ratemin=x Quit if rate of x KiB/sec can't be met
ratecycle=x ratemin averaged over x msecs
cpumask=x Only allow job to run on CPUs defined by mask.
+ cpus_allowed=x Like 'cpumask', but allow text setting of CPU affinity.
fsync=x If writing with buffered IO, fsync after every
'x' blocks have been written.
end_fsync=x If 'x', run fsync() after end-of-job.