On Fri, Mar 14, 2025 at 10:12 AM Ming Lei <ming.lei@xxxxxxxxxx> wrote: > > Hello Jens, > > This patchset improves loop aio perf by using IOCB_NOWAIT for avoiding to queue aio > command to workqueue context, meantime refactor lo_rw_aio() a bit. > > In my test VM, loop disk perf becomes very close to perf of the backing block > device(nvme/mq virtio-scsi). > > And Mikulas verified that this way can improve 12jobs sequential rw io by > ~5X, and basically solve the reported problem together with loop MQ change. > > https://lore.kernel.org/linux-block/a8e5c76a-231f-07d1-a394-847de930f638@xxxxxxxxxx/ > > The loop MQ change will be posted as standalone patch, because it needs > losetup change. > > > Thanks, > Ming > > V2: > - patch style fix & cleanup (Christoph) > - fix randwrite perf regression on sparse backing file > - drop MQ change Hi Mikulas, Just realized that you are missing in Cc list and loop you in, sorry for that... Thanks,
