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[Resolved] [Plugin: W3 Total Cache] Setting certain options generate blank pages

  • I just upgraded to 0.9.1 and now one of my pages is coming as blank.

    Playing with the settings, disabling HTML Minify fixes it. Curiously, if I close comments in the post, minify then works fine again.

    I was ready to declare this a Minify problem, but then I tried to enable the Debug options for the page, and that causes the blank page problem again (even with minify disabled).

    Unfortunately, my w3tc/log folder is also empty, so maybe I should take care of that problem first (but then I don’t know where to start). I’ve set full permissions in the folder, but still have no log files in there.

    For reference, the problematic page is:
    http://belezaesaude.dae.com.br/minoxidil/
    (I have minify and debug disabled now for the page to work).

    (all other pages on site appear to be working well, regardless of W3TC options)

    Any help is appreciated!

    ==
    Here’s my compatibility test results, for reference:

    PHP Version: 5.2.13
    PHP Timezone: Not set
    Web Server: Lite Speed
    FTP functions: OK (required for Self-hosted (FTP) CDN support)
    Multibyte String support: OK (required for Rackspace Cloud Files support)
    cURL extension: Not installed (required for Amazon S3 support)
    zlib extension: OK (required for compression support)
    Opcode cache: Not installed
    Memcache extension: Not installed
    Mime type detection: Not installed
    Hash function: hash (required for NetDNA purge support)
    Safe mode: Off
    Open basedir: Off
    zlib output compression: Off
    mod_mime: Not detected
    mod_expires: Not detected
    mod_deflate / mod_gzip: Not detected
    mod_headers: Not detected
    mod_env: Not detected
    mod_setenvif: Not detected
    mod_rewrite: Not detected
    WordPress Resources
    /home/lalala/public_html/.domains/belezaesaude.dae.com.br/wp-content: Write-able
    /home/lalala/public_html/.domains/belezaesaude.dae.com.br/.htaccess Write-able

    Uploads directory: Write-able
    WP_CACHE define: OK
    Fancy permalinks: OK
    Network mode: Off

Viewing 7 replies - 1 through 7 (of 7 total)
  • Just a little more info:

    – I’m only minifying HTML, not CSS or JS.
    – This is the heaviest page on the page, with more than 3000 comments (they’re in 50-comment pages, though).

    As I mentioned before, any piece of information that may help me (either on the blank page issue or on why the log files are not being generated) is very appreciated!

    After a lot of testing, I can say that most of what I mentioned above were red herrings. Here’s the updated info:

    After a while (I believe it’s 1h, the garbage collection time), that particular page (http://belezaesaude.dae.com.br/minoxidil/) starts being served as blank. It seems, then, that the problem is when the cached page gets replaced for the first time.

    What’s most strange is that it happens even I add the page in the list of pages not to cache (which is being respected, since I see “(request URI is rejected)” in the page’s source code).

    It seems the only way to make the problem go away is to disable the plugin as a whole (via the “Deselect this option to disable all caching functionality.” checkbox).

    I have no idea where to start looking for the solution, as I don’t have debug info or log files to check.

    Plugin Author Frederick Townes

    @fredericktownes

    Thanks Frederick.

    The issue persists (which forced me to fully disable the plugin), but I agree I need to find a way to have the logs first, otherwise this is close-to-impossible to troubleshoot.

    Thanks again!

    Plugin Author Frederick Townes

    @fredericktownes

    No problem, let me know if you’re willing to let me debug on your site.

    Thanks Frederick. I was about to set up the server for you to debug, when it occurred to me to try a memory change in wp-config. It worked:

    I changed from:
    define('WP_MEMORY_LIMIT', '64M');

    to

    define('WP_MEMORY_LIMIT', '128M');

    I guess that’s the price we pay for posts with 4,000 comments!

    Plugin Author Frederick Townes

    @fredericktownes

    Indeed. You can reduce memory usage by using a comments plugin like IntenseDebate by the way.

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