CPU - Per Processor Detail (PI_CPUP)
- Organization of this page
Function
The CPU - Per Processor Detail (PI_CPUP) record stores the performance data per unit time on the processor usage. Every time performance data is collected, a record is created for each processor. This is a multi-instance record.
If you are collecting processor performance data from the results output by the sar command in the AIX environment, the displayed values will be for different fields. For details about the values displayed in the fields when collecting processor performance data from the results output by the sar command in the AIX environment, see 2.3.23 Monitoring processor performance based on results output by the sar command in an AIX environment.
- Note:
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If the DLPAR function of AIX, the vPars function of HP-UX, the DR function of Solaris, or the CPU hotplug function of Linux is used to modify a system resource while a PFM - Agent for Platform service is running, some types of performance data cannot be correctly collected. The table below shows the types of system resources that are affected and the actions that you can take to correctly display reports after the modification:
System resource type
Report type
Actions to be taken after modification
CPU
Real-time
Display the report again.
Historical
Specify the display period such that it does not include the date and time when the system resources were modified.
Fields other than those listed below are affected by a system resource modification:
• Interval (INTERVAL)
• Record Time (RECORD_TIME)
• Record Type (INPUT_RECORD_TYPE)
• Fields that are added only when data is recorded in the Store database
For details about modifying system resources, see Notes on performance information when modifying system resources in Notes on records.
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In AIX, when the Status field of CPU - Per Processor Detail (PI_CPUP) record is changed from operating CPU to non-operating, since the operation duration exists in between the collection interval, [Online] is displayed at the time of the next collection after the change. After that, if the CPU state is not changed, it is further displayed as [Offline] during next collection time.
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If you collect in a non-global zone environment of Solaris, the value of the Boot Time field might not be displayed correctly.
Display example: 1970 01 01 06:00:00
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Default values and values that can be specified
|
Item |
Default value |
Modifiable |
|---|---|---|
|
Collection Interval |
60 |
Yes |
|
Collection Offset# |
0 |
Yes |
|
Log |
No |
Yes |
|
LOGIF |
Blank |
Yes |
|
Over 10 Sec Collection Time |
Yes |
No |
|
Realtime Report Data Collection Mode |
Reschedule |
Yes |
- #
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A value between 0 and 32,767 seconds can be specified (a value within the range specified for Collection Interval). Use this item to distribute the collection load, because executing data collection all at once results in concentration of the processing workload. Note that the data collection duration to be recorded is the same as the Collection Interval, regardless of the value specified for Collection Offset.
When changing the Collection Offset value, specify a value that takes into account the impact of the collection processing load.
ODBC key fields
PI_CPUP_LOGICAL_PROCESSOR_ID
Lifetime
None
Record size
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Fixed portion: 681 bytes
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Variable portion: 376 bytes
Fields
|
PFM-View name (PFM-Manager name) |
Description |
Smry |
Format |
Delta |
Not sprtd in |
Data source |
|---|---|---|---|---|---|---|
|
Boot Time(SYSTEM_BOOT_TIME) |
The last boot time |
COPY |
time_t |
No |
-- |
-- |
|
CPU %(KERNELMODE_USERMODE_PERCENT) |
CPU usage per processor (%) |
% |
float |
No |
-- |
|
|
Context Switches(PROCESSOR_CONTEXT_SWITCHES) |
Number of times context switching was executed |
AVG |
ulong |
Yes |
HP-UX, Linux |
-- |
|
Context Switches/sec(PROCESSOR_CONTEXT_SWITCHES_PER_SECOND) |
Frequency at which context switching was executed (number of times per second) |
R |
float |
Yes |
HP-UX, Linux |
PROCESSOR_CONTEXT_SWITCHES ÷ INTERVAL |
|
Idle %(PROCESSOR_IDLE_PERCENT) |
Percentage of time the processor was idle (%) |
% |
float |
No |
-- |
|
|
Idle Time(PROCESSOR_IDLE_TIME) |
Time during which the processor was idle (seconds) |
AVG |
utime |
Yes |
-- |
-- |
|
Interrupts(PROCESSOR_INTERRUPTS) |
Number of interrupts that occurred |
AVG |
ulong |
Yes |
HP-UX, AIX |
-- |
|
Interrupts/sec(PROCESSOR_INTERRUPTS_PER_SECOND) |
Frequency at which interrupts occurred (number of times per second) |
R |
float |
Yes |
HP-UX, AIX |
PROCESSOR_INTERRUPTS / INTERVAL |
|
Interval(INTERVAL) |
Interval at which the CPU - Per Processor Detail (PI_CPUP) record was stored (seconds) |
COPY |
ulong |
Yes |
-- |
|
|
Processor ID(LOGICAL_PROCESSOR_ID) |
Processor identifier |
COPY |
string(12) |
No |
-- |
|
|
Record Time(RECORD_TIME) |
Time at which the record was created (Greenwich Mean Time) |
COPY |
time_t |
No |
-- |
-- |
|
Record Type(INPUT_RECORD_TYPE) |
Record type. Always CPUP. |
COPY |
char(8) |
No |
-- |
-- |
|
Status(PROCESSOR_STATUS) |
Processor status |
COPY |
string(12) |
No |
-- |
-- |
|
Sys Calls/sec(PROCESSOR_SYSTEM_CALLS_PER_SECOND) |
Frequency at which system calls were issued (number of system calls per second) |
R |
float |
Yes |
HP-UX, Linux |
PROCESSOR_SYSTEM_CALLS ÷ INTERVAL |
|
System %(PROCESSOR_SYSTEM_PERCENT) |
Percentage of time the system ran in the kernel mode (%) |
% |
float |
No |
-- |
|
|
System Calls(PROCESSOR_SYSTEM_CALLS) |
Number of system calls that were issued |
AVG |
ulong |
Yes |
HP-UX, Linux |
-- |
|
System Time(PROCESSOR_SYSTEM_TIME) |
Time during which the system ran in the kernel mode (seconds) |
AVG |
utime |
Yes |
-- |
-- |
|
Traps(PROCESSOR_TRAPS) |
Number of traps that were executed |
AVG |
ulong |
Yes |
HP-UX, AIX, Linux |
-- |
|
Traps/sec(PROCESSOR_TRAPS_PER_SECOND) |
Frequency at which traps were executed (number of traps per second) |
R |
float |
Yes |
HP-UX, AIX, Linux |
PROCESSOR_TRAPS ÷ INTERVAL |
|
Type(PROCESSOR_TYPE) |
Processor explanation |
COPY |
string(40) |
No |
-- |
-- |
|
Up Time(SYSTEM_UP_TIME) |
Time elapsed since the last boot (seconds) |
COPY |
string(20) |
No |
-- |
RECORD_TIME - SYSTEM_BOOT_TIME |
|
User %(PROCESSOR_USER_PERCENT) |
Percentage of time the processor ran in the user mode (%) |
% |
float |
No |
-- |
|
|
User Time(PROCESSOR_USER_TIME) |
Time during which the processor ran in the user mode (seconds) |
AVG |
utime |
Yes |
-- |
-- |
|
Wait %(PROCESSOR_WAIT_PERCENT) |
Percentage of time the processor was waiting for I/O (%) |
% |
float |
No |
Solaris |
|
|
Wait Time(PROCESSOR_WAIT_TIME) |
Time during which the processor was waiting for I/O (seconds) |
AVG |
utime |
Yes |
Solaris |
-- |
- Legend:
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Smry: Summary
Not sprtd in: Not supported in