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cPanel Server - Slow Network Speed

Discussion in 'General Discussion' started by fidividi, May 24, 2014.

  1. fidividi

    fidividi Active Member

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    Hello,

    We are running below machine:
    CLOUDLINUX 6.5 x86_64 standard – HOSTNAME WHM 11.42.1 (build 16)

    Our datacenter is Hetzner.

    Throughout all the tests we performed, we thought the issue is with datacenter. So we reported the low speed to Hetzner, they claimed there's no limit, so they asked us to take our machine down in their rescue mode linux environment, and we provided them couple of links that we were experiencing extremely low speed (max: 3~5mbit/s), they tested the speed on our server, with no changes to the network configuration, but just in different environment than cPanel, and below is the result provided to us:


    As I mentioned above, we are running cPanel with CloudLinux. I am not aware of any limitation/configuration where we can have such control over cPanel download/upload network speed, and same applied for CloudLinux.

    What could the issue be?

    We have noticed the speed can not max out more than 5mbit/second. Slow enough that account transfers never finish...

    I appreciate any help!

    Thank you.
     
  2. JayFromEpic

    JayFromEpic Well-Known Member

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    The slow connection speed could be caused from a dozen of different causes. The server would need to be reviewed by a System Engineer capable of diagnosing network device/driver errors.
     
  3. dalem

    dalem Well-Known Member
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    your testing is not consistent
    you comparing a local download to remote

    I get the same speeds from Linode 22.0M/s
    From our servers in Las Vegas
    so I don't think you have speed issue
     
  4. fidividi

    fidividi Active Member

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    I don't think you read my post in detail.

    My issue is, basically in rescue mode, our server downloaded from Linode on average 2.94 MB/s, in cPanel/CloudLinux operating system, it can only reach 3~4mb/s, for the same exact file, almost within the same time-frame. There is almost 7~8 times difference...

    This obviously tells me something is wrong with the setup, as our machine was able to download faster, much faster, while not in cPanel/CloudLinux environment.
     
  5. dalem

    dalem Well-Known Member
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  6. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello :)

    Yes, I suggest making sure there are no firewall rules that could be limiting traffic. You are also welcome to open a support ticket so we can take a closer look and rule out any involvement with the cPanel/WHM software.

    Thank you.
     
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