METHOD FOR MEASURING REAL-TIME PERFORMANCE IN LINUX-BASED EMBEDDED SYSTEM AND THE SYSTEM

摘要

PURPOSE: it is a kind of measurement the embedded system based on linux real-time performance be provided to accurately measure delay time carry out performance measurement time in real time because utilize hardware system count value. ;CONSTITUTION: a kind of measurement includes: that a kind of RTC (Real-Time clocks) (336) generates and periodically interrupts in the real-time performance of the embedded system based on linux; Interrupt handling routine (310) is received to interrupt from above-mentioned RTC, and record system counter value interrupts as interruption generation time value and receives timing, and wakes up corresponding tasks interrupt; Scheduler (320) is dispatched, preferentially to guide task that there is first priority to be waken up in task; Calculate the time of preemption delay in real time with device for measuring properties. ;The 2012 of copyright KIPO submissions