Performance
Linux
sendfile() Promises Zero-Copy. Which Copies Does It Actually Remove?
sendfile() is marketed as zero-copy, but data still moves. See which two CPU copies the read()+write() path really …
Linux
Why Fewer Syscalls Don't Make io_uring Faster Than epoll
io_uring can reduce system calls without improving throughput or tail latency. Compare its completion model, batching, …