Appendix A. Performance Data
288
PACSystems* RX7i, RX3i and RSTi-EP CPU Reference Manual
GFK-2222AD
Data Transfer Time
Note
:
This is the time required to transfer the data between the CPU module and the rack-based
Ethernet module. EGD data transfer times do not increase linearly in relation to data size.
Please use the data values in the table below to estimate data transfer times.
Note
:
CPE modules do not need to use this table with respect their embedded Ethernet port, as
there is no transfer of data across the backplane related to EGD traffic.
CPU
Data Size (Bytes)
Direction
Embedded
Ethernet
Interface (µS)
Rack-based
Ethernet Module
(µS)
CPU310
NIU001
103
1
Consume / READ
NA
9.3
100
Consume / READ
NA
51.8
200
Consume / READ
NA
97.9
256
Consume / READ
NA
123.8
1
Produce / WRITE
NA
6.5
100
Produce / WRITE
NA
14.1
200
Produce / WRITE
NA
17.7
256
Produce / WRITE
NA
19.3
CPU315
CPU320
1
Consume / READ
NA
6.2
100
Consume / READ
NA
49.5
200
Consume / READ
NA
96.4
256
Consume / READ
NA
122.8
1
Produce / WRITE
NA
3.4
100
Produce / WRITE
NA
9.9
200
Produce / WRITE
NA
14.9
256
Produce / WRITE
NA
16.5
CPE010
1
Consume / READ
4.1
8.8
100
Consume / READ
25.7
23.5
200
Consume / READ
49.0
38.6
256
Consume / READ
61.4
46.8
1
Produce / WRITE
1.9
8.8
100
Produce / WRITE
4.0
16.5
200
Produce / WRITE
6.0
22.2
256
Produce / WRITE
7.1
25.1
CPE020
1
Consume / READ
2.7
5.5
100
Consume / READ
23.6
19.5
200
Consume / READ
46.3
34.9
256
Consume / READ
58.9
42.7
1
Produce / WRITE
0.8
5.5
100
Produce / WRITE
2.7
13.9
200
Produce / WRITE
4.7
19.2
256
Produce / WRITE
5.9
22.1
103
EGD performance is different on the IC69 (versions-AAAA and later) compared to the IC695NIU001. In general,
consumed data exchanges with a size greater than 31 bytes will result in contributing less of a sweep time impact and data
exchanges with a size less than that will contribute slightly greater sweep impact. All produced exchanges on the
IC69 will appear to have a slightly greater sweep impact when compared to the IC695NIU001.
