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October 19, 2000
Jeff Fink asked me to do some download statistics on ground.ecn.uiowa.edu.
This report summarizes _only_ FTP downloads (not http access).
I have run some summary stats for file downloads from ground 1996-2000.
This turned into a challenge which I couldn't resist conquering. I have
created a Top100 list (actually top 107 since I'm using all files
downloaded 300 or more times). Some stats are a little misleading since a
multipart file (ie some binscii files) is counted once for each part. The
Top100 file is available on ground in the main apple2 directory. It is
also posted as a separate message on csa2.
Challenges: FTP log files 1996 6,254,776 bytes 83506 records
1997 35,007,752 bytes 442134 records
1998 56,929,482 bytes 688684 records
1999 39,239,234 bytes 456728 records
2000 76,906,213 bytes 859367 records
Processing time with SAS 6.12 on HP B132L workstation: 36 minutes
I eliminated 'duplicates' (file downloaded more than once on a given
machineID) and a few files (name <4 chars (files in the lost+found)) or
any of the 'FILE.LIST' files.
Top 107 list of file downloads from ground Feb 1996 - Sep 2000
Ground Usage - FTP downloads
Filename 1996 1997 1998 1999 2000 Total
index.html 12 176 138 94 199 619
aboutdivdos.txt . 190 139 85 145 559
ARCHIVE.SUFFIX.INFO.txt . 170 177 88 116 551
spyhunter.1of3 17 208 141 91 94 551
...
Lambda.txt 21 102 68 43 67 301
ProTYPE11.hqx . 69 71 65 96 301
text.adventures 49 60 64 51 76 300
Total downloads 72830 381949 478553 406191 740070 2079593
Total filenames = 32978
As you can see from the Top100 file, over 2 million file downloads have
occurred in the past 5 years. In the first 9 months of this year over 740
thousand downloads have occurred. We may reach 1 million downloads for
the year 2000 by the end of December. (That is on average over 2700
files/day!)
A complete list of the 32978 files in the summary is 600 pages, single
spaced. (Only 2,785,445 bytes.)
Determining the number of users who have downloaded files from the ground
archives is nearly impossible. The FTP logs contain 'machine id' instead
of userid or login names. There are over 27000 unique machine IDs. But
many of these represent (bogus) generated IDs. There are thousands of IDs
that begin with [cisco,cvx,dial,du,host,ip,kmm,pm,port,ppp,proxy,oct,
remote,rock,slip,sf,tc,tp,ts,user] to name a few. AOL represents another
situation because most aol users are identified as xxxxxxxx.ipt.aol.com
(where xxxxxxxx is a RANDOM alphanumeric string not attached to a
particular user).
So instead of users, I tried to identify 'sites' by stripping off the
leading level of each machid (ie all chars up to and including the first
'.', except when the machid was a IP number (www.xxx.yyy.zzz). Thus all
AOL users were reduced to one site. Same for ppp logins from particular
service provider, etc. This reduced the unique 'sites' to 13560. Still,
4265 'sites' had downloaded only one file. So only 9295 sites have
downloaded more than one file. 4382 sites have only downloaded between 2
and 5 files, thus 4913 sites have downloaded 6 of more files. 3584 sites
have downloaded 10 of more files. 61 sites have downloaded over 10,000
files apiece. 25 sites have downloaded over 20,000 files.
Given that some 'sites' represent more than 1 user, and assuming only
those 'sites' with 6 or more downloads represent an active apple2 user,
I estimate the number of apple2 users who have actively used
ground.ecn.uiowa.edu to be over 5000 from all over the world.
A complete list of the 13560 sites in the summary is 247 pages, single
spaced. (Only 1,145,520 bytes.) The top100 list would include sites which
have downloaded 5340 or more files. I would consider most of sites as
private mirrors of (parts of) ground.ecn
Site Rank 1996 1997 1998 1999 2000 Total
ex-pressnet.com 1 . . . 21513 13878 35391
dialnet.net 2 23 30416 4373 . . 34812
omah.uswest.net 3 . . . 193 33411 33604
...
idx.com.au 99 . 5411 . 1 . 5412
deltasoft.com 100 . . 5340 . . 5340
...
==== ==== ==== ==== ==== ====
N = 13560 72830 381949 478553 406191 740088 2079611
I believe these statistics demonstrate that ground.ecn.uiowa.edu continues
to be one of the premier apple2 sites for a world-wide group of users.
Thank you to Jeff Fink (author of Silvern Castle adventure game) for
nudging me into this project. And a special thank you to apple2 users
world-side for supporting ground.ecn.uiowa.edu
--Steve