Be careful when adding or editing the default tunables. Changing the default tunables can make the system unusable. TrueNAS allows you to add system tunables from the web interface. You can manually define tunables, or TrueNAS can run an autotuning script to attempt to optimize the system. Tunables are used to manage TrueNAS sysctls, loaders, and rc.conf options.
loader specifies parameters to pass to the kernel or load additional modules at boot time.
Tunables manage TrueNAS sysctls, loaders, and rc.conf options.
Name Description Variable Enter the name of the loader, sysctl, or rc.conf variable to configure. loader tunables are used to specify parameters to pass to the kernel or load additional modules at boot time. rc.conf tunables are for enabling system services and daemons and only take effect after a reboot. sysctl tunables are used to configure kernel parameters while the system is running and generally take effect immediately.
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