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Whenever server load over 1.0, PM, editing, and posting takes 30 sec-1 minute before response

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  • Whenever server load over 1.0, PM, editing, and posting takes 30 sec-1 minute before response

    Whenever VPS server load is below 1 and there aren't many users, the forum works fine. As soon as it gets around 1 (sometimes the site is around 2-3 during peak times), entering/viewing PMs, posting replies or new messages becomes very laggy. The page loading will appear for 30 sec-1 minute when it's bad before it reponds. Viewing threads and static pages hosted on the same server are much faster.

    Occasionally I've gotten error 502, don't know if it's related.

    Running apache w/nginx reverse proxy to serve static files and speed things up.

    Memory is usually around 30% used.

    What is causing this problem and how do I fix it?

  • #2
    You need to check nginx's error_log file, the 502 gateway error would be logged there.

    It could be nginx or apache causing the issue, so start there.
    Gentoo Geek

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