i.MX8M Mini console hang with stress-ng

[m_c]

Customer use prebuilt image Linux 5.4.3 test with stress-ng.

No issue with:
taskset 0x1 stress-ng --cpu 4 --io 1 &
taskset 0x1 stress-ng --cpu 4 --io 1 &

Console hang with:
taskset 0x1 stress-ng --cpu 4 --io 1 &
taskset 0x2 stress-ng --cpu 4 --io 1 &

The UART console can keep output with top command after input above two test commands.

But when press 'q' to leave top, then can't input any command in UART console.

Linux system didn't hang, because plug in/out Ethernet, console will print related message.

[igorpadykov]

Hi m.c.

customer can try:

- use command (like stress-ng --taskset 0,2-3 --cpu 3) for running test on several

cpus as suggested on stress-ng tutorial:

Ubuntu Manpage: stress-ng - a tool to load and stress a computer system 

- add stress-ng sources to nxp linux and rebuild all image from scratch

linux-imx - i.MX Linux kernel 

GitHub - ColinIanKing/stress-ng: This is a mirror of the upstream project at https://kernel.ubuntu.c... Best regards

igor
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[m_c]

Thanks, will try.