I recently just learned about this problem on linux, where if you copy files from an SSD to HDD (or from a fast to slow drive) the whole system hangs for short bursts, because of the dirty pages buffer thing. I’ve managed to resolve it with a custom BDI limit for my HDD. But one would assume that this issue shouldn’t happen with the default cachyos settings given that this is a performance focused distro. That’s why my question in the title. Also is the custom BDI limit the best solution for this in terms of performance?
By custom BDI limit I mean these commands:
echo 5 | sudo tee /sys/block/sdb/bdi/min_ratio
echo 20 | sudo tee /sys/block/sdb/bdi/max_ratio
echo 1 | sudo tee /sys/block/sdb/bdi/strict_limit