On 2/1/25 8:30 AM, Max Kellermann wrote: > On Sat, Feb 1, 2025 at 4:26 PM Jens Axboe <axboe@xxxxxxxxx> wrote: >>> Not a huge fan of adding more epoll logic to io_uring, but you are right >>> this case may indeed make sense as it allows you to integrate better >>> that way in existing event loops. I'll take a look. >> >> Here's a series doing that: >> >> https://git.kernel.dk/cgit/linux/log/?h=io_uring-epoll-wait >> >> Could actually work pretty well - the last patch adds multishot support >> as well, which means we can avoid the write lock dance for repeated >> triggers of this epoll event. That should actually end up being more >> efficient than regular epoll_wait(2). > > Nice, thanks Jens! I will integrate this in our I/O event loop and > test it next week. This will eliminate the io_uring poll wakeup > overhead completely. That'd be great, let us know how it goes! -- Jens Axboe
