IBM 360 User Manual

IBM Internal Use Only
Patch Panel Work Sheet
Total Elapsed
Time
Any Channel Busy
Compute and
Any Channel
Overlap
Total Compute
N = Not True
H = Hold
S = Set
Figure 31. Wiring for Example 1
The signals from selector channel 1, selector channel 2,
and the multiplexer channel are wired as inputs to the OR
function. One OR output is wired to a TMG hub and results
in any channel busy. Another OR output is wired as input
to an AND function.
The wait signal is wired as input to a NOT function. One
NOT output is wired to a TMG hub and results in total
compute.
Another NOT output is wired as another input to the
AND function. The AND output is wired to a TMG hub
and results in compute and any channel overlap.
Summary
The counter results are:
Counter 0:
Counter 1 :
Counter 2:
Counter 3:
154,011,000
32,417,300
19,450,100
81,800,500
Total elapsed time
Any channel busy
Compute and any channel overlap
Total compute
At the timing rate of 1 MHz (1 microsecond) provided by
the Basic Counter Unit, the readings can be converted to:
Counter 0:
Counter 1:
Counter 2:
Counter 3:
154.0 seconds
32.4 seconds
19.5 seconds
81.8 seconds
Total elapsed time
Any channel busy
Compute and any channel overlap
Total compute
Additional functions were derived from the counter
results by use of formulas:
Compute only = (Total compute) - (Compute and any channel
overlap)
= (Counter 3) - (Counter 2)
= (81.8 seconds) - (19.5 seconds)
= 62.3 seconds
Total wait = (Total elapsed time) - (Total compute)
= (Counter 0) - (Counter 3)
= (154 seconds) - (81.8 seconds)
= 72.2 seconds
Wait and any
channel busy = (Any channel busy) - (Compute and any channel
overlap)
= (Counter 1) - (Counter 2)
= (32.4 seconds) - (19.5 seconds)
= 12.9 seconds
Wait only = (Total wait) - (Wait and any channel busy)
= (72.2 seconds) - (12.9 seconds)
= 59.3 seconds
The measured and derived functions can also be expressed
in percentages:
Compute only:
62.3
seconds
40.5%
Compute and any
channel overlap:
19.5
seconds
12.6%
Wait and any
channel busy:
12.9 seconds 8.4%
Wait only:
59.3
seconds
38.5%
Total elapsed time:
154.0 seconds
100.0%
Measuring Techniques 25

IBM 360 Specifications

General

Brand	IBM
Model	360
Category	Network Hardware
Language	English