gvstat tool to monitor database performance and tune performance

[ksbhaskar]

Final Release Note

Description

gvstat is a useful tool for logging database fileheader statistics accessible using $view("gblstat",region). mumps -run gvstat --help gives a full list of options as well as serves as a functional specification. It is currently a personal tool, but it is untested (and it is indeed likely that not all the permutations and combinations of options necessarily work as specified). It should be made into a tested and supported tool.

Draft Release Note