fun-with-a-profiler-20040504

fun-with-a-profiler-20040504

fun with a profiler:  afs_RemoveVCB accounts for 20% of the total AFS
client CPU utilization, even under a moderate vcache turnover rate of
less than 10 new vcache's per second.

introduce a hash on the afs_cbr objects to speed this up.  if you are
seeing your AFS client being CPU-bound, e.g. on your web server, you
may want to try this.