Kevin Jin

I have the same issue. I can repeat the issue using fio with fsync. It consumes all the available memory and all the swap space. When it happens, it uses...

Potential fixes: #12284

If you could print out /proc/spl/kstat/zfs/arcstats when it happens, that will be great for debug.

You don't need a large size for slog devices. Usually, they don't grow beyond the maximum dirty data allowance. You can use partitions for slog instead of using whole drives.

Are you considering adding a slog device? Try to add one and see if it improves.

What if you test it with "fio" tool? Also make sure you don't use up all the memory when issue happens.