Commit | Line | Data |
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9ddf7a71 DR |
1 | .s1 |
2 | 9. Statistics | |
3 | .es | |
4 | The following numbers | |
5 | are presented to suggest the scale of our operation. | |
6 | Those of our users | |
7 | not involved in document preparation | |
8 | tend to use the system for | |
9 | program development, especially language work. | |
10 | There are few important | |
11 | ``applications'' programs. | |
12 | .pg | |
13 | Overall, we have | |
14 | .pg | |
15 | .ta .5i 1.25i | |
16 | .ti 0 | |
17 | .nf | |
18 | 100 user population | |
19 | 14 maximum simultaneous users | |
20 | 380 directories | |
21 | 4800 files | |
22 | 66300 512-byte secondary storage blocks used | |
23 | .fi | |
24 | .pg | |
25 | There is a ``background'' process that | |
26 | runs at the lowest possible priority; it is used | |
27 | to soak up any idle \*sCPU\*n time. | |
28 | It has been used to produce a million-digit | |
29 | approximation to the constant \fIe\fR\(mi2, | |
30 | and is now solving all rook-and-pawn vs. rook chess | |
31 | endgames. | |
32 | Not counting this background work, we average daily | |
33 | .pg | |
34 | .nf | |
35 | .ti 0 | |
36 | 2400 commands | |
37 | 5.5 \*sCPU\*n hours | |
38 | 100 connect hours | |
39 | 32 different users | |
40 | 100 logins | |
41 | .fi | |
42 | .pg | |
43 | .pg | |
44 | .ti 0 | |
45 | .ft I | |
46 | Acknowledgements. | |
47 | .ft R | |
48 | We are grateful to R.H. Canaday, L.L. Cherry, | |
49 | and L.E. McMahon | |
50 | for their contributions to | |
51 | \*sUNIX\*n. | |
52 | We are particularly appreciative | |
53 | of the inventiveness, | |
54 | thoughtful criticism, | |
55 | and constant support of | |
56 | R. Morris, M.D. McIlroy, | |
57 | and J.F. Ossanna. | |
58 | .pg | |
59 | .pg | |
60 | .ti 0 | |
61 | .ft B | |
62 | References | |
63 | .ft R | |
64 | .br | |
65 | .in 3 | |
66 | .ta 3 | |
67 | .nr r 0 1 | |
68 | .ti 0 | |
69 | \n+r. Digital Equipment Corporation. | |
70 | .ft I | |
71 | \*sPDP\*n-11/40 Processor Handbook \fR(1972), | |
72 | .ft R | |
73 | .ft I | |
74 | \*sPDP\*n-11/45 Processor Handbook \fR(1971), | |
75 | .ft R | |
76 | and | |
77 | .ft I | |
78 | \*sPDP\*n-11/70 Processor Handbook \fR(1975). | |
79 | .br | |
80 | .ti 0 | |
81 | \n+r. Deutsch, L.P., and Lampson, B.W. | |
82 | An online editor. | |
83 | .ft I | |
84 | Comm. ACM 10, | |
85 | .ft R | |
86 | 12 (Dec. 1967), | |
87 | 793-799, 803. | |
88 | .br | |
89 | .ti 0 | |
90 | \n+r. Richards, M. | |
91 | \*sBCPL\*n: A tool for compiler writing | |
92 | and system programming. | |
93 | Proc. AFIPS 1969 SJCC, Vol. 34, | |
94 | AFIPS Press, Montvale, N.J., pp. 557-566. | |
95 | .br | |
96 | .ti 0 | |
97 | \n+r. McClure, R.M. | |
98 | \*sTMG\*n\(emA syntax directed compiler. | |
99 | Proc. ACM 20th Nat. Conf., | |
100 | ACM, 1965, New York, | |
101 | pp. 262-274. | |
102 | .br | |
103 | .ti 0 | |
104 | \n+r. Hall, A.D. | |
105 | The M6 macroprocessor. | |
106 | Computing Science Tech. Rep. #2, | |
107 | Bell Telephone Laboratories, | |
108 | 1969. | |
109 | .br | |
110 | .ti 0 | |
111 | \n+r. Ritchie, D.M. C reference manual. Unpublished memorandum, | |
112 | Bell Telephone Laboratories (1973). | |
113 | .br | |
114 | .ti 0 | |
115 | \n+r. Aleph-null. Computer Recreations. | |
116 | .ft I | |
117 | Software Practice and Experience 1, \fR2 | |
118 | (Apr.-June 1971), 201-204. | |
119 | .br | |
120 | .ti 0 | |
121 | \n+r. Deutch, L.P. and Lampson, B.W. | |
122 | \*sSDS\*n 930 time-sharing system | |
123 | preliminary reference manual. | |
124 | Doc. 30.10.10, Project \*sGENIE\*n, | |
125 | Univ. Cal. at Berkeley (Apr. 1965). | |
126 | .br | |
127 | .ti 0 | |
128 | \n+r. Feiertag, R.J., and Organick, E.I. | |
129 | The Multics input-output system. | |
130 | Proc. Third Symposium on Operating Systems Principles. | |
131 | Oct. 18-20, 1971, | |
132 | ACM, New York, pp. 35-41. | |
133 | .br | |
134 | .ti 0 | |
135 | \n+r. Bobrow, D.G., Burchfiel, J.D., Murphy, D.L., and | |
136 | Tomlinson, R.S. | |
137 | \*sTENEX\*n, a paged time sharing system for the \*sPDP\*n-10. | |
138 | .ft I | |
139 | Comm. ACM 15., | |
140 | .ft R | |
141 | 3 (March 1972) 135-143. |