On Wed, 19 Dec 2007, David G Lawrence wrote:
Try it with "find / -type f >/dev/null" to duplicate the problem almost
instantly.
FreeBSD used to have some code that would cause vnodes with no cached
pages to be recycled quickly (which would have made a simple find
ineffective without reading the files at least a little bit). I guess
that got removed when the size of the vnode pool was dramatically
increased.
It might still. The data should be cached somewhere, but caching it
in both the buffer cache/VMIO and the vnode/inode is wasteful.
I may have been only caching vnodes for directories. I switched to
using a find or a tar on /home/ncvs/ports since that has a very high
density of directories.
Bruce
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