Re: Reverse port forward channel performance

[Aris Adamantiadis <aris@xxxxxxxxxxxx>]

Hi Gearoid,

It's possible that channel windows are not initialized the same way in 
forward and reverse forwarding. This could result in bad performances 
if the window is too small.

I'll check if I can find anything.

Aris

Le 27/01/12 18:16, Gearoid Murphy a écrit :
> Hi,
>
> We've been observing poor throughput (230KB/s) on libssh channels
> generated from reverse port forwarding (ssh_forward_accept) via an
> OpenSSH server.
>
> Conversely, when using a channel generated through a normal port
> forwarding call (ssh_channel_open_forward), we observe far greater
> throughput (8MB/s).
>
> Has anyone observed or experienced similar issues?, is there some
> configuration aspect of the channel setup which needs to be modified?
>
> libssh 0.5.2-1
> Linux 3.0.0-15-generic x86_64 x86_64 x86_64 GNU/Linux
> openssh-server 1:5.8p1
>
> Thanks
> - Gearoid