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OS/2 Help File
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1993-11-11
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8KB
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280 lines
ΓòÉΓòÉΓòÉ 1. Display ΓòÉΓòÉΓòÉ
Select Display to open or close a resource graph (open graphs are indicated by
a check mark), to freeze or reset the graphs, or to exit the SPM/2 Graph.
ΓòÉΓòÉΓòÉ 1.1. CPU Graph ΓòÉΓòÉΓòÉ
Click on CPU Graph to start graphing central processing unit usage.
The CPU Graph measures total CPU usage by plotting the percentage of time that
the CPU is busy against total CPU time. If CPU activity remains high for an
extended period of time, the system may have too many tasks running at once. If
CPU activity is low, the system may be under-used and can probably handle more
tasks.
ΓòÉΓòÉΓòÉ 1.2. Disk Graph ΓòÉΓòÉΓòÉ
Click on Disk Graph to start graphing disk device driver activity.
The Disk Graph measures the percentage of time the disk device driver is
handling requests against the total time. This period begins when the I/O
request is handed to the device driver and ends when the request is complete
(when data is either written or read and returned to the requester.)
If disk activity remains high for an extended period of time, processes may
have to wait significant periods of time in a queue to access the disk before
continuing. This can slow system response time.
ΓòÉΓòÉΓòÉ 1.3. RAM Graph ΓòÉΓòÉΓòÉ
Click on RAM Graph to start graphing memory activity.
The RAM Graph uses five resource data lines to display information about two
types of memory activity:
o Memory allocation and use
- Resident memory
- Working set memory
- Used memory
o Paging activity
- Page-out activity (times 10)
- Page-in activity (times 10)
If page-in and page-out activity are high and the working set is near 100%,
you may need to install more memory.
ΓòÉΓòÉΓòÉ 1.4. Freeze graphs ΓòÉΓòÉΓòÉ
Select Freeze graphs to stop plotting of data points on the graph window. Data
collection continues, but no new points are plotted. When Freeze graphs is
deselected, the first new point plotted reflects the most recent time period.
ΓòÉΓòÉΓòÉ 1.5. Reset graphs ΓòÉΓòÉΓòÉ
Select Reset graphs to reset all the resource graphs to the same point on the
horizontal axis, thereby allowing synchronization of events being plotted.
ΓòÉΓòÉΓòÉ 1.6. Exit ΓòÉΓòÉΓòÉ
Select Exit to shut down this SPM/2 Graph session. To restart the session go
to the Control panel. Then:
o Select Monitor
o Select Start
o Select Graphing
o Type the name of the monitor session you want to restart.
ΓòÉΓòÉΓòÉ 2. Options ΓòÉΓòÉΓòÉ
Select Options to modify SPM/2 Graph parameters. You can modify time periods,
set graph colors, select how often the resource data line shifts left, and
display legends.
ΓòÉΓòÉΓòÉ 2.1. Time periods ΓòÉΓòÉΓòÉ
Select Time periods to change the times that data will be collected and
displayed, and to choose an interval for gridline spacing.
ΓòÉΓòÉΓòÉ 2.2. Legends ΓòÉΓòÉΓòÉ
Select Legends to display the names of the resources being graphed. The
legends display on the right-hand side of each graph and show the name of the
resource in the same color as the corresponding data line.
ΓòÉΓòÉΓòÉ 2.3. Set colors ΓòÉΓòÉΓòÉ
Select Set colors to change the background color or the data line color of the
selected resource graph.
ΓòÉΓòÉΓòÉ 2.4. Sliding graphs ΓòÉΓòÉΓòÉ
Select Sliding graphs to allow the graphs to slide left every time a new point
is added. A check mark indicates that this option is selected.
When this option is not selected the graphs shift left 1/3 of the window when
the data line reaches the right side of the window. This mode, which is the
default, is less CPU-intensive.
ΓòÉΓòÉΓòÉ 3. Window ΓòÉΓòÉΓòÉ
Select Window to realign the resource graphs inside the SPM/2 window or to
switch to a specific resource graph.
ΓòÉΓòÉΓòÉ 3.1. Cascade ΓòÉΓòÉΓòÉ
Select Cascade to arrange the resource graphs in a stairstep fashion within the
SPM/2 Graph window.
ΓòÉΓòÉΓòÉ 3.2. Tile horizontal ΓòÉΓòÉΓòÉ
Select Tile horizontal to arrange the resource graphs side-by-side within the
SPM/2 Graph window.
ΓòÉΓòÉΓòÉ 3.3. Tile vertical ΓòÉΓòÉΓòÉ
Select Tile vertical to arrange the resource graphs one on top of the other
within the SPM/2 Graph window.
ΓòÉΓòÉΓòÉ 3.4. Switch to specified resource graph ΓòÉΓòÉΓòÉ
Select the resource graph window you want to focus on.
ΓòÉΓòÉΓòÉ 4. Set colors ΓòÉΓòÉΓòÉ
Use Set colors to modify your resource graph colors.
o Select Graph
Displays a list of resource graphs from which to choose.
o Select item to modify
Displays a list of elements that may be changed for the selected resource
Graph. Select one element at a time for modification.
o Colors preview
Displays a sample of the resource graph in the selected colors.
o Press buttons to modify colors
The color buttons move forward and backward through the range of colors
possible for the selected item.
ΓòÉΓòÉΓòÉ 5. Time periods ΓòÉΓòÉΓòÉ
Use Time Periods to specify the times that data will be collected and
displayed.
o Viewing period
Specify the amount of time you want to show on an entire resource data line.
This value must be a multiple of the sampling period. The default is 50
times the sampling period. So if your sampling period is 10 seconds then
the resource data line will be 500 seconds long.
o Grid lines
Specify number of seconds between vertical grid lines along the time axis.
The gridlines are initially spaced at intervals of 10 times the collection
frequency.
ΓòÉΓòÉΓòÉ 6. Workstation list ΓòÉΓòÉΓòÉ
This panel displays the names of all the workstations defined in the current
monitor session. Select the workstation you want to view.
Note: If you select an inactive workstation an empty graph is displayed.
ΓòÉΓòÉΓòÉ 7. Goto ΓòÉΓòÉΓòÉ
This panel displays the time the monitor session was active. Specify a
starting date and time for the data you want to replay. The starting time must
be within the interval during which the specified log file was active.
ΓòÉΓòÉΓòÉ 8. Help ΓòÉΓòÉΓòÉ
Use these choices to find out how to use help, to get general help, to display
a list of key definitions.
Using help
Provides detailed information on the kinds of help available and how to
use help.
General help
Displays general help for SPM/2.
Keys help
Displays a list of keys for SPM/2.
ΓòÉΓòÉΓòÉ 8.1. Using help ΓòÉΓòÉΓòÉ
Use this choice to obtain information on how to use the Help facility.
ΓòÉΓòÉΓòÉ 8.2. General help ΓòÉΓòÉΓòÉ
Use this choice to obtain general information about SPM/2 Graph.
ΓòÉΓòÉΓòÉ 8.3. Keys help ΓòÉΓòÉΓòÉ
Use this choice to see a list of keys and a description of their function.
ΓòÉΓòÉΓòÉ 8.4. SPM/2 Graph ΓòÉΓòÉΓòÉ
The SPM/2 Graph summarizes performance data in graph form and displays the data
in a window. You can graph data as it is collected or playback previously
recorded data.
A resource data line is displayed for each of the resources being graphed. Each
data line shows the percentage of activity for CPU, disk, or memory usage.
To playback previously recorded data select the first icon on the function
control bar (it looks like a tape cassette). A set of icons is displayed to
allow you to select the playback feature you want. For a description of the
icons see the online SPM/2 User's Guide and Reference located in the SPM/2
folder.
Select Display to open or close a resource graph (open graphs are indicated by
a check mark), to freeze or reset the graphs, or to exit the SPM/2 Graph.
Select Options to modify SPM/2 Graph parameters. You can modify time periods
and colors, and select the graph refreshing technique (Sliding graphs) and
whether to display the graph Legends.
Select Window to realign the resource graphs inside the SPM/2 window or to
switch to a specific resource graph.
NOTE: Closing the Graph window does not stop real time data collection. You
must stop collection from the SPM/2 control window or from the command line.
ΓòÉΓòÉΓòÉ 8.5. Key assignments for SPM/2 ΓòÉΓòÉΓòÉ
The list of keys is arranged in groups.
ACCELERATOR KEYS
Alt+C
Opens and closes the CPU Graph window
Alt+D
Opens and closes the Disk Graph window
Alt+R
Opens and closes the RAM Graph window
Alt+Z
Tile horizontal
Alt+V
Tile vertical
F3
Exit SPM/2 Graph