Topic "Connection speed throttled using SFTP"

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[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: 24759
Location: Prague, Czechia
Please wait for WinSCP 4.1. If it does not help, let me know again.
Martin Prikryl

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