>
> ------------------------------
>
> Message: 3
> Date: Wed, 26 Mar 2008 16:36:25 -0600
> From: "Gary W. Zuker" <email@hidden>
> Subject: Re: SMB vs AFP performance
> To: email@hidden
> Message-ID: <p0624086cc410780d191e@[128.83.207.100]>
> Content-Type: text/plain; charset="us-ascii" ; format="flowed"
>
>>> One of the things I found was that copying a large amount of data
>>> from the server volume to the Mac was significantly faster using
>>> SMB than using AFP. For a 500MB folder with 5 big files, AFP was
>>> getting around 36 Mbps, whereas SMB was getting around 50 Mbps.
>
> --- I found just the opposite. I just did a quick unscientific
> experiment. On my desktop mac (10.4.11 late G5 tower, gigabit
> ethernet) I mounted the same server volume twice. The AFP mount was
> specified as "afp://servername" and the SMB mount as "SMB://
> servername". Then I did a finder drag of a 1GB file to each server
> volume. The server is the same , just different protocols (dual G4
> Xserve, 10.4.11 on gigabit ether with an Xraid for the share).
>
> The transfer times for AFP were just slightly, though consistently,
> faster. 21 seconds for AFP and 25 seconds for SMB , for a 1GB audio
> file.
>
SNIP
> Gary W. Zuker
> Senior Systems Analyst
> Department of Psychology
> University of Texas at Austin
> __________________________________
>
Greetings -
Throughput variance is a very interesting thing - window size,
retransmissions, acks, and more. The fun never ends.
This, of course, sounds like a perfect opportunity to use Wireshark, create
baselines, observe differences, do some science, and experiment with the
advanced expert info, statistics and graphing features. I'd love to hear
your results.
"It is a capital mistake to theorize in advance of the facts." S. Holmes
"Murder In Westminster"
Will I be seeing any of you at SharkFest next week?
Refs: www.wireshark.org www.packet-level.com
Laura's Lab Kit 9 just released - always have lots of good traces to learn
from -
http://www.novell.com/connectionmagazine/laurachappell.html
Best regards,
John Gonder
Las Positas College Cisco Networking Academy
Computer Networking Technologies
email@hidden
925.424.1000
Web Home: http://lpc1.clpccd.cc.ca.us/lpc/jgonder
Online Calendar: http://ical.mac.com/jgonder/GonderLPC
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