Binary package “systune” in ubuntu bionic
kernel tuning through the /proc file system
This program writes kernel parameters, previously saved in a configuration
file, to the /proc filesystem. This enables kernel performance to be
adjusted without recompiling the kernel.
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systune can be alternative to sysctl(8). It is also started after the most
daemons and other init.d scripts, so it can be used as "second stage" sysctl.