[unix-history] / usr / doc / unix / p6

.s1
9. Statistics
.es
The following numbers
are presented to suggest the scale of our operation.
Those of our users
not involved in document preparation
tend to use the system for
program development, especially language work.
There are few important
``applications'' programs.
.pg
Overall, we have
.pg
.ta .5i 1.25i
.ti 0
.nf
	100	user population
	14	maximum simultaneous users
	380	directories
	4800	files
	66300	512-byte secondary storage blocks used
.fi
.pg
There is a ``background'' process that
runs at the lowest possible priority; it is used
to soak up any idle \*sCPU\*n time.
It has been used to produce a million-digit
approximation to the constant \fIe\fR\(mi2,
and is now solving all rook-and-pawn vs. rook chess
endgames.
Not counting this background work, we average daily
.pg
.nf
.ti 0
	2400	commands
	5.5	\*sCPU\*n hours
	100	connect hours
	32	different users
	100	logins
.fi
.pg
.pg
.ti 0
.ft I
Acknowledgements.
.ft R
We are grateful to R.H. Canaday, L.L. Cherry,
and L.E. McMahon
for their contributions to
\*sUNIX\*n.
We are particularly appreciative
of the inventiveness,
thoughtful criticism,
and constant support of
R. Morris, M.D. McIlroy,
and J.F. Ossanna.
.pg
.pg
.ti 0
.ft B
References
.ft R
.br
.in 3
.ta 3
.nr r 0 1
.ti 0
\n+r.	Digital Equipment Corporation.
.ft I
\*sPDP\*n-11/40 Processor Handbook \fR(1972),
.ft R
.ft I
\*sPDP\*n-11/45 Processor Handbook \fR(1971),
.ft R
and
.ft I
\*sPDP\*n-11/70 Processor Handbook \fR(1975).
.br
.ti 0
\n+r.	Deutsch, L.P., and Lampson, B.W.
An online editor.
.ft I
Comm. ACM 10,
.ft R
12 (Dec. 1967),
793-799, 803.
.br
.ti 0
\n+r.	Richards, M.
\*sBCPL\*n: A tool for compiler writing
and system programming.
Proc. AFIPS 1969 SJCC, Vol. 34,
AFIPS Press, Montvale, N.J., pp. 557-566.
.br
.ti 0
\n+r.	McClure, R.M.
\*sTMG\*n\(emA syntax directed compiler.
Proc. ACM 20th Nat. Conf.,
ACM, 1965, New York,
pp. 262-274.
.br
.ti 0
\n+r.	Hall, A.D.
The M6 macroprocessor.
Computing Science Tech. Rep. #2,
Bell Telephone Laboratories,
1969.
.br
.ti 0
\n+r.	Ritchie, D.M.  C reference manual. Unpublished memorandum,
Bell Telephone Laboratories (1973).
.br
.ti 0
\n+r.	Aleph-null. Computer Recreations.
.ft I
Software Practice and Experience 1, \fR2
(Apr.-June 1971), 201-204.
.br
.ti 0
\n+r.	Deutch, L.P. and Lampson, B.W.
\*sSDS\*n 930 time-sharing system
preliminary reference manual.
Doc. 30.10.10, Project \*sGENIE\*n,
Univ. Cal. at Berkeley (Apr. 1965).
.br
.ti 0
\n+r.	Feiertag, R.J., and Organick, E.I.
The Multics input-output system.
Proc. Third Symposium on Operating Systems Principles.
Oct. 18-20, 1971,
ACM, New York, pp. 35-41.
.br
.ti 0
\n+r.	Bobrow, D.G., Burchfiel, J.D., Murphy, D.L., and
Tomlinson, R.S.
\*sTENEX\*n, a paged time sharing system for the \*sPDP\*n-10.
.ft I
Comm. ACM 15.,
.ft R
3 (March 1972) 135-143.
Commit	Line	Data
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.