IIntStudy

Interrupt-Related Interference Study | Benchmarks, Measurements and Scripts Repository

This repository is organized as follows:

Measurement

This folder contains the measurements used in our publication. Each CSV is extracted from raw binaries using the extraction scripts in the Scripts folder.

Each measurement should be organized with the following hierarchy:

Measurements
├── MITIGATION-NAME_mitig
| ├── [SC/MC]_[INT-TYPE]_[INT_RATE]
| | ├── [INT-TYPE / PART]_outpout.csv
| ├── Baseline

MITIGATION-NAME refers to the memory configuration name used to mitigate interrupt interferences.

[SC/MC] should be set to tell if the measurements were done on a single core (SC) or multicore (MC) environment.

[INT-TYPE/PART] defines the interrupt type that was measured. Any values are possible, however, in our study we use the following: INT, EXT, IPI, SC. PART is used to define the measurements done on the partitions.

Baseline are the partition measurements done without any interrupt during the execution.

Results

This folder contains the Excel sheet used to compile and study the measurements. This file also contains the macro (script) used to classify and rank the different memory configurations.

RTOS_Benchmark

This folder contains the benchmark framework as well as examples for an applicative partition and a system call generator partition.

• Example_applicativePartition.c contains the code used for an ARINC-653 partition executing an empty benchmark routine.
• Example_SysCallPartition.c provides the code for a system call generator that raises a system call every 0.5ms on the T2080 NXP platform.
• InterruptBench.h contains the API provided by the benchmark framework.
• OSAbstraction.h contains the RTOS abstraction used to generate and handle interrupts. This file must be updated for the platform the user targets.
• PMCDriver.h is a Performance Monitoring Counters driver used by the benchmarks suite. The file provides the required API and should be modified to adapt to the targeted platform.

Scripts

This folder gathers the scripts we used to extract the raw data to CSV files and to display the extracted data.

Additional Information

This study was conduced by the HEL laboratory at Polytechnique Montréal, QC, Canada in partnership with MANNARINO System & Software, QC, Canada.