C.11.4 SB Models
120
16500
24
8 MB
500
SB3-2318
120
10000
12
8 MB
500
SB3-2316
70
7350
8
4 MB
540
SB2-2315
Interactive CPW
Processor CPW*
CPUs
L2 cache
per CPU
Chip Speed
MHz
Model
Table C.11.4.1 SB Models
* Note: The "Processor CPW" values listed for the SB models are identical to the
830-2403-1531 (8-way), the 840-2418-1540 (12-way) and the 840-2420-1540 (24-way).
However, due to the limited disk and memory of the SB models, it would not be possible
to measure these values using the CPW workload. Disk space is not a high priority for
middle-tier servers performing CPU-intensive work because they are always connected to
another computer acting as the "database" server in a multi-tier implementation.
C.12 V4R4 Additions
The Model 7xx is new in V4R4. Also in V4R4 are the Model 170s features 2289 and 2388 were added.
See the chapter,
AS/400 RISC Server Model Performance Behavior,
for a description of the
performance highlights of these new models.
Testing in the Rochester laboratory has shown that for systems executing traditional commercial
applications such as RPG or COBOL interactive general business applications may experience about a
5% increase in CPU requirements. This effect was observed using the workload used to compute CPW, as
shown in the tables that follows. Except for systems which are nearing the need for an upgrade, we do not
expect this increase to significantly affect transaction response times. It is recommended that other
sections of the Performance Capabilities Reference Manual (or other sizing and positioning documents)
be used to estimate the impact of upgrading to the new release.
C.12.1 AS/400e Model 7xx Servers
MAX Interactive CPW = Interactive CPW (Knee) * 7/6
CPU % used by Interactive @ Knee = Interactive CPW (Knee) / Processor CPW * 100
CPU % used by Processor @ Knee = 100 - CPU % used by Interactive @ Knee
CPU % used by Interactive @ Max = Max Interactive CPW / Processor CPW * 100
280
240
1600
4
4 MB
255
720-2064 (1503)
140
120
1600
4
4 MB
255
720-2064 (1502)
40.8
35
1600
4
4 MB
255
720-2064 (Base)
653.3
560
810
2
4 MB
200
720-2063 (1504)
280
240
810
2
4 MB
200
720-2063 (1503)
140
120
810
2
4 MB
200
720-2063 (1502)
40.8
35
810
2
4 MB
200
720-2063 (Base)
280
240
420
1
4 MB
200
720-2062 (1503)
140
120
420
1
4 MB
200
720-2062 (1502)
81.7
70
420
1
4 MB
200
720-2062 (1501)
40.8
35
420
1
4 MB
200
720-2062 (Base)
140
120
240
1
n/a
200
720-2061 (1502)
81.7
70
240
1
n/a
200
720-2061 (1501)
40.8
35
240
1
n/a
200
720-2061 (Base)
Interactive CPW
(Max
)
Interactive CPW
(Knee)
Processor CPW
CPUs
L2 cache
per CPU
Chip Speed
MHz
Model
Table C.12.1.1 Model 7xx Servers (all new Northstar models)
IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
©
Copyright IBM Corp. 2008
Appendix C CPW, CIW and MCU for System i Platform
361
