Bidirectional transmission method and system for bulk data in node

The invention discloses a bidirectional transmission method and a bidirectional transmission system for bulk data in a node. The bidirectional transmission method comprises the steps of: establishinga kernel mode and user mode shared memory mechanism, and dividing description items and page items, which are equal in number and are mapped one by one, in a shared memory region; and establishing a bulk data storage unit page number exchange mechanism so as to perform bidirectional transmission of bulk data in the node based on the description items and the page items. According to the bidirectional transmission method, zero-copy two-way transmission of bulk data in the server storage node is achieved, the whole path from network data reception, kernel mode or user mode multi-thread processing to network transmission is zero-copy, and zero-mutual exclusion operation of bulk data memory resources between multiple processes of the kernel mode and the user mode is achieved; and the throughput of node data transmissi