ADSM-L

network data throughput

1999-10-27 03:36:56
Subject: network data throughput
From: "Van Ruler, Ruud R SSI-TSEA-332" <Ruud.R.vanRuler AT IS.SHELL DOT COM>
Date: Wed, 27 Oct 1999 09:36:56 +0200
ADSM guru's

Could someone explain me the real network data throughput (without
compression) of the a ADSM connection?

e.g.
18-10-1999 23:01:42   ANE4966I (Session: 327, Node: RIJSAP90)  Network data

                       transfer rate:        34,935.96 KB/sec

Please observe :

Our server is connected with a 100 Mb/s (Mega bit) connection. This is 100
Mb per sec!
Now since there are 8 bits in a Byte this means that the transfer rate of
the link is 100/8 = 12.5 MB/s (Byte)
Or  12,800.00 KByte (The multiplying factor for network data is 1024 instead
of 1000, but the link is based on 1000 so there are a few minor errors in
the computations.)

Now let's compare this theoretical maximum to reality shall we.

Theoretical maximum             12,800.00 KB/sec         43.9 GB/Hour
Practical reality                        10,000.00 KB/sec        34.3
GB/Hour
in our example                  34,935.96 KB/sec        119.9 GB/Hour

As you can see, the  values greatly exceed the theoretical maximum.
How is this possible?
or do we misinterpreted "Network data transfer rate: 34,935.96 KB/sec" ?

thanks in advance


=======================================================
             Ruud van Ruler
Shell Services International BV - TSEA-332
Our Data Storage Management home page: http://sww2.shell.com/dstorage/
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Email Internet: ruud.r.vanruler AT is.shell DOT com
                          r_van_ruler AT compuserve DOT com
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                                                            R.vanRuler
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