100 \s+2Interim Report on Operating Systems Research in the Berkeley UNIX Project\s-2 July 1, 1989 - September 30, 1989 Susan L. Graham Domenico Ferrari Marshall Kirk McKusick Michael J. Karels Keith Sklower

0 .pp During this period we completed the interface between ISODE and the 4.4BSD socket interface and subjected it to testing over a local ethernet. We included changes for P1003.1 compliance in the tty specific parts of the Virtual Terminal applications. .pp We assisted in the constructions of an SNMP agent for monitoring OSI parameters in addition to TCP parameters. .pp Bugs were discovered and fixed concerning proper encoding of moderate sized packets over 802.2/3, and a performance problem resulting from ``silly window syndrome'' between the Kernel socket layer, and the Wisconsin transport provider was identified. .pp We released copies of this version of the software to Dec, HP, Cray, NIST, Wisconsin, & Mitre for further study and testing. .pp Berkeley continued to participate in the IEEE P1003 standards committees (Posix), and the IETF OSI working group. .pp The implementation of NFS was completed and put into limited use in our development environment. Rick Macklem spent the last half of August at Berkeley working on NFS performance with CSRG. .pp The POSIX signal interface was implemented and deployed on our development machine.