I'm working on an io_uring binding for Java and one of my integration tests is failing. In this integration test, I'm writing large payloads (up to 10x1MB) to the same non-blocking socket using IORING_OP_WRITEV. The purpose of this test is to see if io_uring is going to asynchronously complete the request when the socket needs to send more data than it can send in 1 go. The strange thing is that the CQE indicates the request failed with an EAGAIN on Fedora 38 (Linux 5.16.12-200.fc35.x86_64). But on On Arch Linux (linux 6.3.2.arch1-1) the test runs perfectly fine. My question is under which condition an IORING_OP_WRITEV can fail with an EAGAIN. Regards, Peter
