Turn on performance mode for macOS Server

Performance mode changes the system parameters of your Mac. These changes make better use of your hardware for demanding server applications.

This article only applies 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 will be cleared.

This command displays the boot-args NVRAM variable. If you see serverperfmode=1, performance mode has already been turned on.

nvram boot-args

If performance mode hasn't already been 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:

serverinfo --perfmode

To set high-performance mode:

serverinfo --setperfmode 1

To turn off high-performance mode:

serverinfo --setperfmode 0

Transitioning to or from high-performance mode requires a restart.

 

Learn more

If you're a developer and want to find out more about how performance mode can optimise your system for server-specific applications, see the sysctl(3) manual page.

 

Published Date: