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Pamphlet U15763EJ5V0PF

SYSTEM PERFORMANCE ANALYZER

Quantitative Evaluation Index

In a system constructed using a design ➝ coding ➝ debugging process, tuning work is necessary to optimize

the CPU's performance and resources, and is used to assess the system performance and analyze its opera-

tion, through which system performance and product quality can be raised.

Tuning work usually involves checking the following operations and then analyzing the system's response per-

formance.

Operation check

◆ Intertask operation check

(Deadlock status, task run sequence, resource access

status)

◆ Internal task operation check

(System call/return value)

◆ Interrupt servicing operation check

(Occurrence frequency, nesting depth, servicing time,

enable/disable position)

Response Performance Analysis

◆ Adequacy of access division (task run time)

◆ Selection of optimal scheduling (task priority level)

◆ Optimal resource allocation (resource utilization efficiency, resource values)

Algorithms and the system configuration concept can be changed at the design stage, based on analysis

results. The tool that supports this kind of analysis and modification is the system performance analyzer (AZ).

This performance analyzer, operated in combination with one of a variety of debuggers, has the following functions.

◆ Detection of bugs caused by system timing misses

◆ Detection of problems caused by the simultaneous operation of multiple tasks

◆ Verification/analysis of real-time system execution performance

The system performance analyzer displays trace data visually and provides the following functions for software

operation control, thus facilitating task operation analysis.

◆ Detection of unnecessary system processing

◆ Support of source analysis

◆ Clarification of the system tuning index

Internal task operation check

Intertask operation check

Interrupt servicing

operation check

Interdevice I/O

processing check

External

source

Peripheral

device

Peripheral

device

Task Task

The following system performance analyzer is supported in the V850 Series.

AZ850: System performance analyzer for the V850 Series

The system performance analyzer visually displays records of executed tasks and RTOS resource ac-

cess data, thereby clarifying the task load status and making it easy to determine the tuning index.

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