I'm trying to explain this as simple but documented as possible. This is not exclusive to this server or my current ISP. I've seen the same exact issue over the years while being with different ISPs and having my servers with different providers (GoDaddy in USA, iWeb and GloboTech on Canada). Regina Belle Discography Rar. The only thing it's been common is the Windows Server OS (2003 and 2008 r2). But let's look for now at my current server and my current ISP only. The problem: I get very slow transfer rates between my local workstation and my remote dedicated server.

My server is on a 100 Mbps port and my local workstation is on a 50 Mbps symetric connection over optical fiber. Tell Me More German V9 Rapidshare on this page. Symptoms: Both the server and the workstation get excellent results (very close to their connection speeds) when doing tests on speedtest.net against different servers and locations over the US and Mexico. If I download big files from, let's say, Dropbox, to either my server or my workstation, I get transfer rates of 10 MBps and 5 MBps respectively on a single connection, which is correct according to each connection speed of 100 Mbps and 50 Mbps repectively. Yet, If I transfer a file from my server (via HTTP or FTP) to my workstation, I don't get even close to the 50 Mbps speed I should get (5 MBps transfer rate) but I get instead something equivalent to 3 Mbps (300 KBps transfer rate).

I'm trying to understand why I get a transfer rate that slow. I'm not sure on how to debug it.

Whenever I raise a ticket on the problem with the hosting providers, they ask me for tracert outputs and finally just blame it on some server in the middle. But that doesn't seem to be correct, if we take in consideration what I said at first: I've seen this exact speed/problem while having my servers with GoDaddy, iWeb and GloboTech, and while being myself with different ISPs on very different types of Internet service. It really looks like a fixed setting somewhere in the server area. Tests I've done: SPEEDTEST These are speed tests from speedtest.net that were executed in my dedicated server against different remote servers including a server in my ISP's datacenter in Mexico City: Canada: 94.64 Mbps for download and 94.87 for upload San Jose, CA: 93.58 Mbps for download and 95.48 Mbps for upload Mexico City (server in my own ISP's datacanter): 92.99 Mbps for download and 95.39 Mbps for upload If I run those tests against the same servers from my local workstation, I get speeds close to my 50 Mbps connection too. TRACERT This is a recent tracert output executed from my workstation to my dedicated server: 1. The bottleneck I see when accessing that URL is clearly due to the window size. When I try to download from your server I get 555KB/s.

Open Source UDP File Transfer Tool. There’s a clear tradeoff between the two when it comes to speed versus. UDP is quickly becoming the file transfer tool of. File transfer using C#.NET by using TCP Socket; Author: SumanBiswas; Updated: 27 Feb 2009; Section: C#; Chapter: Languages; Updated: 27 Feb 2009. Although both SCP and SFTP use the same SSH encryption during file transfer, the file transfer speed of SFTP is. File transfer can be. Secure Socket Shell, is a.

I have a roundtrip time of 108ms. Doing the math I get the following window size: 555KB/s * 108ms = 59.94KB.

As long as I do it from a host in a datacenter, I get a very consistent throughput and roundtrip. Additionally, if I start two downloads in parallel each get 555KB/s.

That is exactly the symptoms you will see when the bottleneck is the window size. Without window scaling, the window cannot be any larger than 64KB. But I do see window scaling be negotiated, so higher throughput should be possible. This leaves two hypotheses to investigate: • Something is mangling the window scaling option on the path from the client to the server making the server think the window is scaled by a factor of 1.

• The server may be configured to never use more than 60KB send window on each connection. The first is easy to verify if you can perform a packet capture on the server. Just look at the scaling option on incoming SYN packets to find out if a scaling factor higher than one is received by the server. I can recommend using Wireshark for analyzing the traffic. Verifying the second hypothesis requires some knowledge of the operating system you are using.