Intel 170 Servers User Manual

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

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

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 Copyright IBM Corp. 2008