On Fri, Oct 16, 2009 at 16:36, Tres Seaver <tsea...@palladion.com> wrote:
> [...]
> You might also look at "fixing" varnish:  I don't know of any valid
> reason for it to be using the "half-open" connection model to test that
> an HTTP-based backend is "up"

Going out on a limb here, but I think Varnish might be trying to save
on file-descriptors. It could be a while before a backend-server
answers and Varnish could have a large number of fds open on any given
time while talking to both clients and servers.
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