Find What is Limiting Bandwidth

[dankoni]

Hey all,
I am running WHM/cPanel on an Amazon EC2 CentOS instance. My download and upload speeds seem to be limited to around 150kb/sec on http and ftp. However, when I test the server's bandwidth from the command line using speedtest_cli.py, everything is fine:
Hosted by RPM WEB SERVICES (Ashburn, VA) [0.03 km]: 12.636 ms
Testing download speed........................................
Download: 925.52 Mbits/s
Testing upload speed..................................................
Upload: 279.72 Mbits/s

What can I do to find out what is limiting my bandwidth? Currently no firewall in place. I have Ruby/Rails/Passenger installed. This bandwidth limit seems to have started around when I set those up for Redmine.

I also recently migrated a few account from our old Plesk server. Is it possible the migration is to blame? Seems unlikely, but I wanted to post what was happening on the server when this bandwidth issue first occurred.


Any ideas and/or help is much appreciated.
Thank you!

 

[cPanelMichael]

Hello

You may want to check with your data center to see if there are any traffic filtering rules in place, or to see if they can help diagnose the speed issue. Also, check your resolvers in /etc/resolv.conf to see if using alternate ones (e.g. 8.8.8.8) make any difference.

Thank you.