IBM 1130 User Manual page 657

THE HOLE OF THE PHOGHAMMEH
In
reading the preceding subsection, you may have
got the idea that the 1130 Monitor has the major ef-
fect
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the performance of your programs and that
you do not enter the picture unless the "system
overlay scheme" fails to squeeze your program into
core storage.
Nothing could be further from the truth. The
program the CLB was manipulating was, after
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all, planned, organized, and programmed by you,
not by the CLB.
Anyone of these three functions, if not
properly done, can force the CLB into building
an inefficient package - ... one that may take five
or ten times longer in execution than a similar (but
better planned) program doing the same job.
As mentioned earlier in this section there are
many things you can do to avoid such inefficiencies;
most of them are easy to understand, remember,
and implement.