Q:
ABSTRACT: How can a PSF/6000 user dynamically balance printer
output between two 3935s currently attached?
ENVIRONMENT:
SEARCH ARG: psf/6000 workload balance
TOPIC THREAD: PRINT
AFP
PSF6000
..
How can a PSF/6000 user dynamically balance printer output between
two 3935s currently attached?
A:
You can do this by setting up two PSF/6000 queues, one for each
printer, and then by creating a single AIX queue to front-end the two
PSF/6000 queues.
1. Configure a PSF/6000 queue for the first 3935, e.g., p3935a, with
the default number of queue devices (four: dev1, dev2, dev3, dev4).
2. Configure a PSF/6000 queue for the second 3935, e.g., p3935b, also
with the default number of queue devices (four: dev1, dev2, dev3, dev4).
3. Create an AIX local queue (smit mklque). For this example, call it
3935q. So, the NAME of queue to add is 3935q. The default queuing
discipline is first come, first served, but you could change that to
shortest job next. For NAME of device to add, you can put in any name
you want (but only five characters will display on the status display).
For this example, I'm going to call this device "35a1". Then on the
BACKEND PROGRAM pathname (*not* the BACKEND OUTPUT FILE pathname¢):
/usr/lpp/psf/bin/ainbe p3935a
Accept the other defaults and press Enter to add the queue. This points
this queue device back to the first 3935.
4. Add a Device to an Existing Queue (smit mkquedev). For NAME of
device to add, I used "35b1". The QUEUE to which to attach the device
would be (and you can use F4 or LIST to select from a list) in this
case "3935q". This time, the BACKEND PROGRAM pathname would be:
/usr/lpp/psf/bin/ainbe p3935b
pointing to the second 3935.
Then, I would repeat #4 and add additional queue devices to 3935q, such
as 35a2 (pointing to p3825a), 35b2 (pointing to p3825b), then 35a3,
35b3, 35a4, and 35b4, so that you have the same number of queue
devices available here on the front-end as you have available for work
on the two 3935 PSF/6000 queues. You should alternate between adding
devices for p3825a and p3825b (rather than setting all the devices up
at one time for p3825a, and then all those for p3825b), because the
order in which you add them is the order in which they will appear in
/etc/qconfig and be used.
This does not automatically alternate between the two printers, but
rather should send it to the first idle printer, so in general, Printer
A will get more work than Printer B. I hope that helps.
S e a r c h - k e y w o r d s:
AIX PSF/6000 LOAD BALANCING WORKLOAD BALANCE SHARING psf psf/aix
leveling
WWQA: ITEM: RTA000087395 ITEM: RTA000087395
Dated: 03/1999 Category: XPSF6000
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