![[assets/wl_lw_aio_uringcompletion.png|256]] # AioUringCompletion (The Canister Lock) The Chef is currently grabbing a canister from the **[[Workloads/IO/AIO/_Aio|Pneumatic Tube]]** and needs an exclusive lock to empty it. This wait occurs when multiple elephants are trying to read the same arrived canisters at once.