> Do you mean the dentry table doesn't expand dynamically at this point?
No, dentries can expand dynamically without limit. But in order to
control the growth of both dentries and inodes, unused dentries are
incrementally reclaimed. When the system needs a new inode, it first
checks the unused inodes list, and if there aren't any, it shrinks a few
dentries to free up some inodes.
It's this process that needs tuning -- selecting which dentries and
inodes to free.
Regards,
Bill