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Date: Thu, 01 Apr 2010 18:17:57 +0200
From: Matthias Andree <matthias DOT andree AT gmx DOT de>
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To: cygwin AT cygwin DOT com
Subject: Re: scp no longer reports incremental progress
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Am 01.04.2010 16:43, schrieb Christopher Faylor:
> On Thu, Apr 01, 2010 at 02:00:42PM +0300, Matthias Andree wrote:
>>Christopher Faylor wrote on 2010-03-31:
>>
>>> On Mon, Mar 29, 2010 at 06:14:39PM -0400, Christopher Faylor wrote:
>>>> On Mon, Mar 29, 2010 at 06:12:53PM -0400, Charles Wilson wrote:
>>>>> On 3/29/2010 6:09 PM, Jim Reisert AD1C wrote:
>>>>>> I am running the latest Cygwin (1.7.2) and ssh.
>>>>>>
>>>>>> I notice that scp (from local to remote host) no longer shows an
>>>>>> incremental progress bar.  It just reports 100% completion
>>>>>> immediately, then I have to wait until the copy is actually done.
>>>>>
>>>>>> Sink: C0644 11015296 dx4wawd.zip
>>>>>> dx4wawd.zip
>>>>>>                100%   11MB  10.5MB/s   00:00
>>>>>
>>>>> Hmm...same behavior here.  Didn't we see this behavior before, about a
>>>>> year ago?  I think what fixed it back then was some cgf magic in the
>>>>> socket fhandler innards.
>>>>>
>>>>> Uh-oh. One of the changes between 1.7.1 and 1.7.2 was more socket work.
>>>>
>>>> Actually, I think it was pipe related.
>>>
>>> And, it was.  I removed what I thought was an stupid function.  As it
>>> turns out the function was needed but it just wasn't working quite
>>> right.
>>>
>>> Today's snapshot, uploaded a few minutes ago, should fix the problem.
>>
>>Euh, 20100331 seems to introduce regressions for me compared to 20100328.
>>scp now seems broken for me,
>>
>>$ scp -vvvvv somefile user AT example DOT org:/tmp/
>>Executing: program /usr/bin/ssh host example.org, user user, command scp  
>>-v -t -- /tmp/
>>
>>and often just hangs there, while PuTTY's pscp and interactive ssh to the  
>>same host + login works just fine, and also if I'm using the 20100328  
>>snapshot.
>>
>>With gdb attached, it succeeds once in a while.
> 
> How big is "somefile" and where is "example.org"?  Is it a local
> machine?  In another country/state/continent?  What kind of system is
> it?

As written to Corinna, 32-bit i686 openSUSE 11.2 Linux fully patched with
preinstalled openSSH 5.2.

Few MB, or 1.X MB. example.org is behind an ADSL line which is ~12 Mbit/s in the
direction where I'm trying to copy and ~0.6 Mbit/s in the opposite direction.
Note that with 20100328 I sort of "immediately" get the SSH debug trace, whereas
there is no output at all with 20100331. (on Windows 7 Professional 32-bit
German which itself sits on a 100 Mbit/s firehose). 12 hops, 48 ms (the first 10
hops take 7 ms, 11 hops 14 ms, then the typical DSL interleaving on the last hop).

-- 
Matthias Andree

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