Turn on performance mode for macOS Server
Performance mode changes the system parameters of your Mac. These changes take better advantage of your hardware for demanding server applications.
This article applies only to Mac computers with an Intel processor.
If you need to run high-performance services on a Mac with macOS Server, you can turn on performance mode to dedicate additional system resources for server applications.
OS X El Capitan 10.11 and later
To turn on performance mode in OS X El Capitan 10.11 and later, use the
nvram command to adjust the boot-args NVRAM variable. If you reset NVRAM, this setting is cleared.
This command displays the boot-args NVRAM variable. If you see serverperfmode=1, performance mode is already turned on.
If performance mode isn't already turned on, you can enable it by setting serverperfmode=1 in the boot-args NVRAM variable with this command:
sudo nvram boot-args="serverperfmode=1 $(nvram boot-args 2>/dev/null | cut -f 2-)"
To turn off performance mode, use this command:
sudo nvram boot-args="$(nvram boot-args 2>/dev/null | sed -e $'s/boot-args\t//;s/serverperfmode=1//')"
Earlier versions of macOS
To turn on performance mode in OS X Mountain Lion, OS X Mavericks, or OS X Yosemite, use the serverinfo command in Terminal.
To get the current mode, use the command:
To turn on performance mode:
serverinfo --setperfmode 1
To turn off performance mode:
serverinfo --setperfmode 0
Transitioning to or from performance mode requires a restart.
If you're a developer, and want to learn more about how performance mode can optimize your system for server-specific applications, see the sysctl(3) manual page.