Support » Fixing WordPress » WP Super Cache sometimes ignites a blank Home Page! Need to restart Apache

  • Hi all,

    here’s my problem:

    with Super Cache enabled, the home page of my site sometimes gets completely blank. I can’t find what triggers this behavior, it may happen twice a day, sometimes more than that. When this thing happens, the rest of the blog is loading super correctly and in a very fast way. The problem is limited to the home page.

    If I turn OFF Super Cache (not disabling the plugin, just selecting OFF from the panel) the home page goes a little nuts. It loads again but it stops before loading the sidebars and the footer.

    Here’s the way I solve the problem (but it doesn’t prevent the problem from happening again, obviously):

    I log into my server administration panel (The site is on a dedicated server) and I restart the Apache webserver. After that, it’s all back to normal.

    Sometimes when I restart just after discovering the blank page, with Wp-SuperCache still ON, the Apache restart isn’t enough and the white page persists.

    In that case i Turn OFF Wp Super Cache (the home page goes nuts) I restart Apache, (the site goes back to normal) and then I turn Wp Super Cache ON again.

    So, someone has a hint of what’s going on here?

Viewing 15 replies - 1 through 15 (of 28 total)
  • Hi camillomiller,

    I have the same problem, but to temporally solve the problem just clear the cache and the homepage will be ok.

    Still nobody has the answer to this issue, but there are aldready some topics: topic 1, topic 2. About this.

    Hope we’ll a fix soon.

    I had a similar problem recently. Every single page of my blog turned up blank when I tried to access it, even wp-login and admin so I had no way of getting to the dashboard. I hadn’t touched to blog for about a week and I didn’t do any upgrades recently so this came totally by surprise. It took me an hour to find the cause which was wp-cache. I had to use ftp to deleted that plugin and the cache, everything went back to normal afterwards.

    Was your blog hacked? Did anything show in your error_log?

    I just had the same issue – blank page everywhere (additionally no www. enforcing), had to restart Apache. Everything works fine now.

    I’m using WP2.9.1. with a lot of plugins and Apache/2.2.9 (Debian) PHP/5.2.6-1+lenny3

    I turned my php error logging “On”, so if anything shows up I’ll let you know next time. I get a feeling it’ll happen again.

    I’ve been having this problem for a while now. And our site was heavily Digg’d yeserday, nearly 100k pageviews in a few hours, I had foregone installing supercache because it was serving blank pages daily, multiple times per day. But because of the spike we needed it, once again it only took like 3-4 hours for blank pages to appear. Makes me sad we can’t seem to work it out or figure it out. Any resolution would be great! It worked this summer, but now, no dice… ;(

    dear diary,

    today blank page bug strikes again, no dashboard access
    other sites on the server work fine
    can’t find anything in the logs
    cant sleep 😉

    this time instead of restarting apache right away I cleared active_plugins field in the database wp_options table – it disabled all plugins so I can enable them back again – site works fine now

    for now I’m turning /etc/init.d/apache reload every 10 minutes – can’t think of anything else to do

    will keep you posted on php.log contents

    dear diary,

    before I start reloading apache from cron every 10 minutes I decided to try what he did:

    since I was migrating wordpress from a subdomain test site to my root domain, maybe the path change affected wp super cache plugin in some way…

    so I uninstalled the plugin and deleted all its traces, then installed it again and turned on the logging option (didn’t see it there before)

    current desperation level = Log level 5
    disabled e-mail notifications after 300 messages in 3 minutes
    enabled file logging

    will keep you posted

    dear diary,

    today blank page bug strikes yet again, same thing – had to restart apache – the last log message before going blank:
    Writing meta file: /www/wp-cache-xxxxxxxxxxxxxxx.meta

    from time to time I also get another fatal “error establishing a database connection” message for no apparent reason – have to restart mysql

    bugs come in pairs?

    They’re not related. Is your server running out of disk space?

    arekwolski – try the development version on the download page. That may help, especially if you have “coarse file locking” enabled (which I don’t advise any more)



    donncha, I have 67G of disk space free and “Coarse file locking” is disabled

    I’ll try the development version



    donncha, I just unintalled the 0.9.8 version according to your readme-instructions and and installed the “development version” downloaded from the bottom of this page – everything seems to work well so far

    in the readme.txt I can see Changelog info for 0.9.9 version and in the Changelog.txt the last modification is “2010-01-29 10:40 donncha” but WordPress installed-plugins-list says it’s a 0.9.8 version – is that all right? (I’m a bit paranoid, sorry)

    in the meantime I’d like to express how much we appreciate your work – thank you so much

    arekwolski – that’s fine. I can’t change the version info until the new version is ready. I think it’s 99.99999% there but I’m going to wait until next week before putting it out there.

    Thanks for trying the development version!



    unfortunately the problem persists

    here you can see blankpage-periods followed by apache restarts from cron repeating throughout the day:

    i switched wp-super-cache half-on, we’ll see how it goes from here



    wow, what a waste of time – installed the plugin then lost my site! Deleting the wp cache entry in the config file brought it back up.

Viewing 15 replies - 1 through 15 (of 28 total)
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