If I do the same thing on Windows, it pulls the file at 12mbps for 2 seconds, then drops way down to 2mbps or less. Be sure to run the test when your internet connection isn’t being used, as online activities like downloading large files can influence your speed test results. It can pull a file from my home ftp at 12mbps, my max upload speed. Here are a few steps to quickly and easily find out if you’re experiencing bandwidth throttling Step 1: Run a speed test Use our speed test to get an initial read on your internet speeds. I just ran Ubuntu live cd, and logged into the ftp server running at home. I'm comparing the two server tcp settings, and they look identical, so I can't figure out why it's capping me. I can download from both of them at 120mbps, but one of the servers caps my upload to it. If there were only a way to turn off autotuning and adjust tcp for best performance.īoth windows servers are in the same datacenter, with very similar routing, same ping times, same speeds. With autotuning off and fiddling with tcp window settings in the registry, that speed drops to 50mbps or less. With autotuning on, I can download from my win10 server at my max home speed 120mbps. However, I find my overall transfer speeds worse with autotuning off. So outbound speeds from the server suffer, and inbound speeds to the server still suffer.Ģnd server in the datacenter is running Windows 7.Īs I understand, 7 and 10 have autotuning. The http server goes from maxing out my 100mbps line, to <10mbps. If I disable auto-tuning, speeds are even worse. Whatever is working behind the scenes seems to be contributing to the server's slow download speed, and my slow upload from home. It starts at 10mbps, then quickly throttles. It seems the netsh settings are helping and hurting.Īlso, I have 10mbps upload speed at home, and when I try to upload to my 1gbps server, the speed is throttled at 1.5mbps. I know very little about how Windows controls transfer speeds, but I have read about Windows auto adjusting the tcp window and such. This is a dedicated server on a gigabit line.Īt home, my 100mbps line holds the download steady at 100mbps. !!!! It will sit at this superslow speed for a while, then climb up later, only to throttle down super slow again. It will start out at 20MB/s, then throttle down to just 200KB/s. Windows 10 appears to throttle internet speed.
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