QMS 2025, Administrator'S Manual

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Memory Clients
QMS 3825/3225/2025 System Administrator’s Guide 7-10
Increasing an interface’s Min K Spool value subtracts from memory
available for other purposes. For example, setting the serial interface
Min K Spool to 20 KB takes an additional 5 KB away from the avail-
able memory. Increasing an interface’s dedicated spooling memory
does not change the interface’s priority. All jobs received by the
printer are handled on a first-come, first-served basis, regardless of
the interface receiving the jobs.
If you do not use one or more of the printer interface connections, you
may disable that interface. Any disabled interface’s Min K Spool area
(15 KB) is added to the excess memory in the Display List. Each
interface submenu has a mode setting that allows you to disable it.
PS Heap
Also known as K Mem PS Heap, PostScript VM, and Virtual Memory,
this client holds downloaded fonts, PostScript operators, and forms.
Inefficiently coded PostScript jobs can consume an infinite amount of
virtual memory or leave objects in the PS (PostScript) heap after the
print jobs are completed, leading to virtual memory errors. If not
enough memory is allocated to the PS heap, the job cannot print.
Increasing the memory allocated to this client allows more complex
jobs to print and increases the number of fonts that can be down-
loaded to virtual memory. However, this client should be increased
only if you receive a virtual memory error when attempting to print a
job or download a font and only in small increments until the error
message goes away. Excess memory in the PS heap is not used. The
system will not allow you to set this memory client too low. The maxi-
mum setting is 99999. The default is Variable.
PostScript Font Cache
Also known as K Mem PS Fonts and Font Cache, this memory client
stores bitmapped representations of previously scaled PostScript
fonts. This process reduces the number of times a font must be con-
verted from outline form to bitmap form. Printing pages that have
characters already stored in the font cache is much faster than print-
ing characters not yet in the font cache.