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Date: Tue, 14 Dec 2004 12:37:09 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Limitation in SCP?
Message-ID: <20041214113709.GH22056@cygbert.vinschen.de>
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References: <20041213143745 DOT 28b476b5 AT boing DOT blorch DOT org>
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On Dec 13 14:37, Bob Smart wrote:
> I've discovered that in some circumstances, scp seems to get tired early when transferring a largish file (around 200MB).  It copies diligently for the first 20-40MB (exactly where it stops varies from run to run), then CPU usage drops to zero, the file stops growing on the receiving end, there's no apparent network traffic, and everything just pretty much halts.  A ps shows the scp task running, but not doing anything.
> 
> I've only seen this when copying between two W2K machines (both Cygwin, both using the Cygwin SSH package, both of pretty recent vintage with DLL 1.5.11).  I did my development testing between Linux and NT, and I never saw this behavior in that environment.  It always fails with the W2K machines.
> 
> I also never see this happen with tar.  If I do a tar-to-tar pipe via SSH, everything works even in the W2K-to-W2K environment.  However, I'd like to understand why I can't use scp for this.

Hmm, that doesn't happen for me.  I tried to copy around a 200 Megs file
between WinXP and XP<->Linux multiple times and don't see any hang.  Did
you try with Cygwin 1.5.12, too?


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          mailto:cygwin AT cygwin DOT com
Red Hat, Inc.

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