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Date:      Mon, 02 Jun 2003 08:58:29 -0700
From:      Terry Lambert <tlambert2@mindspring.com>
To:        damir@voljatel.si
Cc:        freebsd-performance@freebsd.org
Subject:   Re: copy 150G over 100Mbit
Message-ID:  <3EDB7425.95472506@mindspring.com>
References:  <200306021623.17927.damir@voljatel.si>

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Damir Horvat wrote:
> I need to copy ~150Gbytes over switched 100Mbit network to new machine (in max
> 7-8 hours).

The best you can expect is ((150 * 8 / 100) * 1024) / 60 = ~3.4 hours.

That assumes that your transfer rate off/on the disks on each
end can keep up with 100Mbit... which they can't.


> I've tryed rsync and cp over NFS. Both came down roughly to 2Gig's per hour,
> which is unacceptable. The only option left (as I see it) is to try with
> cross-over cable.

Your disk I/O will be your limiting factor, not your network
speed.

-- Terry



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