What average memory usage can I expect with a simple WP site ?

  • We have a simple WP website, on a paid provider webhost.

    The website started in November. Since December we are monitoring memory usage. The provider’s max-memory limit is 48MB. Since December we are using 44MB-46MB constantly. We use 10 plugins, all of them fairly popular and standard. When I disable all 10 plugins, the memory usage drops 10MB to 36MB.

    So I rebuilt the website on my own PC. I use Xampp on Windows 7. I ftp-ed all files, and copied over a sqldump. The website looks and behaves exactly the same on my own PC. The difference is: the local website reports WP using only 26MB of memory, and 16MB without plugins. That means my provider’s webserver uses an extra 20MB !

    Anyone has an idea how this could happen ?

    Our provider says you can not compare Window and FreeBSD (their server). That might be true, but I don’t think it explains the huge difference of 36MB versus 16MB.

    I can see two explanations.
    1) There was a memory leak in one of the plugins we used earlier on. I’ve experimented a little with 2 different caching plugins. A good way to test this theory would be to restart our apache process. Unfortunately our provider does not give us that option through their control panel. Is there another way to force our process to fully restart (don’t think so). I don’t know much about memory-management of PHP or apache. Is this idea total nonsense ?
    2) The provider has linked their apache and/or php code statically, with extra libraries and features. This could bloat the executables and cause extra memory usage. I’m still waiting for an answer from my provider.

    So basically the question is: what memory usage can I expect from a simple WP website with no plugins ? How do I examine memory-leaks ? Can I restart my whole process ? Are there different versions of apache and php that use a lot more memory than other versions ?

    Thanks in advance,
    Gryz.

    —
    Btw, our website (in Dutch) is here: https://www.aziatische-ingredienten.nl/
    We use an english translation plugin too: https://www.aziatische-ingredienten.nl/en/

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  • Thread Starter Gryz

    (@gryz)

    So nobody can tell me what memory consumption to expect on a standard WP installation with the TwentyTen theme ?

    I can tell you this much, I have a rather large site (you do realize it depends on the number of entries in the DB as well as, concurrent cgi-processes) using Windows Server 2008 R-2 with two MySQL servers running, one is in conjunction with ZEND CE, the other is stand alone.

    Both DB’s fluctuate however, they usually run around 100k to 200k depending on how busy the site gets…

    Overall, I have 4 gigs with 4 Xeon cores, and utilize around 1.6 gigs to keep the whole thing alive… (I do run multiple sites, separate installations)

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