On 2/14/20 6:25 PM, Carter Li 李通洲 wrote: > There are at least 2 benefits over POLL->READ > > 1. Reduce a little complexity of user code, and save lots of sqes. > 2. Better performance. Users can’t if an operation will block without > issuing an extra O_NONBLOCK syscall, which ends up with always using > POLL->READ link. If it’s handled by kernel, we may only poll when > we know it’s needed. Exactly, it'll enable the app to do read/recv or write/send without having to worry about anything, and it'll be as efficient as having it linked to a poll command. -- Jens Axboe
