QUESTION:
These are questions for the Pergmgr.
1. Is there a way, probably via the API, to trigger recording of
an instrument based on a threshold value?
2. How do I display graphically system statistics that are not listed
under the standard instruments? For example, I would like to monitor
CPU utilization of a specific process, and have the information
displayed graphically.
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A: In response to your questions:
1) Is there a way to trigger recording of an instrument based
on a threshold value?
No, recording can only be initiated from the menu selections.
One possible solution would be to use an alarm to notify
you when a threshold is surpassed. You could then manually
start the recording. If you write your own statistic recording
application, it too could be started by using the alarm
facility. The alarm facility is documented on pages 153-155
of the AIX Performance Toolbox/6000 User's Guide.
2) How do I monitor a specific system process graphically?
Follow these steps:
1) From the main xmperf menu Select 'Monitor'.
2) Select 'Add New Console'.
3) Give the new console a name and Select 'Proceed'
to bring up the new console.
4) From the new console Select 'Edit Console'.
5) Select 'Add Local Instrument' to bring up a local instrument
selection box.
6) From this box, Select 'Process statistics' to bring up a
process selection window.
7) From this window, select the process you wish to monitor
by double-clicking. This will bring up a window to allow
to select what characteristic of that process you wish
to monitor.
8) Select 'Process CPU use in user mode (percent)'. This will
bring up a 'Changing Properties of a Value' menu.
9) Make any changes to the properties and Select 'Apply'.
10) Select 'End Selection' from the previous window.
The new console will appear monitoring the process you selected.
You can repeat steps 3-10 to add other process monitors to
your console. Simply make a different selection in step 8.
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QUESTION:
What if the system resource that I want to monitor and display
is not on the list of available instruments?
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A: If the system resource that you want to monitor and display is not
on the list of available instruments, you can add it by using
the System Performance Measurement Interface API (Spmi). Spmi
is documented in chapter 11 of "AIX Performance Toolbox/6000
User's Guide" (SC23-2579-00). According to the User's Guide:
It allows you to write programs that extend the number of
statistics available from a host's xmservd daemon (Dynamic
Data Supplier programs) and to write programs that access
statistics on the local host without using the network
interface.
Chapter 11 takes you through a step-by-step example of how to use
the API to create your own Dynamic Data Supplier program. A
Dynamic Data Supplier program is intended to extend the set of
statistics that data consumer programs can be supplied with,
either from the xmservd daemon of a host or directly from the
Spmi repository through local Data Consumer programs. A Dynamic
Data Supplier can add statistics as permanent or dynamic contexts
with subcontexts and statistics.
Included is the code and Makefile of a complete Dynamic Data
Supplier program.
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This item was created from library item Q651988 CPKNG
Additional search words:
CPKNG CUSTOMIZATIO CUSTOMIZE FEB94 IX LPPS OZNEW PERFMGR QUESTION
RISCO RISCSYSTEM SOFTWARE SUPT
WWQA: ITEM: RTA000038385 ITEM: RTA000038385
Dated: 01/1995 Category: RISCO
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