the Host support can identify the root cause.

    I appreciate all the help!!!

    Art

    Plugin Author Jeremy Herve

    (@jeherve)

    Jetpack Mechanic 🚀

    @ambrosiawt We’re about to release Jetpack 4.3, and that new update will include some fixes to Jetpack’s synchronization process. That could fix the issue, as your errors pointed to wp-cron, among other things.

    If you’d like to give the new Jetpack a try, you could install Jetpack 4.3 Release Candidate 3 on your site today, and see how things go. You can follow the instructions here to grab the Beta testing plugin:
    Jetpack Beta

    Let us know how it goes!

    Jeremy, I went ahead and setup a test site, confirmed that I can still recreate the issue, and then installed 4.3. The problem appears to be gone.

    This looks like a complete rewrite of, well, the front end at least… I looked at the plugin folder and it appears totally reorganized, which adds to the thought that at least some portion of the plugin is rewritten. But regardless, I’m good with closing this issue. I will revalidate when 4.3 is released, and if I run into the problem again I will open a new case.

    Thanks!

    Art

    Plugin Author Jeremy Herve

    (@jeherve)

    Jetpack Mechanic 🚀

    This looks like a complete rewrite of, well, the front end at least… I looked at the plugin folder and it appears totally reorganized, which adds to the thought that at least some portion of the plugin is rewritten.

    We’ve indeed created a new Admin interface in 4.3, but we also shipped some performance improvements that should address the issues you were having.

    To test the new admin interface, you can go to the Jetpack menu in your dashboard.

Viewing 7 replies - 1 through 7 (of 7 total)
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