Trailing-Edge
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PDP-10 Archives
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BB-JR93N-BB_1990
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10,7/system/core.hlp
There are 2 other files named core.hlp in the archive. Click here to see a list.
CORE command
Function
The CORE command prints or changes the amount of core memory
assigned to your job. Because programs usually allocate core,
you generally do not need this command.
If your job is locked in core and you issue this command with a
nonzero argument, the monitor prints an error message.
Format
CORE nx
Where: n is a decimal number; this argument is optional.
You may not assign more than one section of core to
your job.
If n is 0, the low and high segments are removed from
the virtual addressing space of your job.
If n is greater than 0, n represents the total number
of blocks of core to be assigned to your job from this
point on.
If n is less than the high-segment size plus the
minimum low-segment size, n plus the high-segment size
is assumed.
x is either K or P. K represents units of 1024 words.
P represents 512-word pages. For example, 3P
represents three pages or 1536 words. If you do not
specify x, K is assumed.
If you omit nx, the monitor prints the amount of core currently
being used by your job, as well as the octal page number, page
(accessibility) status, and the origin of the pages. This form
of the CORE command does not change the core assignment.
Page status can be any of the following:
o executable (EX)
o readable (RD)
o writable (WR)
o sharable (SH)
o locked (LK)
o allocated-but-zero (AZ).
Origin can be private pages, spy pages, or the file
specification.
The total pages in the space is also displayed.
Characteristics
Leaves your terminal at monitor level.
Does not operate when your job is in run state.
Example
Use CORE to look at the amount and contents of memory assigned
after using MAIL.
.CORE<RET>
Page number Page status Origin
0-74 EX RD WR Private pages
76-165 EX RD WR Private pages
620-674 EX RD SH DSKA:MS[1,4]
Total of 162 pages
Virt. mem. assigned 118+45P (Current limit: 16384P Max limit: 16384P)
Phys. mem. assigned 118+45P (Guideline: 16384P Max limit: 999P)
Swap space left: 81502P