1. A method for pre-fetching disassembly code comprising: receiving, from a remote computer system, a program code data set; receiving user input including a first breakpoint address; pre-fetching a first disassembly code segment, from the remote computer system running an application under test, based at least in part on the program code data set, and further based at least in part on the first breakpoint address, to produce a pre-fetched first disassembly code segment; storing the pre-fetched first disassembly code segment in a local computer system running a debug interface; receiving user input including a second breakpoint address; pre-fetching a second disassembly code segment, from the remote computer system running the application under test, based at least in part on the program code data set, and further based at least in part on the second breakpoint address to produce a pre-fetched second disassembly code segment; receiving information indicating that execution of the program code data set has reached the first breakpoint address; in response to receiving information indicating that execution of the program code data set has reached the first breakpoint address, sending to the local computer system running a debug interface, the pre-fetched first disassembly code segment; determining that the pre-fetched second disassembly code segment overlaps the pre-fetched first disassembly code segment; in response to determining that the pre-fetched second disassembly code segment overlaps the pre-fetched first disassembly code segment, merging the pre-fetched second disassembly code segment with the pre-fetched first disassembly code segment to create a merged disassembly code segment; receiving information indicating that execution of the program code data set has reached the second breakpoint address; and in response to receiving information indicating that execution of the program code data set has reached the second breakpoint address, sending to the local computer system running the debug interface, the merged disassembly code segment.