On 3/10/23 1:11 PM, Breno Leitao wrote: > Right now io_wq allocates one io_wqe per NUMA node. As io_wq is now > bound to a task, the task basically uses only the NUMA local io_wqe, and > almost never changes NUMA nodes, thus, the other wqes are mostly > unused. What if the task gets migrated to a different node? Unless the task is pinned to a node/cpumask that is local to that node, it will move around freely. I'm not a huge fan of the per-node setup, but I think the reasonings given in this patch are a bit too vague and we need to go a bit deeper on what a better setup would look like. -- Jens Axboe
