Read/write command buffer pool resource management using read-path prediction of future resources

A computer program for avoiding read and write data congestion in a system for executing write and read data commands, the computer program being stored on a machine readable medium and executable to perform acts comprising:

• temporarily storing write data to be sent to a peer device and read data received from the peer device in a shared read/write buffer pool of blocks;
• storing descriptor pointers to free blocks and blocks filled with read data in the shared read/write buffer pool in a receive list memory;
• storing descriptor pointers to free blocks and blocks filled with write data in the shared read/write buffer pool in a transmit list memory;
• and
• preventing an initiation of a new write data command until pending read data requests have been processed enough to free up sufficient blocks in the buffer pool to accommodate the data of the new write data command by
• determining a number of blocks in the shared read/write buffer pool that will be required to store the read or write data for the pending read data requests and the new write data command,
• determining a number of free blocks in the shared read/write buffer pool, and
• throttling the new write data command if the number of free blocks in the shared read/write buffer pool is insufficient to store the read data for the pending read data requests and the write data for the new write data command.

A method for avoiding read and write data congestion in a system for executing write and read data commands, the method comprising:

• temporarily storing write data to be sent to a peer device and read data received from the peer device in a shared red/write buffer pool of blocks;
• storing descriptor pointers to free blocks and blocks filled with read data in the shared read/write buffer pool in a receive list memory;
• storing descriptor pointers to free blocks and blocks filled with write data in the shared read/write buffer pool in a transmit list memory;
• and
• preventing an initiation of a new write data command until pending read data requests have been processed enough to free up sufficient blocks in the buffer pool to accommodate the data of the new write data command by
• determining a number of blocks in the shared read/write buffer pool that will be required to store the read or write data for the pending read data requests and the new write data command,
• determining a number of free blocks in the shared read/write buffer pool, and
• throttling the new write data command if the number of free blocks in the shared read/write buffer pool is insufficient to store the read data for the pending read data requests and the write data for the new write data command.