K 10
svn:author
V 7
davidxu
K 8
svn:date
V 27
2010-01-10T09:31:57.466707Z
K 7
svn:log
V 197
Make a chain be a list of queues, and make threads waiting
for same key coalesce to same queue, this makes searching
path shorter and improves performance.
Also fix comments about shared PI-mutex.

END