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Derivation
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Appendix D
MODELLING DOCUMENTATION
LIST OF CONTENTS
D.1 Baseline Network Transaction Volumes
D.2 1991 Projection, Transaction Volumes
D.3 NODAL SWITCH PROCESSOR, End-to-end Response Time
D.4 NODAL SWITCH PROCESSOR, CPU Utilization
D.5 NODAL SWITCH PROCESSOR, Memory Utilization
D.6 QUEUING MODELLING
D.1 BASELINE NETWORK
Transaction Volumes
D.2 1991 PROJECTION
Transaction Volumes
D.3 NODAL SWITCH PROCESSOR
End-to-end Response Time
T̲y̲p̲e̲ ̲"̲A̲"̲ ̲t̲r̲a̲f̲f̲i̲c̲
…0e…t…0f…average …0e…t…0f…85 …0e…t…0f…90
…0e…t…0f…95
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
ACDN, nodes (4) 156 188 212
252
trunks (2) 94 159 194
252
Host 500 500 500
500
ICC-access network ̲5̲0̲6̲ 8̲7̲6̲ ̲
̲ 1̲1̲7̲2̲
̲
̲
̲ 1̲6̲7̲8̲
Response time 1256 1723 2078 2682
Delivery time 2114 2583 2938 3542
T̲y̲p̲e̲ ̲"̲B̲"̲ ̲t̲r̲a̲f̲f̲i̲c̲
ACDN, nodes (4) + EMH 156 188
212
252
trunks (2) 158 222 256
316
EMH, EMH 200 200 200
200
ICC-access network 1̲5̲6̲9̲ 1̲9̲3̲9̲ 2̲2̲3̲5̲ 2̲7̲4̲1̲
Response time 2083 2549 2903 3509
Delivery time 3300 3766 4120 4726
C̲S̲I̲H̲ ̲t̲r̲a̲f̲f̲i̲c̲
ACDN, nodes (4) 320 352 376
420
trunks (2) 468 532 568
626
CSIH 500 500 500
500
CSIH-access lines 9.6Kbps 4̲7̲8̲3̲ 9̲4̲3̲7̲ ̲ ̲ ̲ ̲1̲1̲8̲3̲5̲
̲ ̲ ̲ ̲ ̲1̲5̲9̲3̲7̲
Response time 6071 10821 13294
17483
A̲v̲e̲r̲a̲g̲e̲ ̲t̲r̲u̲n̲k̲
average average
trunk traffic info xmit
A, incoming 38 38 14.4 23.2
A, outgoing 41 238 97.6 107.0
B 9 358 32.2 34.3
CSIH 12 467 56.0 58.8
Service msg. 10 200 ̲ ̲0̲.̲0̲ ̲2̲2̲.̲3̲
̲
200.2 245.6
81.5%
P̲r̲o̲c̲e̲s̲s̲ ̲ ̲ ̲L̲o̲c̲a̲t̲e̲d̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲S̲e̲r̲v̲e̲r̲s̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲C̲o̲m̲m̲e̲n̲t̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
P…0f…1…0e… LTU…0f…i…0e…/Host single Low level interface
P…0f…2…0e… NSP…0f…i…0e… 4 TAS, virtual protocol handling
P…0f…3…0e… NSP…0f…i…0e… 4 NSS, incoming/routing
P…0f…4…0e… NSP…0f…j…0e… 4 NSS, outgoing handling
P…0f…5…0e… LTU…0f…j…0e… 2 or more NSS, internodal trunk group
P…0f…6…0e… LTU…0f…i…0e…' single as P…0f…1…0e…
P…0f…7…0e… NSP…0f…i…0e…' 4 as P…0f…3…0e…
P…0f…8…0e… NSP…0f…j…0e…' 4 as P…0f…4…0e…
P…0f…9…0e… LTU…0f…j…0e…' 2 or more as P…0f…5…0e…
P…0f…10…0e… LTU…0f…i…0e…" single as P…0f…1…0e…
P…0f…11…0e… NSP…0f…i…0e…" 4 as P…0f…3…0e…
P…0f…12…0e… NSP…0f…i…0e…" 4 HAS, virtual protocol handling
P…0f…13…0e… NSP…0f…j…0e…" 4 HAS, channel program
P…0f…14…0e… Host ctr'r/LTU…0f…j…0e…" *) HAS
*) host assumed single, no bandwidth limitations
present ICC-type access lines 3 servers
IBM 327x cluster controller single.
Q̲u̲e̲u̲e̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲T̲y̲p̲e̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
Q…0f…1…0e…, Q…0f…6…0e…, Q…0f…10…0e… Incoming transaction queue
Q…0f…3…0e…, Q…0f…7…0e…, Q…0f…12…0e… Outgoing transaction queue
Q…0f…9…0e…, Q…0f…8…0e…, Q…0f…13…0e… Transmission queue
T̲y̲p̲e̲ ̲"̲A̲"̲ ̲t̲r̲a̲f̲f̲i̲c̲ ̲ msec
I̲C̲C̲-̲t̲y̲p̲e̲ ̲a̲c̲c̲e̲s̲s̲ ̲l̲i̲n̲e̲ average
85%
90%
95%
(14% utilization)
t…0f…P…0e…, multidrop + access line 25 25
25 25
t…0f…W…0e…+t…0f…S…0e…, access line ̲ ̲1̲9̲7̲ ̲ ̲ ̲ ̲ ̲1̲9̲7̲ ̲ ̲ ̲ ̲ ̲1̲9̲7̲ ̲ ̲
̲ ̲ ̲1̲9̲7̲
222 222
222 222
I̲n̲g̲o̲i̲n̲g̲ ̲t̲r̲a̲n̲s̲a̲c̲t̲i̲o̲n̲
t…0f…S,1…0e… 3 3
3
3
t…0f…Q,1…0e…+t…0f…S,2-3…0e…+t…0f…Q,3…0e…+t…0f…S,4…0e… 27 35
41
51
t…0f…S,5…0e… 3 3
3
3
t…0f…Q,4…0e… 33 65
83
112
t…0f…P,trunk…0e… 15 15
15
15
t…0f…S,10…0e… 3 3
3
3
t…0f…Q,10…0e…+t…0f…S,11-12…0e…+t…0f…Q,12…0e…+t…0f…S,13…0e…27 35 41
51
t…0f…Q,13…0e…+t…0f…S,14…0e… ̲ ̲0̲ ̲ ̲0̲
̲
̲0̲
̲
̲0̲
111 159 189 238
Host 500 500 500 500
O̲u̲t̲g̲o̲i̲n̲g̲ ̲t̲r̲a̲n̲s̲a̲c̲t̲i̲o̲n̲
t…0f…S,14…0e… 0 0
0
0
t…0f…Q,13…0e…+t…0f…S,13…0e…+t…0f…Q,12…0e…+t…0f…S,11-12…0e… 27 35
41
51
t…0f…S,10…0e… 3 3
3
3
t…0f…Q,10…0e… 61 94 117 140
t…0f…P…0e…, trunk 15 15
15
15
t…0f…S,5…0e… 3 3
3
3
t…0f…Q,4…0e…+t…0f…S,4…0e…+t…0f…Q,3…0e…+t…0f…S,2-3…0e… 27 35
41
51
t…0f…S,1 ̲ ̲3̲ ̲ ̲3̲
̲
̲3̲
̲
̲3̲
139 188 219 266
t…0f…W,access line…0e… 259 629 925
1431
t…0f…P, multidrop + access…0e… ̲2̲5̲ ̲2̲5̲ ̲
̲2̲5̲
̲2̲5̲
284 543 950
1456
T̲y̲p̲e̲ ̲"̲B̲"̲ ̲t̲r̲a̲f̲f̲i̲c̲ ̲ msec
I̲C̲C̲-̲t̲y̲p̲e̲ ̲a̲c̲c̲e̲s̲s̲ ̲l̲i̲n̲e̲ average 85% 90% 95%
(less 20% utilization)
t…0f…P, multidrop +
access link…0e…
25
25
25
25
t…0f…W…0e…+t…0f…S…0e…, access line 1̲2̲6̲0̲ 1̲2̲6̲0̲ 1̲2̲6̲0̲ 1̲2̲6̲0̲
1285 1285 1285 1285
I̲n̲c̲o̲m̲i̲n̲g̲ ̲t̲r̲a̲n̲s̲a̲c̲t̲i̲o̲n̲
t…0f…S,1…0e… 3 3
3
3
t…0f…Q,1…0e…+t…0f…S,2-3…0e…+t…0f…Q,8…0e…+t…0f…S,4 27 35
41
51
t…0f…S.5 3 3
3
3
t…0f…Q,4 79 111
127
158
t…0f…P,trunk…0e… 15 15
15
15
t…0f…S,10…0e… 3 3
3
3
t…0f…Q,10…0e…+t…0f…S,11-12…0e…+t…0f…Q,12…0e…+t…0f…S,13…0e… 27 35
41
51
t…0f…Q,13…0e…+t…0f…S,14…0e…(supra bus) ̲ ̲ ̲0̲ ̲ ̲ ̲0̲
̲
̲
̲0̲
̲
̲
̲0̲
157 205
234
284
EMH 200 200
200
200
Outgoing transaction 157 205
234
284
I̲C̲C̲-̲t̲y̲p̲e̲ ̲a̲c̲c̲e̲s̲s̲ ̲l̲i̲n̲e̲
(60% utilization)
t…0f…W…0e…, access line 259 629
925 1431
t…0f…P…0e…, multidrop + access line ̲ ̲2̲5̲ ̲ ̲2̲5̲
̲
̲2̲5̲
̲
̲2̲5̲
284 654
950 1456
C̲S̲I̲H̲-̲t̲y̲p̲e̲ ̲t̲r̲a̲f̲f̲i̲c̲
C̲S̲I̲H̲ ̲a̲c̲c̲e̲s̲s̲ ̲l̲i̲n̲e̲
(60% utilization/9.6Kbps)
t…0f…P…0e…, multidrop + access line 25 25
25
25
t…0f…W…0e…+t…0f…S…0e…, access line 2̲3̲5̲8̲ 5̲2̲8̲5̲ 6̲4̲8̲4̲ 8̲5̲3̲5̲
2983 5310 6509 8560
I̲n̲c̲o̲m̲i̲n̲g̲ ̲t̲r̲a̲n̲s̲a̲c̲t̲i̲o̲n̲
t…0f…S,1…0e… 5 5
5
5
t…0f…Q,1…0e…+t…0f…S,2-3…0e…+t…0f…Q,3…0e…+t…0f…S,4…0e… 62 70
76
87
t…0f…S,5…0e… 8 8
8
8
t…0f…Q,4…0e… (assumed same trunk) 234 266
284
313
t…0f…P,trunk…0e… 15 15
15
15
t…0f…S,10…0e… 8 8
8
8
t…0f…Q,10…0e…+t…0f…S,11-12…0e…+t…0f…Q,12…0e…+t…0f…S,13…0e… 62 70
76
87
t…0f…Q,13…0e…+t…0f…S,14…0e… ̲ ̲ ̲0̲ ̲ ̲ ̲0̲
̲
̲
̲0̲
̲
̲
̲0̲
394 442
472
523
CSIH 500 500
500
500
Outgoing transaction 394 442
472
523
C̲S̲I̲H̲ ̲a̲c̲c̲e̲s̲s̲ ̲l̲i̲n̲e̲
(60% utilization, 9.6Kbps)
t…0f…W…0e…, access line 1775 4102 5301 7352
t…0f…P…0e…, multidrop-access line ̲ ̲2̲5̲ ̲ ̲2̲5̲
̲
̲2̲5̲
̲
̲
̲2̲5̲
1800 4127 5326 7377
Part of Average t…0f…s…0e… average 85
90 90
Type Transactions Length
(%) (chars) (msec) (msec) (msec)
(msec) (msec)
Average - 200 - 24.1 56.5
73.8 103.2
(msec) (msec) (msec)
(msec) (msec)
A, incoming 38 38 38.7 33 65
83 112
A, outgoing 41 238 37.3 61 94
111 140
B 9 358 54.4 79 111
128 158
CSIH 4x3 467 20.9 234 266
284 313
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
Figure 3: TRUNK WAITING AND DELIVERY TIMES
Part of Average t…0f…s…0e… average 85
90 90
Type Transactions Length
(%) (chars) (msec) (msec) (msec)
(msec) (msec)
Average - 243 - 259.2 628.8
925.0 1431.4
msec) (msec) (msec)
(msec) (msec)
A, outgoing 95 238 869 1119 1489
1785 2291
5 3588 1216.7 1476 1845
2142 2648
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
Figure : ICC-TYPE WAITING AND DELIVERY TIMES
D.4 NODAL SWITCH PROCESSOR
CPU Utilization
Single CPU per
cent
P̲r̲o̲c̲e̲s̲s̲i̲n̲g̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲m̲s̲e̲c̲ ̲ ̲ ̲u̲t̲i̲l̲i̲z̲a̲t̲i̲o̲n̲
25 packets (in and out)
VTP/VFP handling 2.4
packet switching 15.4
44.5
10 % acknowledgements
packet switching 15.4
3.9
5 % service/control traffic
service/control generation 5
packet switching 15.4
2.6
Check-Pointing, local interrogations,
line recovery processing, etc. 20%
10.2
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
C P U Utilization (per cent)
61
P̲a̲c̲k̲e̲t̲ ̲S̲w̲i̲t̲c̲h̲ ̲H̲a̲n̲d̲l̲i̲n̲g̲
I̲n̲c̲o̲m̲i̲n̲g̲ msec
interrupt .040
serve interrupt .040
set-up port semaphone & map-in segment .100
read header & control info .050
execute protocol .500
collect statistics
10 items a 50 msec .500
DMA data to PU-RAM
DMA .143
.086
…0e… XFER…0f… .068
.112
…0e… DVM…0f… .̲2̲5̲5̲ .660
send sync. to out queue 1.01
wait reply 1.33
release LTU port segment .050
contingency (25%9 1̲.̲0̲5̲7̲
5.3
msec
S̲u̲p̲r̲a̲b̲u̲s̲ ̲x̲f̲e̲r̲
wait sync. 1.33
transfer (CPU-load) 1.0
transfer (CPU-load) 1.0
send sync. 1.01
contingency (20%9 1̲.̲0̲8̲5̲
5.4
msec
O̲u̲t̲g̲o̲i̲n̲g̲
wait sync. 1.33
identify which port .040
set-up port semaphone & map-in segment .100
read header & control info .050
execute protocol .500
DMA data to LTU .660
sent sync. 1.01
release port segment .050
contingency (25%9 .̲9̲3̲5̲ 4.7
msec
V̲T̲P̲/̲T̲F̲P̲ ̲h̲a̲n̲d̲l̲i̲n̲g̲
240 chars per transaction
every 10th char each 100 usec. 2.4
msec
D.5 NODAL SWITCH PROCESSOR
Memory Utilization
P̲r̲o̲g̲r̲a̲m̲
DAMOS
- GPS, monitor procedures 13.3 K
- kernel program segments 14.1 K
- handlers 13.6 K
( - handler inclusions .3 K
- initialization 1.8 K)
- basic datagram service ̲2̲ ̲ ̲ ̲K̲
̲ ̲
43
K
Nodal Switch Software
- X.75/3 3 K
- Transport Software 4 K
- VCM ̲5̲ ̲ ̲ ̲K̲
̲ ̲
12
K
TAS Software
- ICC/3 5 K
- Terminal Access (2) 13 K
- VTP 2̲1̲ ̲ ̲ ̲K̲
̲ ̲
39
K
HAS Software
- Handlers 4 K
- Host Access (2) 7 K
- VFP ̲7̲ ̲ ̲ ̲K̲
̲ ̲
18
K
Internal Network Access Software
- ACNC Handler 4 K
- ICC Emulator ̲4̲ ̲ ̲ ̲K̲
̲ ̲
8
K
External Network Access Software
- ARINC 4 K
SITA 4 K
CNT ̲4̲ ̲ ̲ ̲K̲
̲ ̲
12
K
System Control Software
- Supervisory and Control 7 K
- Recovery Module ̲2̲ ̲ ̲ ̲K̲
̲ ̲
̲
̲9̲
̲K̲
̲
Total memory (max.) 141
K
D̲a̲t̲a̲
DAMOS
- kernel basic data 15 K
- handlers - 36 devices 36 K
- 20 processes - PCB's 2 K
- 20 " - PPS's 4̲0̲ ̲ ̲ ̲K̲
̲ ̲
93
K
Application
- tables, indices 10 K
- 3000 CRT subscriber CB's 48 K
associated SCB' - 2 72 K
- 1500 other subscriber CB's 24 K
associated (perm) SCB's 1̲8̲ ̲ ̲ ̲K̲
̲ ̲ 172
K
Buffer
- incoming each 64 bytes 6 K
- outgoing each 512 bytes 1̲3̲8̲ ̲ ̲ ̲K̲
̲ 144 K
ACDN
Buffer
buffers trans/ trans/ Occupancy
traffic
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲h̲o̲u̲r̲ ̲ ̲ ̲ ̲ ̲ ̲s̲e̲c̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲m̲s̲e̲c̲
̲ ̲ ̲ ̲ ̲ ̲ ̲r̲a̲t̲e̲ ̲ ̲ ̲
Short buffer (64 bytes)
Incoming, type A 1 616 46.1 61
2.1
" type B 6 5 2.4 106
̲.̲3̲
3.1
Packet buffers
Incoming, CSIH 3 33 7.5 262
2
Outgoing, type A 1 617 46.2 1147
53
" type B 1 32 2.4 1504
4
" CSIH 3 33 7.5 2986
2̲2̲ ̲
81
D.6 NODAL SWITCH PROCESSOR
QUEUING MODELLING
APPENDIX B C̲R̲8̲0̲ ̲D̲a̲t̲a̲ ̲S̲h̲e̲e̲t̲s̲
In this appendix all proposed H/W equipment data
sheets are shown.
This include Characteristics, Mechanical Dimensions,
Mean Time Between Failure (MTBF), Power Consumption
(if any), and a brief description of the equipment.
APPENDIX F F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲P̲r̲e̲s̲e̲n̲t̲a̲t̲i̲o̲n̲ ̲o̲f̲ ̲t̲h̲e̲ ̲A̲u̲t̲o̲m̲a̲t̲e̲d̲ ̲T̲e̲s̲t̲
̲&̲ ̲E̲m̲u̲l̲a̲t̲i̲o̲n̲ ̲S̲y̲s̲t̲e̲m̲,̲ ̲A̲T̲E̲S̲
ATES provides capabilities to
- test software
- test configurations
at
- user level
- site component level
- site level
- network level
ATES is developed by Christian Rovsing in CAMPS
(Computer Assisted Message Processing System) project
for NATO/SHAPE.
ATES can be executed on the redundant equipment
in the Air Canada Data Network.
It is possible to electically isolate the operations
in the redundant equipment from those in the active
equipment, thereby ensuring that the ATES will
not influence the active equipment operation.
The separate test network hereby set-up provides
the ability to
- run tests in the daytime.
