Please whitelist cPanel in your adblocker so that you’re able to see our version release promotions, thanks!

The Community Forums

Interact with an entire community of cPanel & WHM users!

Slow FTP Upload Speed

Discussion in 'Workarounds and Optimization' started by Eduardo Vieira, Feb 22, 2017.

  1. Eduardo Vieira

    Eduardo Vieira Registered

    Feb 22, 2017
    Likes Received:
    Trophy Points:
    cPanel Access Level:
    Root Administrator
    Hello, my problem is: I have a new VPS in Contabo, and everytime I start an upload the transfer speed starts at 2MB/s and then slows down to 80KB/s, my upload link is 50Mb/s. This issue occurs when I´m uploading a big file, it´s like there is some limit, I have also tested to upload 10 big files at the same time, all the files have been uploaded at 80Kb/s each at the same time. I also have tested this in another computers and another ISP, all the same, but there is something even stranger. This 80KB/s upload rate is only in windows, when i upload the same file in the same ISP from linux, the upload rate starts at the same 2MB/s then slows down to 500KB/s, and if i upload 10 files, the same thing happens, all the 10 files uploads at 500KB/s each.

    The download speed is ok, 10MB/s, this issue is only in uploads, even when i upload a file by the cpanel file manager this upload speed is limited to 80KB/s.

    I have tested pureftp and proftp, same problem on booth, i have tested uploads via ftp, sftp and scp, same problem, i have tested many ftp clients like: filezilla, cuteftp, winscp and coreftp. I have also tested with speedtest-cli in ssh, the results was: 100Mb/s download, 100Mb/s Upload.

    My first guess was that it´s a firewall problem, but no, i have turned off the firewall, no changes.

    I also have a reseller acocunt and a shared host in Hostgator, in booth of then the upload speed is about 5MB/s to 8MB/s

    I don´t know what to do anymore. I really aprreciate if someone could help me to find a solutions for this.

    Best regards.
  2. cPanelMichael

    cPanelMichael Technical Support Community Manager Staff Member

    Apr 11, 2011
    Likes Received:
    Trophy Points:
    cPanel Access Level:
    Root Administrator

    I recommend reaching out to your VPS hosting provider to determine if there's a firewall or router rule at the network level that's shaping the FTP upload speed.

    Thank you.
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice