Xerox DocuPrint 92C Installation Planning Manual

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Xerox DocuPrint 92C Installation Planning Manual Manual pdf 148 page image

DEFINING THE PRINTER TO THE HOST: TCP/IP ATTACHMENTE-34 XEROX DOCUPRINT 92C IPS INSTALLATION PLANNING GUIDE• The OS/2 TCP/IP stack has been initialized (usually doneduring system bootup). The TCP/IP NETSTAT commandhas several options which may reveal network problems.• The OS/2 queue is not in a “Hold” state.• A data stream is arriving at the IPS. The IPS Printer ControlUnit status on the IPS user interface screen should go from“idle” to “receiving” during reception of the data stream. If itdoes not, verify that the correct IP address and TCP/IP PortNumber are specified to both PSF/2 and the printer.6. You may examine the contents of the spool queue by openingthe queue object on the OS/2 desktop. An entry should appearduring the execution of APRINT, then change to a status of“Printing” before disappearing from the queue.If OS/2 detects an error during printing, the entry is held in thequeue with an appropriate status indicating the error. If theentry never changes status to “Printing,” either the queue or theentry is in a “Hold” state, or OS/2 is unable to contact the printerto initiate printing.If the entry enters a “Printing” state then disappears, but nooutput was produced on the IPS printer, check to see if theoutput was printed elsewhere. This would indicate a definition ineither TCP/IP or PSF/2 that is incorrect, but still happens tomatch the device where the output appeared.Correcting for printer performance issues – OS/2Should you notice any printer performance problems—e.g.,throughput speed degradation, check the areas listed in the followingtable.Table E-28.Components to check for printer performanceproblems – OS/2OS/2 On the OS/2 system, a system-changeable priority controls theresources allocated to printing activities. By default this is set toa median value, representing the relatively low priority printinghas on a typical desktop system. In the case of a print server, itmay be appropriate to increase this value to favor printing overany other activities that may be going on. To change this setting:1. Select the OS/2 System folder from the OS/2 Desktop.2. Select the System Setup folder.3. Select the Spooler icon.4. Select the Print Priority tab from the Spooler Settingsdialog box.5. Print Priority values range from 1 to 189, with a default of95. Adjust the setting accordingly and close the Settingsdialog box.Overcommitment of memory can lead to severe reduction ofthroughput under OS/2. If there is excessive paging activity (tothe SWAPPER.DAT file) or the swap dataset becomes too large,consider increasing the physical memory on the print server.This often can lead to greater performance gains than, forexample, use of a faster processor.