As we know the batch and idle algorithms don't have priorities. But chrt
expects '0' as the priority, otherwise the command fails.
# chrt -i cat /etc/fstab
chrt - manipulate real-time attributes of a process
Set policy:
chrt [options] [<policy>] <priority> [-p <pid> | <command> [<arg>...]]
...
...
...
# chrt -i 0 cat /etc/fstab
# /etc/fstab: static file system information.
#
# noatime turns off atimes for increased performance (atimes normally aren't
...
...
...
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