Messages in this thread | | | Date | Fri, 10 Mar 2023 13:38:20 -0700 | Subject | Re: [PATCH] io_uring: One wqe per wq | From | Jens Axboe <> |
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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
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