Abstract: A method and a device for file transfer protocol (FTP) deadlock detection and self recovery are provided by the disclosure in order to solve the sudden deadlock problem in the FTP upload task. The method includes: if a daemon determines that a deadlock occurs in an FTP upload task by a heartbeat detection mechanism, the socket resources used by the FTP upload task is recorded at the storage location in a socket resource cycle queue, and a process of ending the FTP upload task is started; determining whether the socket resource cycle queue is full, if it is not full, the socket resources used by the FTP upload task in the current deadlock is put into the socket resource cycle queue, otherwise, the earliest socket resources in the socket resource cycle queue are released, and the socket resources used by the FTP upload task in the current deadlock is put into the socket resource cycle queue.

Abstract: A self-service transaction automatic optimization service control system is provided, which includes a time-slicing service mode generating module, a service interrupting signal generating module and a self-service terminal control module. Wherein, the time-slicing service mode generating module is configured to detect the current user queue of the self-service terminal and identify whether the user queue is in a long queue state, convert the self-service terminal from a general service mode to a time-slicing service mode if the user queue is in a long queue state, otherwise maintain the self-service terminal maintain in the general service mode, wherein the time-slicing service mode provides business service of specific time or specific number of times to the user currently in operation of the self-service terminal.

Abstract: A method and a device for file transfer protocol (FTP) deadlock detection and self recovery are provided by the disclosure in order to solve the sudden deadlock problem in the FTP upload operation. The method includes: if a daemon determines that a deadlock occurs in an FTP upload task by a heartbeat detection mechanism, the socket resources used by the FTP upload operation is recorded at the storage location in a socket resource cycle queue, and an FTP upload task end process is started; determining whether the socket resource cycle queue is full, if it is not full, the socket resource information occupied by the current deadlock is put into the socket resource cycle queue, otherwise, the earliest socket resources in the socket resource cycle queue are released, and the socket resource information occupied by the current deadlock is put into the socket resource cycle queue.