Topic "Connection speed throttled using SFTP"

Author Message
[View user's profile]

Joined: 2008-01-22
Posts: 1
Location: CA
I am trying to figure out what is happening.

connecting to VSHELL server via DS3 (bandwidth not an issue)

using WinSCP 4.0.5 build 354 - AES cipher
I open 1 session max out 360KB/s
I open 5 concurrent sessions they each max out 360KB/s

using WinSCP 4.0.5 build 354 - Blowfish cipher
I open from 1 to 5 concurrent sessions they max out 1.2MB/s
but most of the time they settle at 760KB/s

using FileZilla w/Putty .60 and AES chiper
I can open 1 session and get 15MB/s
I can open 4 sessions and get 2.2MB/s

What is so different with the way WinSCP uses AES cipher? It isnt a physical system issue the CPU never goes over 50% and the NIC 75% with multiple sessions.

Let me know if there is more data you need.
[View user's profile]
Site Admin
Joined: 2002-12-10
Posts: 26858
Location: Prague, Czechia
Please wait for WinSCP 4.1. If it does not help, let me know again.
Martin Prikryl

You can post new topics in this forum


What is WinSCP?

It is award-winning SFTP client, SCP client, FTPS client and FTP client integrated into one software program for file transfer to FTP server or secure SFTP server. [More]

And it's free!


About donations

$9   $19   $49   $99

About donations


WinSCP Privacy Policy

WinSCP License