Network system, network node and communication system

US2015143384A Network system being configured to execute I/O commands and application commands in parallel and comprising a network and at least one network node, wherein the at least one network node is connected to the network via a network adapter and is configured to run several processes and/or threads in parallel, wherein the at least one network node comprises or is configured to establish a common communication channel (C-channel) to be used by the several processes and/or threads for data communication with the network via the network adapter, wherein the C-channel comprises or is established to comprise a work queue (WQ) for execution of I/O commands and a completion queue (CQ) for indication of a status of I/O commands, and wherein the at least one network node, especially its comprised or to be established C-channel, is configured for an exclusive access of precisely one single process or thread out of the several processes and/or threads to the CQ of the C-channel at a particular time.