Increased computer peripheral throughput by using data available withholding

A computer system comprising:

• first and second interconnected groups, each groups having one or more processors;
• a peripheral device associated with one of the groups and capable of initiating first and second data writes producing first and second write data, respectively,
• a queue capable of sequentially ordering the data writes;
• a completion indicator of the first data write, said indicator being responsive to the first write data;
• a sequencer responsive to the first and the second write data and capable of tracking overlapping of the first and the second write data;
• storage for the first and second write data;
• and output for the first and second write data responsive to the sequencer and the completion indicator,
• wherein the storage for the second write data is capable of accepting the second write data before completion of the first data write;
• and wherein the output for the second write data is capable of outputting the second write data only after completion of the first data write.