Re: scp stalled

Hi Francesco,

as you have not heared of it, it is unlikely that you use it. So I would 
go for an mtu check. What is 'ping -M do -s 1472 login.plx.cineca.it' 
saying, does it work?

Greets

Robert

Am 22.05.2014 08:53, schrieb Francesco Pietra:
> Hi Robert:
>
> francesco@tya64:~$ uname -r
> 3.2.0-4-amd64
> francesco@tya64:~$
>
>
> I do not understand "tunnel". I use classical scp, passwordless (my pub
> keys at the mainframe):
>
> francesco@tya64:~$ scp -p
> [email protected]:/gpfs/scratch/userexternal/fpietra0/P2f_accelMD_H2O_PLX/*30.dcd
> /home/francesco/PLX
>
>
> and "stalling" occurs randomly. I did not try with another box, where
> jelly is installed. Also, I did not try either from the Linux prompt
> (actually I us startx, followed by gnome-session. I am having those
> problems from the gnome terminal). I never had such problems from a
> French server at the Univ Picardie, but that automatically probalby uses
> ftp (and it has to be used from the graphical interface).
>
> Thanks
> francesco
>
>
>
> On Thu, May 22, 2014 at 8:00 AM, Robert Rottscholl <[email protected]
> <mailto:[email protected]>> wrote:
>
>     Hi Francesco,
>
>     what kernel version do you use? There is an unfixed (in mainline)
>     kernel bug in the tun device which might cause your problems (see
>     https://bugzilla.kernel.org/__show_bug.cgi?id=74051
>     <https://bugzilla.kernel.org/show_bug.cgi?id=74051> ). This will
>     only be a problem if you use a tunnel to connect to your server.
>
>     Greets
>
>     Robert
>
>     Am 21.05.2014 21 <tel:21.05.2014%2021>:16, schrieb Francesco Pietra:
>
>         Hello:
>         Since a few days, scp downloading 500MB file from a
>         supercomputer at the
>         Italian center CINECA results quite often in
>
>
>         francesco@tya64:~/PLX$ scp -p
>         [email protected]:/__gpfs/scratch/userexternal/__fpietra0/P3f_accelMD_H2O_PLX/*__29.dcd
>         /home/francesco/PLX
>         npt_accel-29.dcd                                3%   13MB
>         0.0KB/s -
>         stalled -
>
>
>         No problem with small files.
>
>         Check at CINECA resulted in no malfunction. The provider
>         (TELECOM ITALY)
>         says their adsl if percetly functioning. Actually, the speed, ca
>         600kb/s, is as expected (don't smile, Italy is at that speed; if
>         you pay
>         more, you can just hope to download at 1000kb/s, while out is always
>         impracticably slow).
>
>         My question is: can scp, as available from my installation on a
>         wheezy
>         amd64 box, be responsible?
>
>         thanks for advice
>
>         francesco pietra
>
>
>
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