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HP OpenVMS Systems Documentation |
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HP OpenVMS System Management Utilities Reference Manual
This example shows the bar graph style format for the SYSTEM display.
MONITOR TIMER
The MONITOR TIMER command initiates monitoring of the TIMER statistics class, which is the rate of processing Timer Queue Entries (TQEs) by the OpenVMS executive. A TQE is a data structure representing a timer request made by a user or by the system. FormatMONITOR TIMER Command Qualifiers
Classname Qualifiers
DescriptionThe TIMER class consists of the following data items, which are displayed as rates of occurrences per second:
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MONITOR> MONITOR TIMER
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This example shows a relatively low over-all level of TQE processing, most of which has been requested by OpenVMS. Note that the last three rates approximately total the first rate.
The MONITOR TRANSACTION command initiates monitoring of the TRANSACTION class, which shows information about transactions coordinated by DECdtm services.
MONITOR TRANSACTION
/qualifier[,...]
One or more qualifiers as described in the Command Qualifier Descriptions section.
/ALL
Specifies that a table of all available statistics (current, average, minimum, and maximum) is to be included in the display and summary output. For summary output, this qualifier is the default for all classes; otherwise, it is the default for all classes except CLUSTER, MODES, PROCESSES, STATES, SYSTEM, and VECTOR./AVERAGE
Specifies that a bar graph of average statistics is to be included in the display and summary outputs./CURRENT
Specifies that a bar graph of current statistics is to be included in the display and summary outputs. The /CURRENT qualifier is the default for the CLUSTER, MODES, STATES, SYSTEM, and VECTOR classes./MAXIMUM
Specifies that a bar graph of maximum statistics is to be included in the display and summary outputs./MINIMUM
Specifies that a bar graph of minimum statistics is to be included in the display and summary outputs.
The TRANSACTION class consists of the following data items:
Data Item Description Start Rate The rate at which new transactions are started on the local node. Prepare Rate The rate at which transactions on the local node are placed in the Prepared state by DECdtm services. One-Phase Commit Rate The rate at which transactions on the local node complete using the one-phase commit operation. This operation, which consumes significantly fewer system resources, is used when there is only a single resource manager participating in the transaction. Total Commit Rate The rate at which transactions on the local node are committed. This value is the combined total of one-phase and two-phase commit transactions. Abort Rate The rate at which transactions on the local node are aborted. End Rate The rate at which transactions that were started on the local node are committed. Remote Start Rate The rate at which transaction branches are started on the local node. Remote Add Rate The rate at which transaction branches are added on the local node. Completion Rate The rate at which transactions complete, indexed by their duration in seconds. The following list shows the Completion Rate categories:
Completion Rate 0--1 The number of transactions completed in 0--1 seconds (1 second or less) Completion Rate 1--2 The number of transactions completed in 1--2 seconds Completion Rate 2--3 The number of transactions completed in 2--3 seconds Completion Rate 3--4 The number of transactions completed in 3--4 seconds Completion Rate 4--5 The number of transactions completed in 4--5 seconds Completion Rate 5+ The number of transactions that took more than 5 seconds to complete For example, a transaction that completes in 0.5 second is included in the statistics displayed for the Completion Rate 0--1 category.
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MONITOR> MONITOR TRANSACTION/ALL
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This example shows the status of all transactions on node SAMPLE.
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MONITOR> MONITOR TRANSACTION/MAXIMUM
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This example shows the maximum statistics of all transactions on node SAMPLE.
On VAX systems, the MONITOR VBS command displays information about the processing of virtual balance slots (VBS).
MONITOR VBS
The MONITOR VBS command includes the following data items:
Data Item Description RBS Fault Rate Rate at which processes fault from virtual balance slots into real balance slots (RBS) CPU Utilization Amount of CPU time used by the operating system to support the virtual balance slot feature (at a rate of 10-millisecond clock ticks per second) To see which processes have the highest RBS fault rates, issue the MONITOR PROCESSES/TOPRBS command.
MONITOR> MONITOR VBS
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This example shows the tabular style format for the VBS display.
The MONITOR VECTOR command displays the number of 10-millisecond clock ticks per second in which one or more vector consumers have been scheduled on each currently configured vector processor in the system.
MONITOR VECTOR
/qualifier[,...]
One or more qualifiers as described in the Command Qualifier Descriptions section.
/ALL
Specifies that a table of all available statistics (current, average, minimum, and maximum) is to be included in the display and summary output. For summary output, this qualifier is the default for all classes; otherwise, it is the default for all classes except CLUSTER, MODES, PROCESSES, STATES, SYSTEM, and VECTOR./AVERAGE
Specifies that a bar graph of average statistics is to be included in the display and summary outputs./CURRENT
Specifies that a bar graph of current statistics is to be included in the display and summary outputs. The /CURRENT qualifier is the default for the CLUSTER, MODES, STATES, SYSTEM, and VECTOR classes./MAXIMUM
Specifies that a bar graph of maximum statistics is to be included in the display and summary outputs./MINIMUM
Specifies that a bar graph of minimum statistics is to be included in the display and summary outputs.
The MONITOR VECTOR command displays the number of 10-millisecond clock ticks per second in which one or more vector consumers have been scheduled on each currently configured vector processor in the system. Because the operating system schedules vector consumers only on those processors identified as "vector present," the VECTOR class output never displays vector CPU time for those processors that are "vector absent."Note that, because vector consumers can use either the vector CPU, the scalar CPU, or both components of a vector-present processor, the vector CPU time in the VECTOR class display is not a strict measure of the actual usage of the processor's vector CPU component. Rather, it indicates the time during which a scheduled vector consumer has reserved both vector CPU and scalar CPU components of the vector-present processor for its own exclusive use.
The VECTOR class consists of the data item Vector Scheduled Rate, which is represented by a display of statistics that show the rates of 10-millisecond clock ticks per second during which vector consumers have been scheduled on each vector-present CPU.
MONITOR> MONITOR VECTOR
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This example shows the VECTOR class display for a multiprocessing system containing two vector-present processors, CPU 0 and CPU 4. Displayed statistics represent rates of 10-millisecond clock ticks per second. For an average of 13 ticks per second over the last collection interval, vector consumers have been scheduled on CPU 0. For an average of 58 ticks per second over the last collection interval, vector consumers have been scheduled on CPU 4.
The SET DEFAULT command sets command qualifier, classname parameter, and classname qualifier defaults for the MONITOR command. Each SET DEFAULT command sets only the command qualifiers you specify, but replaces the entire set of classname parameters and classname qualifiers. All qualifiers and class names are identical to those for the MONITOR command.
SET DEFAULT [/qualifier[,...]] classname[,...] [/qualifier[,...]]
classname[,...]
Specifies one or more class names.
/qualifier[,...]
One or more command qualifiers as described in the Command Qualifier Descriptions section.
/qualifier[,...]
One or more classname qualifiers.
Command and classname qualifiers are identical to those for the MONITOR classname commands.
MONITOR> SET DEFAULT /INTERVAL=10 PAGE/AVERAGE+IO/MAXIMUM /NODE=(LARRY,MOE,CURLEY)
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The command in this example selects PAGE and IO as the default classes for the MONITOR command and specifies an interval of 10 seconds for the statistics display. The command specifies that AVERAGE statistics be displayed for the PAGE class, and that MAXIMUM statistics be displayed for the IO class. Finally, the command requests that data be collected on nodes LARRY, MOE, and CURLEY. After establishing these defaults, you can enter the MONITOR command without any qualifiers or parameters to display the requested information.
The SHOW DEFAULT command displays the defaults established by the SET DEFAULT command.
SHOW DEFAULT
None.
None.
The SHOW DEFAULT command verifies the defaults you have set with the SET DEFAULT command.
MONITOR> SHOW DEFAULT
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The command in this example displays the defaults specified by the previous SET DEFAULT command.
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