Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.3 alpha 4/15/85; site ucbvax.ARPA
Path: utzoo!watmath!clyde!cbosgd!ulysses!ucbvax!tcp-ip
From: tcp-ip@ucbvax.ARPA
Newsgroups: fa.tcp-ip
Subject: Re: ARPANET/MILNET performance statistics
Message-ID: <8445@ucbvax.ARPA>
Date: Mon, 24-Jun-85 18:15:16 EDT
Article-I.D.: ucbvax.8445
Posted: Mon Jun 24 18:15:16 1985
Date-Received: Tue, 25-Jun-85 03:36:47 EDT
Sender: daemon@ucbvax.ARPA
Organization: University of California at Berkeley
Lines: 39

From: Marianne Gardner 

Vint,

Sorry to take so long to answer your message.  My question was not with the
interpretation of the Dave's data, but with the fact that you only saw one
week's data.  I have been looking at throughput data for the mailbridges
every day for almost a year.  I saw a different picture.  In fact, the week
covered by Dave's data did show a rise in the proportion of traffic
going to MILISI.  Before that week MILARP, MILBBN, MILDCEC, and MILISI
all received about the same amount of traffic; MILLBL, MILSAC, and MILSRI
received less.  We saw MILISI receiving more than its share of traffic all
month, but last week the traffic distribution again looked even.  Such
fluctuations in traffic are common.  They are worth attention only when
they persist and cause problems.  

In any case, your memory increased the disparity in the traffic
distribution.  The weekly averages are given below.  The drop rates varied.
Sometimes they were as high as 4%, sometimes they were low.  We, at BBN,
are looking into this problem.

          DATAGRAMS RECEIVED PER SECOND, averaged over one week
                 
		6/2      6/8      6/16     6/23
    MILARP     7.21     6.59      5.95     6.17   
    MILBBN     9.09     9.82      8.71     9.02   
    MILDCE     7.62     8.24      7.12     8.79   
    MILISI     9.31    12.08     10.13     9.68   
    MILLBL     6.06     6.25      5.41     5.26   
    MILSAC     4.92     6.24      5.76     4.48   
    MILSRI     3.88     4.31      3.67     3.26   

Perhaps, the people at ISI, who were so good about admitting to their
penchant for cross-network ftping, will have an explanation for the extra
traffic last month.  Actually, the answer is more likely to come from
across the network, since the increase in MILISI's traffic was accompanied
by a drop in everyone else's traffic.

Marianne