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What can cause HTTPS to be slow?

Discussion in 'General Discussion' started by madmac, Feb 27, 2004.

  1. madmac

    madmac Well-Known Member

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    HTTP is really fast, but HTTPS is noticeably much slower on my server, at least for me. When I set it up, I hired a guy to do some tweaking and asked him to look at it, but he said he couldn't find anything in the system that would make HTTPS really slow.

    Is this a data-center issue? Maybe a problem with my ISP?
     
    #1 madmac, Feb 27, 2004
  2. Godcore

    Godcore Active Member

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    HTTPS is encrypted. If your server is running a heavy load it may take noticeably longer... just an idea.
     
    #2 Godcore, Feb 29, 2004
  3. bamasbest

    bamasbest Well-Known Member

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    As well, you can go to www.modssl.org and they can provide a bit more info.

    Regardless, each request requires checking security/keys on both ends, ergo, SSL/https will normally take more time to show a visual response.
     
    #3 bamasbest, Feb 29, 2004
  4. madmac

    madmac Well-Known Member

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    Our server is running hardly any load at all
     
    #4 madmac, Feb 29, 2004
  5. madmac

    madmac Well-Known Member

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    hmm... the past few days SSL seems to be causing a heavy load. for the past few hours CPU has been 99% usage by this process:

    /usr/local/apache/bin/httpd-DSSL

    looking at my mailscanner charts over the past few days (which records current CPU usage), there have recently been a few times when the CPU was at 99% for a few hours with a high load. Also the `CPU/Memory/MySQL Usage` in WHM shows 3 occurances of `/usr/local/apache/bin/httpd -DSSL` using greater than 50% CPU.
     
    #5 madmac, Mar 3, 2004
  6. madmac

    madmac Well-Known Member

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    also right now there are a ton of `/usr/local/apache/bin/httpd -DSSL` processes running and not nearly that many users on the system... seems maybe SSL is running away for some reason?
     
    #6 madmac, Mar 3, 2004
  7. madmac

    madmac Well-Known Member

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    well looking back over the logs, about the time apache began to spin widely out of control is when I installed Turck MMcache.

    I disabled it, and so far the problem has not come back. I am keeping an eye on it though.
     
    #7 madmac, Mar 4, 2004
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