Editing Computer Systems Research Group (section)

==Innovations==

CSRG made significant innovations, advancing the state of the art and influencing the design of other operating systems. For example, the sockets API remains in use in many operating systems today.{{Citation needed|reason=besides BSD, sockets are used in MacOS/X, Linux, and MS-Windows. I would guess that they are present in mini and mainframe systems too. Regardless of what I know from experience, I don't have a source to offer. Hopefully someone can find a good one|date=April 2025}}

* The [[Berkeley Sockets]] [[API]] solved the problem of supporting multiple protocols (e.g. [[Xerox Network Systems|XNS]] and [[TCP/IP]]), and partially extended UNIX's "everything is a file" notion to these network protocols.

* The [[Unix File System|Berkeley Fast File System]] increased the block allocation size from 512 bytes to 4096 bytes (or larger), improving disk transfer performance, while also allowing "micro-blocks" as small as 128 bytes, which improved disk use.

* Job control signals allowed a user to suspend a job with a key-press (control-Z), and then continue running the job in the background under the [[C shell]].