coredown.1


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.TH COREDOWN 1 COREDOWNDOWN
.SH NAME
coredown - Disable all but one CPU core
.SH SYNPOSIS
.B coredown
.RI [ count ]
.SH DESCRIPTION
The
.B coredown
utility disables all CPU cores on the machine
expect the CPU 0.
.PP
This is designed as a workaround for virtual machines
that have input performance issues (keyboard input lag
and keys getting stuck) when more than one CPU core is
online.
.SH OPTIONS
No options are supported.
.SH OPERANDS
The following operand is supported:
.TP
.I count
Enable the first
.I count
CPU cores and disable the rest.
.SH STDIN
The
.B coredown
utility does not use the standard input.
.SH INPUT FILES
None.
.SH ENVIRONMENT VARIABLES
No environment variables affects the execution of
.BR coredown .
.SH ASYNCHRONOUS EVENTS
Default.
.SH STDOUT
The
.B coredown
utility does not use the standard output.
.SH STDERR
The standard error is used for diagnostic messages.
.SH OUTPUT FILES
None.
.SH EXTENDED DESCRIPTION
None.
.SH EXIT STATUS
If the
.B coredown
utility fails it will exit with one of the following statuses:
.TP
0
Successful completion.
.TP
1
An error occurred.
.SH CONSEQUENCES OF ERRORS
Default.
.SH APPLICATION USAGE
None.
.SH EXAMPLES
None.
.SH RATIONALE
None.
.SH NOTES
The is no difference between the
.BR coreup (1)
and
.BR coredown (1)
utilities when the
.I count
operand is specified.
.SH BUGS
None.
.SH FUTURE DIRECTIONS
None.
.SH SEE ALSO
.BR coreup (1),
.BR coreupdownd (1)