Trailing-Edge
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PDP-10 Archives
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BB-PBDEB-BB_1990
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10,7/system/setvir.hlp
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SET VIRTUAL LIMIT Command
Function
The SET VIRTUAL LIMIT command sets the current virtual page limit
(CVPL). CVPL is described in the TOPS-10 Monitor Calls Manual.
Format
SET VIRTUAL LIMIT nK
nP
Where: K can be specified within the range 1 to 256K; P can be
specified within the range 1 to 512p.
1K equals 1024 words and 1P equals a page of 512 words.
If K and P are omitted, K is assumed.
If you use 0 for the argument, the value of CVPL is
assumed. CVPL is set by the system administrator and
is the default virtual page limit.
LIMIT is an optional portion of the command line.
Characteristics
Leaves your terminal at monitor level.
Example
Set your page limit to 32 pages.
.SET VIRTUAL LIMIT 32P<RET>
Run the SORT program:
.R SORT<RET>
*TEAM.RNO=TEAM.RNO/RECORD:80/KEY:1:80
/COLLATE:FILE:COLLATE.RNO<RET>
System message says that you set your page limit too low.
?SRTNEC NOT ENOUGH CORE FOR SORT/MERGE
*^C
Reset page limit.
.SET VIRTUAL LIMIT 132P<RET>
.R SORT<RET>
*TEAM.RNO=TEAM.RNO/RECORD:80/KEY:1:80
/COLLATE:FILE:COLLATE.RNO<RET>
Program ran successfully in the 132 pages that you specified.
[SRTXPN EXPANDING TO 130P]
SORTED 14 RECORDS
34 KEY COMPARISONS,
2.43 PER RECORD
16 RECORD LEAVES IN MEMORY
0 RUNS
0:00:00 CPU TIME, 16.71 MS PER RECORD
0:00:00 ELAPSED TIME
*^C
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