BSlib, PVSlib and client_stats are all no used. Should be removed completely next release Get rid of PVS server stuff in the IOC. Replace it with RPC/XDR. The PVS server is a simple TCP server that runs on the IOC, it is used to retreive information from the IOC such as: list of records in the IOC, CA client stat information, memory usage. The code for this system is in base/src/dbtools, the files that have the code for the IOC (vxWorks) portion are PVSserver.c PVSvx.c vx_stats.c and client_stats.c. The workstation client programs are rdbls.c rdbapplist.c ioc_stats.c. The files BSlib.c and BSlib.h are used to do the networking calls for the above programs. This entire system should be ripped out and replaced by a simple RPC/XDR program.