CARNEGIE MELLON UNIVERSITY
COMPUTING SERVICES STATISTICS
FISCAL YEARS 1996 TO 2000

Change in Network Connections* 1996 1997 1998 1999 2000
Token Ring 594 0 0 0 0
Local Talk 2,167 1,583 0 0 0
Total Ethernet 6,905 9,821 13,382 15,414 13,282
Total Network Connections 9,666 11,404 13,382 15,414 13,282
Total Asynchronous Connections 9 0 0 0
TOTAL 9,675 11,404 13,382 15,414 13,282
*The number of network connections has decreased as a result of a recent purge of inactive connections.

Andrew Usage

 1996 1997 1998 1999 2000
Number of Andrew systems IDs 21,178 18,927 24,306 19,243 20,295
Average weekly authorized unique users 9,862 10,543 10,861    12,029    12,501
Peak weekly authorized unique users 11,659 12,793 13,062          14,562
Average weekly UNIX server logins 39,745 49,444 60,839     72,319  97,974
Peak weekly UNIX server logins 64,896 80,702 136,442  107,572  143,924
Average weekly UNIX unique user logins 4,011 4,404 4,905  5,528  6,050
Peak weekly  UNIX unique user logins 5,210 5,725 5,771  6,668  7,221
Average number of connected workstations 1,040 1,280 1,407 3,002          5,951
Peak number of connected workstations 1,312 1,592 2,007       4,239       7,440
Average total weekly PC server sessions 105,213 146,578 138,543     85,472    43,636
Peak total weekly PC server sessions 174,629 256,086 225,567  125,226  62,550
Average total weekly PC unique users 6,698 7,305 7,094  4,747  2,602
Peak total weekly PC unique users 8,446 8,978 9,129  6,986  3,851
Average Unique Weekly Cyrus Mail Users 176 726 2,939 5,802   8,244
Peak Unique Weekly Cyrus Mail Users 285 944 1,962  6,769  9,017
Average Total Sessions - Cyrus 1,887 222,146 328,758  728,377 1,274,433
Peak Total Sessions - Cyrus 9,728 106,811 648,527 1,224,647 2,115,592
Andrew Usage Notes: Cyrus was a pilot during academic year 1995-96.  1996 data based on sample period April 1996 - June 1996.

Computer Store Purchases (CPUs)

 1996 1997 1998 1999 2000
Students 205 203
Faculty 27 40
Staff 39 68
Non Departmental 271 311 607 1235 672
Departments 742 763 998 734 953
Others 0
TOTAL 1,284 1,385 1,605          1,969          1,625
Computers in Public Clusters 1996 1997 1998 1999 2000
Total Workstations 126 135 110 83 73
Total Macintosh 166 173 112 139 143
Total Windows 73 56 79 188 234
TOTAL 365 364 301 410 450