startpar is used to run multiple run-level scripts in parallel.
The degree of parallelism on one
CPU
can be set with the
-p
option, the default is full parallelism. An argument to all of
the scripts can be provided with the
-a
option.
Processes block by pending
I/O
will weighting by the factor
800.
To change this factor the option
-i
can be used to specify an other value.
The output of each script is buffered and written when the script
exits, so output lines of different scripts won't mix. You can
modify this behaviour by setting a timeout.
The timeout set with the
-t
option is used as buffer timeout. If the output buffer of a
script is not empty and the last output was
timeout
seconds ago, startpar will flush the buffer.
The
-T
option timeout works more globally. If no output is printed for
more than
global_timeout
seconds, startpar will flush the buffer of the script with
the oldest output. Afterwards it will only print output of this
script until it is finished.
The
-M
option switches
startpar
into a
make(1)
like behaviour. This option takes three different arguments:
boot, start, and stop
for reading
.depend.boot or .depend.start or .depend.stop
respectively in the directory
/etc/init.d/.
By scanning the boot and runlevel directories in
/etc/init.d/
it then executes the appropriate scripts in parallel.