Workload and Performance
50 iSeries Handbook
integration with DB2 Universal Database for AS/400 data or use some external program calls
(for example, RPG programs or Java) require careful evaluation.
The resources of Dedicated Server for Domino are focused primarily on the Domino
workloads (see the following figure). Their ability to deliver superior Domino
price/performance depends on running a workload very close to “pure Domino”. A small
percentage of the overall processor capacity (10 to 15%) can be used for non-Domino work,
such as routine system administration tasks and non-Domino programs invoked by the
Domino application.
In evaluating Domino applications that access non-Domino functions, such as DB2/400
integration or program calls, ensure that the non-Domino functions represent a low
percentage of the overall system utilization. Once non-Domino work reaches a maximum
CPU capability on the Dedicated Server for Domino, no additional processing power will be
available for non-Domino workloads. If the proposed Domino application employs any
significant DB2 UDB or program integration, a standard iSeries or AS/400e server model is a
better choice.
5250 Throughput
The iSeries and AS/400e servers support a family of displays and emulation adapters that
are known as the 5250. The supported data stream is known as a 5250 data stream.
Throughput considerations for these workstations regard the flow of the character stream, as
discussed in the following section.
5250 Express Data Stream
The #2720, #2722, #2746, #4746, and #6180 twinax workstation adapter cards have three
major features that can increase throughput:
CAUTION
Domino mail
Domino applications
Mixed Domino
workload
Domino Web serving
DB2 database
integration on the
same server
DB2 database
integration on
another server
AS/400 line of
business (LOB)
applications on the
same server
Large user
community
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