idlwave-init-rinfo-when-idle-after

idlwave-init-rinfo-when-idle-after is a variable defined in `idlwave.el'.
Its value is

10

Documentation:
Seconds of idle time before routine info is automatically initialized.
Initializing the routine info can take a long time, in particular if a
large number of library catalogs are involved. When Emacs is idle for
more than the number of seconds specified by this variable, it starts
the initialization. The process is split into five steps, in order to
keep work interruption as short as possible. If one of the steps
finishes, and no user input has arrived in the mean time, initialization
proceeds immediately to the next step. A good value for this variable
is about 1/3 of the time initialization take in your setup. So if you
have a fast machine and no problems with a slow network connection,
don't hesitate to set this to 2 seconds. A value of 0 means, don't
initialize automatically, but instead wait until routine information is
needed, and initialize then.

You can customize this variable.