Test proposal
The following document describes the test cases which must meet the following objectives:
- Ensuring the hardware meets the required performance for substation grade protection regarding latency, jitter, interoperability and reliability
- Ensuring the software platform meets the required performance for substation grade protection regarding latency, jitter, interoperability and reliability
- Provide system characteristics/benchmarks
- Provide indications on scalability
seapath.pptx
Documentation
The documentation is available directly on github.
Here is the main documentation to build a SEAPATH image: https://github.com/seapath/yocto-bsp/blob/master/README.adoc
Build machine
The Yocto project requires a powerful Linux based machine.
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| CPU | AMD RYZEN 9 3900X WRAITH PRISM LED RGB (3.8 GHZ / 4.6 GHZ) |
| Cooling | NOCTUA NH-U14S |
| MotherBoard | ASUS PRIME X570-P |
| Chipset | Intel C612 |
| PowerSupply | SEASONIC PRIME ULTRA 650 W GOLD |
| RAM | G.SKILL FLARE X SERIES 32 GO (2 X 16 GO) DDR4 3200 MHZ CL14 |
| SSD (SATA) | SAMSUNG SSD 860 EVO 500 GO |
| SSD (NVME) | CORSAIR FORCE MP600 1 TO |
| GPU | ASUS RADEON R7 240 R7240-2GD3-L |
| Case | PHANTEKS ENTHOO PRO |
Tips for building
- About 250GB is needed for building SEAPATH.
- A USB attached storage may be too slow to be practical for a successful build.
- Ensure you use an ext 2/ ext3 / ext4 filesystem for the build directory. NTFS will not work.
- Watch out with only manually deleting the /tmp/work directory. Instead delete the whole tmp directory.
- When deleting the tmp, it may take a very long time, and might cause
rm -rfto fail with an error.find . -deletewill work better, as it will not try to index all files before deleting them.
Test Bench/Reference hardware
This is the reference hardware for the Seapath project and supported out of the box. It might cost significant time to support other hardware (e.g. AMD processors). Some integration is available with a dedicated Yocto layer: https://git.yoctoproject.org/cgit/cgit.cgi/meta-amd/
Specification
| Parts | Specifications |
|---|---|
| Motherboard | ASMB‐823 |
| Chipset | Intel C612 |
| CPU | XEON 2.4G 35M 2011P 14CORE E5‐2680V4 |
| Memory | 2x 8G R‐DDR4‐2400 1.2V1GX8 HYX |
| Disk | SQF 2.5 SATA SSD 830 512G MLC (‐40~85°C) |
| NIC | INTEL I210 NIC 10/100/1000M PCIEx4 2PORT(G) |
Tests results
Real time
Tests
With the previous test bench hardware, a couple of tests were used.
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- we used the same arguments than used by OSADL (https://www.osadl.org/Latency-plots.latency-plots.0.html)
- We created a script to plot the latency graph as done by OSADL
Results
Hypervisors
- With Kernel RT Full Preempt (CONFIG_PREEMPT_RT_FULL=y)
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- Without Kernel RT Full Preempt (CONFIG_PREEMPT_NONE=y)
Virtual machines
All Yocto images include the ability to run guest Virtual Machines (VMs).
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| Code Block | ||
|---|---|---|
| ||
qemu-system-x86_64 -accel kvm -kernel bzImage -m 4096 -hda seapath-test-image-votp.ext4 -nographic -append 'root=/dev/sda console=ttyS0' |
Docker
You can use docker check-config.sh to check that all necessary configurations of the host linux Kernel are set:
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