Intel 170 Servers, AS/400 RISC Server Performance Monitoring Statistics, Main Storage Options

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