Intel AS/400 RISC Server - Manual (Page 168)

11.10 Performance Monitoring Statistics
Function to monitor performance statistics was added to Domino Release 5.0.3. Domino will track
performance metrics of the operating system and output the results to the server. Type "show stat
platform" at the server console to display them. This feature can be enabled by setting the parameter
PLATFORM_STATISTICS_ENABLED=1 in the NOTES.INI file and restarting your server and is
automatically enabled in some versions of Domino. Informal testing in the lab has shown that the
overhead of having statistics collection enabled is quite small and typically not even measurable.
The i5/OS Performance Tools and Collection Services function can be enabled to collect and report
Domino performance information by specifying to run the COLSRV400 task in the Domino server
notes.ini file parameter: ServerTasks=UPDATE,COLSRV400,ROUTER,COLLECT,HTTP. With V5R4
a new Domino Server Activity section has been added to the Performance Tools Component Report
which looks like the following:
Component Report 10/20/05 16:21:33
Domino Server Activity Page 76
Member . . . : PERFMON01 Model/Serial . : 595/55-55555 Main storage . . : 374.0 GB Started . . . . : 10/20/05 07:56:10
Library . . : NZEN101905 System name . . :MySystemi Version/Release : 5/ 4.0 Stopped . . . . : 10/20/05 08:28:00
Partition ID : 001 Feature Code . :7487-8966 Int Threshold . : 100.00 %
Virtual Processors: 16 Processor Units : 16.0
Server : 855626/QNOTES/SERVER
Peak ------- Mail ------ ------- Database ------- ----- Name lookup ------
Itv Tns CPU Concur Pending Waiting Cache Cache Cache Cache URLs
End /Hour Users Util Users Outbound Inbound Hits Lookups Hits Lookups Rcv/Sec
----- -------- ------ ------ ------- -------- --------- ----------- ----------- ----------- ----------- -------
07:58 1515420 18001 39.50 18001 23 0 0 264 0 0 0
07:59 1550099 18001 37.25 18001 23 0 0 0 0 0 0
08:00 1536840 18001 31.95 18001 24 0 0 0 0 0 0
08:01 1874520 18001 35.46 18001 24 0 0 0 0 0 0
.
.
.
08:24 1580400 18001 37.21 18001 34 0 0 0 0 0 0
08:25 1589159 18001 34.79 18001 40 0 0 0 0 0 0
08:26 1575959 18001 35.99 18001 40 0 0 0 0 0 0
08:27 1579739 18001 35.31 18001 40 0 0 0 0 0 0
08:28 1516680 18001 36.84 18001 40 0 0 0 0 0 0
Column Average
------------------------------ ----------------
Tns/Hour 1,531,036
Users 18,001
CPU Util 36.55
Peak Concurrent Users 18,001
Mail Pending Outbound 829
Mail Waiting Inbound 0
Database Cache Hits 0
Database Cache Lookups 906
Name Lookup Cache Hits 0
Name Lookup Cache Lookups 0
URLs Rcv/Sec 0
11.11 Main Storage Options
V5R3 provides performance improvements for the *DYNAMIC setting for Main Storage Option on
stream files. The charts found later in this section show the improved performance characteristics that can
be observed with using the *DYNAMIC setting in V5R3.
In V5R2 two new attributes were added to the OS/400 CHGATR command, *DISKSTGOPT and
*MAINSTGOPT. In this section we will describe our results testing the *MAINSTGOPT using the Mail
and Calendar workload. The allowed values for this attribute include the following:
1. *NORMAL
The main storage will be allocated normally. That is, as much main storage as possible will be
allocated and used. This minimizes the number of disk I/O operations since the information is cached
in main storage. If the *MAINSTGOPT attribute has not been specified for an object, this value is
the default.
IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
©
Copyright IBM Corp. 2008 Chapter 11 - Domino 168