Re: [PATCH 0/4] export/fuse: Add FUSE-over-io_uring for Storage Exports

[Brian Song <hibriansong@gmail.com>]

We used fio to test a 1 GB file under both traditional FUSE and
FUSE-over-io_uring modes. The experiments were conducted with the
following iodepth and numjobs configurations: 1-1, 64-1, 1-4, and 64-4,
with 70% read and 30% write, resulting in a total of eight test cases,
measuring both latency and throughput.

Test results:

https://gist.github.com/hibriansong/a4849903387b297516603e83b53bbde4




On 8/29/25 10:50 PM, Brian Song wrote:
> Hi all,
>
> This is a GSoC project. More details are available here:
> https://wiki.qemu.org/Google_Summer_of_Code_2025#FUSE-over-io_uring_exports
>
> This patch series includes:
> - Add a round-robin mechanism to distribute the kernel-required Ring
> Queues to FUSE Queues
> - Support multiple in-flight requests (multiple ring entries)
> - Add tests for FUSE-over-io_uring
>
> More detail in the v2 cover letter:
> https://lists.nongnu.org/archive/html/qemu-block/2025-08/msg00140.html
>
> And in the v1 cover letter:
> https://lists.nongnu.org/archive/html/qemu-block/2025-07/msg00280.html
>
>
> Brian Song (4):
>    export/fuse: add opt to enable FUSE-over-io_uring
>    export/fuse: process FUSE-over-io_uring requests
>    export/fuse: Safe termination for FUSE-uring
>    iotests: add tests for FUSE-over-io_uring
>
>   block/export/fuse.c                  | 838 +++++++++++++++++++++------
>   docs/tools/qemu-storage-daemon.rst   |  11 +-
>   qapi/block-export.json               |   5 +-
>   storage-daemon/qemu-storage-daemon.c |   1 +
>   tests/qemu-iotests/check             |   2 +
>   tests/qemu-iotests/common.rc         |  45 +-
>   util/fdmon-io_uring.c                |   5 +-
>   7 files changed, 717 insertions(+), 190 deletions(-)
>