Tool for testing vrele patches to kernel.

To test you must have a quiet environment which means you
must comment out crontab entries and kill deamons like
sendmail all of which can bump the vnode statistics in the
kernel.

To build do ..

cc testvn.c fstest.c -o testvn -lkvm

To test do ..

mkdir testdir
./testvn testdir > test.nopatch 

Reboot with a patched kernel and do the tests again and then
compare output.

This tool was derived from testset by Terry Lambert and from
systat/vmstat by Robert Elz.