Currently, the SUMA test-suite takes about 6 hours to complete, often fails in the first tests, which set up the environment for the rest of the tests, those tests are what we named "core features".

There are attempts to solve some kernel deadlock with using lockless printk ringbuffer. The proposed implementation is pretty complex (6 stages, 6 write and 6 read barriers, two buffers, entries linked via list, ...)