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Timing channel benchmarking tool

This project provides an application that can be used to benchmark potential hardware timing channels and measure their bandwidth. Part of this project is a set of tools which are required to process the output of the benchmark and produce meaningful data.

Repository initialisation

This project is managed in the same manner as all other repositories. See the getting started page for more info.

To create a directory containing this project, execute the following commands. (Note that this project is currently under active development; use the timing.xml manifest as below to check out branches that provide development support for this project).

mkdir channel-bench
cd channel-bench
repo init -u https://github.com/SEL4PROJ/channel-bench-manifest.git -m timing.xml

Configuring and building

Once the project has been created, a project can be configured as follows:

cd channel-bench
mkdir build
cd build
../init-build.sh -DPLATFORM=<platform-name>

Configuration choices can then be made in the CMake menu using ccmake . from within the build directory.

Note: Only one benchmark kind should be configured at any time to ensure that results from different benchmarks are not mixed in the output.

Once the configuration is complete, ninja can be used to build an image.

Determining sane configurations may be difficult. To determine what combinations may be reasonable, check the projects/channel-bench/configs directory which contains configurations for our old build system. You should be able to ignore options that do not appear in the CMake menu.

Supported platforms and architectures

This project currently supports aarch32 with the sabre platform and x86 platforms.

Processing benchmark output

Processing benchmark output is done using the channel-bench-tools which will be in the repo project at tools/channel-bench.

Development support

This project is still under development and master is not stable. The timing channel in the following repositories reflects the ongoing development work to support this project.

Make sure that repo is initialised to use the timing.xml manifest to track these branches rather than their master master branches.

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