Re: Using FIO on systems with <=512MB RAM

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I'm developing and maintaining web based gui for fio (w3top). And I can't confirm your concern.

On x64 linux, 380Mb of RAM is enough for both w3top systemd service and fio executable.

On ARM32 the w3top+fio pair needs about 300M of ram.

What engines do you use? I'm about libaio, posixaio, io_uring, sync*** and mmap v2.21 ... v3.28 on headless linux

2/21/2022 4:40 PM, Philippe Schenker пишет:
Hello

We use FIO to check the eMMC storage on our embedded boards. This works
great for our modules that have >= 1GB RAM but on all lower-memory ones
(<= 512MB) the OOM killer always kills FIO.

I can hook up a swap which helps but is just painfully slow.

I played with the settings mem, bs, iodepth and size but cannot achieve
a configuration that works on low-memory embedded systems.

Can anyone guide me how I can make this work?

Best Regards,
Philippe




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