liburing

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Worker affinity does not work as expected with isolated CPUs

5

When setting affinity mask for worker threads (via `io_uring_register_iowq_aff`) to include isolated CPUs, they never seem to go to more than one isolated CPU, or any isolated CPUs at all,...

noop-dev

The performance difference between system write API and liburing API when writing small data.

28

Hi, I wrote one sample to test the performance of writing small data with liburing and the system write API, found that the system write API is much more faster...

zhengshuxin

Ability to pass file range to IORING_OP_FSYNC is undocumented

1

While looking through the implementation in the kernel, I noticed that the code [takes the `off` and `len` flags from the sqe](https://github.com/torvalds/linux/blob/c42d9eeef8e5ba9292eda36fd8e3c11f35ee065c/io_uring/sync.c#L64-L65), and [passes them to `vfs_fsync_range`](https://github.com/torvalds/linux/blob/c42d9eeef8e5ba9292eda36fd8e3c11f35ee065c/io_uring/sync.c#L73-L80). I'm not an...

RedBeard0531

Multishot recv cancel get different completion result depending on the kernel

3

While building [a test case](https://github.com/ianic/zig/blob/c76fed2a73175a32045fb714693181e3737049a9/lib/std/os/linux/io_uring.zig#L3957) for Zig io_uring implementation I noticed that I'm getting different results depending on the Linux kernel. In the test there is active multishot recv operation....

ianic

Header-only C++ compliant fork

14

For [my own web framework](https://github.com/the-moisrex/webpp), I needed to have header-only C++ compliant version of liburing, so I've forked it and did that. There are still some UBs and Compiler-Specific stuff...

the-moisrex

Too many worker threads created when setting cpu affinity of io worker

2

Hi, I have an application that creates io_uring instance and processes sq and cq on cpu0 (no sq thread nor io poll mode is enabled). The kernel I use is...

richael02

copy_file_range op?

6

There's splice but no copy_file_range. It'd be great to have.

SUPERCILEX

recvmsg returns EINVAL when trying to retrieve control message

4

I am trying to use `io_uring_prep_recvmsg`. I set up the `struct msghdr` correctly but always get an `EINVAL` return code. Excerpt from my setup: ``` ctx->iov.iov_base = reinterpret_cast(buf.data()), ctx->iov.iov_len =...

fabxc

The user of this library, if they're using flags like `-std=c17 -pedantic`, they need to also define `_POSIX_C_SOURCE` to at least `200809L` in order to get rid of these errors:...

the-moisrex

io_uring_prep_socket_direct -> bind -> listen -> io_uring_prep_accept_direct

2

https://github.com/axboe/liburing/issues/234#issuecomment-1241888695 why are bind and listen not async yet, can they access direct descriptor?

ghost