Re: [RFC PATCH v3 0/3] introduce io_uring_cmd_import_fixed_vec

[Pavel Begunkov]

On 3/15/25 17:23, Sidong Yang wrote:
> This patche series introduce io_uring_cmd_import_vec. With this function,
> Multiple fixed buffer could be used in uring cmd. It's vectored version
> for io_uring_cmd_import_fixed(). Also this patch series includes a usage
> for new api for encoded read/write in btrfs by using uring cmd.
>
> There was approximately 10 percent of performance improvements through benchmark.
> The benchmark code is in
> https://github.com/SidongYang/btrfs-encoded-io-test/blob/main/main.c
>
> ./main -l
> Elapsed time: 0.598997 seconds
> ./main -l -f
> Elapsed time: 0.540332 seconds

It's probably precise, but it's usually hard to judge about
performance from such short runs. Mark, do we have some benchmark
for the io_uring cmd?

--
Pavel Begunkov