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NAME
slack - Spawn processes with customised timer slack
SYNOPSIS
slack (get | GET)
slack ((reset | INTERVAL) [--fatal] [--] COMMAND...)
DESCRIPTION
Get the current timer slack value or spawn a new process
with a new timer slack value.
If the verb get or GET is used, the current timer slack
value and exit. If get is used, the program shall use
as high prefix as possible. If GET is used the value
shall be printed in nanoseconds but not unit shall be
printed.
If the verb reset is used, the process shall set the
timer slack value for the process to the default timer
slack value, and exec(3) to COMMAND.
If an INTERVAL is given, the process shall set the
timer slack value for the process to INTERVAL, and
exec(3) to COMMAND.
INTERVAL must be a positive number, optionally with
a prefix. Recognised prefixes (and units) are:
ns, n nanoseconds (default)
µs, µ, us, u microseconds
ms, m milliseconds
s seconds
The default timer slack value is the timer slack value
on PID 1.
OPTIONS
--fatal
Fail if the timer slack value cannot be set.
NOTES
Real-time threads do not slack around.
RATIONALE
Could be useful increase the performance of your computer.
SEE ALSO
nice(1) ionice(1), prctl(2)
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