Slow network issue

[aast]

Thank you for your suggestions.

I have experimented the speed with different network speed testing tools. On each test the downloading speed on centos is comparatively better than windows. However still the downloading a 1GB file is too fast on windows. Do you know why the downloading through wget/curl is too slow when we test it after switching the sender server OS to centos.

Downloading the same file from the source server after switch its OS to centos

root@cpanel[~]# curl -o /dev/null http://server1.com/1000mb.txt
% Total % Received % Xferd verage Speed Time Time Time Current Dload Upload
Total Spent Left Speed
100 1024M 100 1024M 0 0 50.2M 0 0:00:20 0:00:20 --:--:-- 55.4M

Downloading the same file on the same destination server after switching the source server OS to windows

root@cpanel[~]# curl -o /dev/null http://server1.com/1000mb.txt
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 1024M 100 1024M 0 0 67.1M 0 0:00:15 0:00:15 --:--:-- 76.6M