Hello, Michal. You mentioned somewhere in the thread to show figures regarding hitting a fast path and "fallback one". We follow fallback when a page allocation fails.
Please see below the plot. I hope it is easy to understand: wget ftp://vps418301.ovh.net/incoming/1000000_kfree_rcu_fast_hit_vs_fallback_hit.png to summarize. When i tight loop is applied, i.e. flood simulation the fallback hit is negligible. It is a noise, out of 1 000 000 we have 1% or %2 of fallback hitting. Thanks! -- Vlad Rezki
