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Chapter Five
AM-6060 Computer Owner's Manual, Rev. 00
The SETJOB statement can:
•
Define how much memory to allocate to a specific job.
•
Define the specific disk and account you want the specific job to log into each time the
computer boots.
•
Unlock the terminal’s keyboard (with the VER command).
Exactly what you want to put in the SETJOB statement depends on whether a terminal, modem,
or printer is attached to the port, and on many other considerations.
5. When you’ve modified the TRMDEF and/or SETJOB statements, you're ready to perform a test
reboot, using the procedure described earlier in this chapter.
For complete information about TRMDEF, SETJOB, and setting up jobs, please see the System
Operator's Guide to the System Initialization Command File.
Changing User Memory
In addition to the operating system itself, the memory of the AM-6060 is used by:
•
The serial ports
•
Background processes, such as the AlphaTCP server programs
•
People connecting to the computer over the network
The amount of memory for each serial port and background process is set in a SETJOB statement in the
initialization file (except for serial port 0, which usually receives all of the memory which is not used for
any other purpose). Each network user, however, may be able to request a specific amount of memory
when he or she connects to the computer (depending on the AlphaTCP configuration, network users may
be assigned a memory size automatically). So, rather than assigning memory individually to each job, the
initialization file merely allocates a “pool” of memory for network jobs. When someone connects to the
AM-6060, memory is taken from this pool and assigned to that network user; when the user disconnects,
the memory is returned to the pool.
The size of this memory pool is set by an SMEM (shared memory) statement in the initialization file.
The memory pool allocated by SMEM is also used for some other purposes, but for this discussion we’ll
consider that it’s all available for network users.
So, whenever you change any memory allocation, you need to be sure to balance all three types of
requirements.
To see a display of the current memory allocations on your computer, use the SYSTAT command:
SYSTAT/N
RETURN
In addition to other information about the status of the computer, SYSTAT shows how much memory is
assigned to each job, including any currently used network jobs. It does not show how much memory is
left in the SMEM memory pool. The SYSTAT command is explained in detail in the System Commands
Reference Manual.
