RUNBIG(C) XENIX System V RUNBIG(C)
Name
runbig - Runs a command that may require more memory than
normal.
Syntax
runbig command [ arguments ]
Description
runbig executes commands that may require more memory than
is normally available to a user process. While runbig is
executing the specified command, it ignores the restriction
on the default of memory available to the user process. The
command will run normally until it grows to be larger than
the amount of memory available to a user process. It is
then locked in core memory and not swapped until it either
exits or shrinks to a size less than or equal to the size of
a default user process.
The removal of the process size restriction during execution
of runbig will be preserved during an exec(S) system call,
but not for a fork(S) system call.
See Also
exec(S), fork(S)
Notes
Running programs greater than the default process size, and
therefore, possibly greater than the size of the disk swap
area, may severely impact system performance.
runbig has no effect on systems whose memory size is much
less than the size of the disk swap area.
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