Strange memory behavior

  • I am managing WordPress sites on multiple servers. I have memory problems on one particular server and I am wondering why I don’t have them on the other one.

    I have installed WP System Health and WP-Memory-Usage to monitor the memory usage of the site.

    On two servers (lets call them 1 and 2), I have WordPress English installed, with a couple of plugins, and they take about 17-18MB of memory.

    On another server (lets call it 3), I have a WordPress French site installed, without any plugin but the ones to measure memory, and it takes 24MB.

    I thought that the problem was with the localization. However, I have also tried to install WordPress English on server 3, and it also takes 24MB of memory.

    Since the memory limit on server 3 is 32MB, this is pretty annoying since I can’t do much without running into problems.

    Now, servers 1 and 2 run with Linux 2.6.18, with PHP Version 5.1.6
    Server 3 runs with PHP 4.3.9 / 0Bit OS

    Can it be because of the version of PHP that the same, basic WordPress install takes 7MB more of memory ? Is there a way to deal with it ?

    P.S. : All versions of WordPress are 3.0.1.

    Thank you

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  • Moderator James Huff

    (@macmanx)

    Can it be because of the version of PHP that the same, basic WordPress install takes 7MB more of memory?

    PHP 4 does have a higher memory footprint than PHP 5.

    WordPress 3.2, due the first half of 2011, will require PHP 5.2 or higher, so I strongly recommend upgrading server 3.

    PHP 4 and MySQL 4 End of Life Announcement

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