Problem with origin server connections

Hi,

Brian and I have been trying to puzzle out a problem we are having
related to back end origin server connections initiated by squid. We
have squid (2.5.stable1) set up in a reverse proxy configuration
pointing at a group of origin servers which mount a number of NFS mounts
to serve content from. What we are seeing is that when one of those NFS
mount points locks up on the origin server, it will cause a seemingly
permanent change to the number of connections and back end refreshes
that the squid servers are sending to the origins. Restarting the squid
listeners fixes it, but if we do not restart them, the number of
connections and refreshes never returns to its normal state. This is
true even if the NFS mount point comes back and the origin servers are
restarted.

I have seen this go on for over a day, when all of our timeouts are set
in minutes and seconds not hours or days. I am curious to know why this
behavior exists, and if there is anything that could be done about it?
I am asking here rather than the squid user list, because I think it may
be something fundamental to the way squid works and not a configuration
issue.

-- 
David Nicklay
Location: CNN Center - SE0811A
Office: 404-827-2698	Cell: 404-545-6218