Data processing system and method of operating the same

A method of operating a data processing system including a host and an associated memory device, the method comprising

• classifying a first process having priority over other processes as a non-critical process, converting first data for performing the first process into pieces of unit data, and transmitting some of the pieces of unit data to the memory device through a first queue area, using a kernel area that defines the host;
• when a second process having priority over processes other than the first process is classified as a critical process, re-classifying the first process as a critical process in the kernel area;
• and
• transmitting remaining pieces of unit data to the memory device through a second queue area.

A data processing system comprising:

• a host including a kernel area and an application area;
• and
• a memory system;
• the host being configured to transmit process information, generated in the application area, and indicating that a first process is classified as one of a critical process and a non-critical process to the kernel area;
• the host being configured to, when the first process is classified as a critical process based on the process information, provide a first fastpath write signal, from the kernel area, to the memory system to perform a fastpath write operation of first data for performing the first process;
• and
• the host being configured to, when the first process is classified as a non-critical process, provide a first slowpath write signal, from the kernel area, to the memory system to perform a slowpath write operation of the first data;
• wherein the fastpath write operation has a higher write speed than the slowpath write operation.