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File Number GENt - 33
Form C24-3038-0
Systems Reference Library
Comparison of Sort 2-Versi(Jn 2 Timing
IBM 1401 Elnd IBM 1460 Data Processing Systems
This pubLication contains 72 sort timing comparison
tables of the Sort 2 - Version 2 program run on an
IBM 1401 Data Processin~~ System and an IBM 1460
Data Processing System.
This program, when used with a 1460 system,
results in an appreciable savings in sort run tilne.
The various parameters involved are expla.ined
in the introduction of the publication.
@ 1963 by International Business Machines Corporation
COMPARISON OF SORT 2-VERSION 2 TIMING - IBM 1401 AND IBM 1460 DATA PROCESSING SYSTEMS
With the announcement by IBM of the IBM 1460 Data
Processing System, an appreciable savings in sort
timing can be realized by the user. This publication
contains sort timing comparison tables made by run-
ning the Sort 2 - Version 2 program on an IBM 1401
Data Processing System and an IBM 1460 Data Pro-
cessing System.
The sort timing estimates are for 4-tape and
6 -tape sorts using the balanced Phase 2 method and
4-tape sorts using the multiphase method of mer-
ging in Phase 2. The parameters involved are:
* Core -storage capacity - 8, 000; 12, 000;
and 16,000 positions
* Magnetic tape units - 7330; 729-II; 729-IV;
729-V; and 729-VI (729-VI used with
1460 only)
* Record size - 10, 20, 40, 80, 100, 200,
500, and 1000 characters
* Input file size - 1000; 2000; 5000; 10,000;
25,000; 50,000; 75,000; and 100,000
records
* Density - 556 characters per inch on
7330; 729-II; and 729-IV tape units.
800 characters per inch on 729-V and
729-VI tape units.
The number of control field characters used for each
table is 10 characters.
COMPARISON TIMING TABLES
This section contains 48 comparison timing tables for
2-way and 3-way balanced merges, and 24 tables for
multiphase merging. All of the parameters pre-
viously discussed have been used to compile these
timing estimate tables. Also included are these three
factors:
G - the number of records sorted internally
in Phase 1
B - the sort blocking factor
P - the number of Phase 2 merge passes
The timings shown have been rounded to the
nearest full minute. In the tables with small record
volume, the asterisk (*) indicates that this run was
accomplished in less than one-half minute.
Copies of this and other mM publications can be obtained through IBM Branch Offices
Address comments regarding the content of this publication to IBM Product Publications, Endicott, New York
2-Way Merge
14.01 146.0 14.01 146.0
INPUT FILE INPUT FILE
SIZE SIZE
733.0 729-11 729-IV 729-V 733.0 729-11 729-IV 729-V 729-VI G B P 733.0 729-11 729-IV 729-V 733.0 729-11 729-IV 729-V 729-VI G B P
150 15.0 1 1 2 1 1 1 1 30 15 6
1000
---- f----~ --- ~ 100.0 2 2
f-----
1 1 1 1 1 1 6 4 3 3 5 3 2 3 2 7
~-
~~OOO 1 1 1
~ 2000
f--- -
3 2 2 2 2 2 6 16 11 9 9 14 8 7 7 6 8
f--
!iOOO 4 3 3
f--
5000
--_ ..- f---~.- -
__ 10000 12 9
-~IQQL _B 7 7 7 5 4 4 4 L ~ 36 24 19 2.0 31 19
--
15 16
-
1.0 ~~ 57 56 86 56 44 43 34 10
_ 2~~ ~2 19 18 18 14 11 11
~ 25000 99 69
-
50.000 47 41 39 4.0 31 25 23 23 22 9 50000 216 136 113 122 188 1.08 85 94 75_._. 11
-----~
-- f-- -
-- 7!iOO.o
10000.0
71
103
62
89
59
85
6.0
86
46
68
37
54
34
49
35
50
32
47
f--
9
10
75000 352 213 176 19.0 306 -~ 131 144 114
148
-
12
12
100000 469 278 231 248 4.08 217 17.0 187
2-WAY MERGE: Core stora~le capacity - 8K; Record length - 1.0; Control fleld - 1.0 2-WA Y MERGE: Core storage capacity - 8K; Record length - 100; Control fie Id - 10
14.01 146.0 1401 146.0
INPUT FILE INPUT FILE
SIZE SIZE
--
-- 1000
733.0
1
729-11
1
729-IV
1
729-V
1
733.0
. .
729-11 729-IV 729-V 729-VI
.
G
75 75
B
f--
P
4 1000
733.0
5
729-11
3
729-IV
3
729-V
3
733.0
5
729-11
3
729-IV
2
729-V
2 2
---
729-VI G
14
B
7
-
P
7
1 1 1 1 1 1 1 1 5 12 8 6 6 11 6 5 5 4 8
-~~ - ! - 2000 ------ --- -
4 4 4 3 2 2 2 7 18 3.0 17 13 14 11 9
--- 5000
--
5 4
- 5000 33 21 17
37 39 66 38
-- -~-----
29
--
32
_._ .. _--
24
-
10
---'-OQQL --'_1 9 8 8 8 6 5 5 5 ~ 1000.0 74 46
-
24 22 23 22 16 14 14 13 9 86 66 11
- - 3.0
- 2500.0 - - - 25000 2.01 12.0 97 106
- -181 -
- 1.0.0
--~-
76
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