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X-Authentication-Warning: slinky.cs.nyu.edu: pechtcha owned process doing -bs
Date: Sat, 27 Sep 2003 14:22:34 -0400 (EDT)
From: Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: Andrew DeFaria <ADeFaria AT Salira DOT com>
cc: cygwin AT cygwin DOT com
Subject: Re: ftp way quicker than cp?
In-Reply-To: <bl4k23$69n$1@sea.gmane.org>
Message-ID: <Pine.GSO.4.56.0309271419430.3193@slinky.cs.nyu.edu>
References: <bl4k23$69n$1 AT sea DOT gmane DOT org>
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On Sat, 27 Sep 2003, Andrew DeFaria wrote:

> Ftp is orders of magnitude quicker than cp. Here's the situation.
>
> File to copy: 25 Meg.
>  From location: Santa Clara, USA.
> To location: Shanghai, China
> Network connection: Not really sure but both Santa Clara and Shanghai
> are in the same NT domain.
>
> I tried the following:
>
> $ time ncftpput sons-cc Release 2.2.0.7.images.tar.gz
> 2.2.0.7.images.tar.gz:                                  25.99 MB   81.70
> kB/s
>
> real    5m34.187s
> user    0m0.327s
> sys     0m1.124s
> $ time cp 2.2.0.7.images.tar.gz //sons-shanghai/users/ftp/release
>
> real    133m39.290s
> user    0m1.186s
> sys     0m7.406s
>
> Why such a huge difference! Had I thought that such a huge difference
> would have occurred I would have switched to ftp long ago!

You are not really measuring the time needed for "cp".  You are measuring
the overhead of SMB share access.  Using ftp bypasses all this mechanism
completely, and sends files directly over the network.  Try comparing the
time it takes to copy the file in Windows Explorer to the SMB share and to
an FTP location -- you'll probably see the same results.

IOW, this is not really Cygwin-related.
	Igor
-- 
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