"noatime" for OS X on SSD. Place this file to /Library/LaunchDaemons/com.noatime.root.plist and do `sudo launchctl load -w /Library/LaunchDaemons/com.noatime.root.plist`

Library_LaunchDaemons_com.noatime.root.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
    <dict>
        <key>Label</key>
        <string>com.noatime.root</string>
        <key>ProgramArguments</key>
        <array>
            <string>/sbin/mount</string>
            <string>-vuwo</string>
            <string>noatime</string>
            <string>/</string>
        </array>
        <key>RunAtLoad</key>
        <true/>
    </dict>
</plist>

Thank you for sharing this.
The instruction works perfectly with OSX Sierra.

An idea for making it a bit more flexible: just route it through the shell's for loop.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
    <dict>
        <key>Label</key>
        <string>com.noatime.root</string>
        <key>ProgramArguments</key>
        <array>
            <string>/bin/sh</string>
            <string>-c</string>
            <string>for i; do /sbin/mount -vuwo noatime "$i"; done</string>
            <!-- Put any number of mount points here: -->
            <string>/</string>
            <string>/System/Volumes/Data</string>
        </array>
        <key>RunAtLoad</key>
        <true/>
    </dict>
</plist>

I am getting the following error when trying to execute the command: /Library/LaunchDaemons/com.noatime.root.plist: Path had bad ownership/permissions

Can you please help? Thank you!

@Artoria2e5 why would you need to loop there? One command is enough.

@nadsim Google still works and the answer is at the first result there.