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Bill Paul a169c9b1f9 NIS client-side performance tweak:
Each of the ypclnt functions does a _yp_dobind() when it starts and then
a _yp_unbind() when it finishes. This is not strictly necessary and it
wastes cycles: it means we do a new clnt_create() and clnt_destroy()
for each yp_whatever() call. In fact, you can do multiple clnt_call()s
using a single RPC client handle returned by clnt_create(). Ideally we only
have to create a handle to ypserv once (the first time we call a ypclnt
function) and then destroy it and rebind only if a call to ypserv fails.

- Modify _yp_dobind() so that it only creates a new RPC client handle
  when establishing a new binding or when one of the ypclnt calls
  invalidates an existing binding and calls _yp_dobind() to establish
  a new one.

- Modify the various ypclnt functions to only call _yp_unbind() if a
  call to ypserv fails.
1996-05-02 15:44:53 +00:00
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