Disable tailspind and spindump to Speed Up your Mac
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Possibly very helpfull, but before I try: how can you enable both processes again in case some critical applications rely on it?
Yeah man. To reverse it it's as follows:
sudo mv /System/Library/LaunchDaemons/com.apple.spindump.plist.bak /System/Library/LaunchDaemons/com.apple.spindump.plist
sudo mv /System/Library/LaunchDaemons/com.apple.tailspind.plist.bak /System/Library/LaunchDaemons/com.apple.tailspind.plist
See what's happening here in his code is the following:
1. sudo launchctl unload -w [...]apple.spindump.plist
stop the process that handles the dumping:
sudo ("super-user: do")
launchctl ("launch controller" - basically the process manager for Linux)
unload ("stop" - unload it from memory)
-w ("[w]rite" - save the new configuration to disk)
[...]apple.spindump.plist (I abbreviated the path here. This is the 'p-list' or 'preferences list or 'processes list'' file for spindump, get it?)
2. sudo mv [...].apple.spindump.plist [...].apple.spindump.plist.bak
Rename the process so it cannot be found by the system (which has its name hard-coded). The .bak extension is used so you've got it as a "bak-up". You could just as easily call it "roses.are.red" but this makes it easier to change back later.
mv ('move'. Which Linux also uses for 'rename")
[...].apple.spindump.plist [...].apple.spindump.plist.bak (from the first path listed to the second. Basically, he's just tacking on .bak to the end of the process, so when something tries to run it, it cannot be located, and fails gracefully, meaning the computer just carries on with its business).
3, sudo launchctl unload -w [...]apple.tailspin.plist
sudo mv [...].apple.tailspin.plist [...].apple.tailspin.plist.bak
The next lines do the same as #1-2 for tailspin.
See, there's no great arcane magic taking place here. He's stopping two background-processes, then "misplacing" them so your Mac can't call 'em.
Basically says to your mac, "[Disable] the [c]omputer's [s]ystem [r]egulator [util]ity until further notice. S'why AFTER you make this change (which will persist until you mv the file names back to their originals, as the code I provided above does) it's really important that you run the restart process again, csrutil enable the regulators back ON, and then reboot one final time. All that rigamarole is just to give you enough temporary access rights to screw with the Mac's deep-down settings. You DO NOT want said regulators disabled all the time.
Leaving spindump and tailspin disabled won't hurt anything other than Apple's ability to get a detailed explanation of an event when something goes wrong anonymously mailed to them. Unless you're a hardcore developer (as I used to be - for Apple, point of fact) you won't care. If it boots your performance? Knock yourself out; you're safe. Won't void your warranty or nothin'.
Does anybody have direct experience that this procedure is still valid for 10.14.x Mojave?
My 2012 MBPr is starting to feel like it can't afford to waste any CPU cycles!
Those processes all seem to exist the same on my Mojave Mac, so yeah, if you're seeing them slow things down I think this method would help alleviate that here, too.
I know this is an old post, but I wanted to point out that you can disable these services (or any other ones) without disabling SIP. You just need to use the newer
launchctl syntax. For
tailspind, it would be these four commands:
sudo launchctl bootout system/com.apple.spindump
sudo launchctl disable system/com.apple.spindump
sudo launchctl bootout system/com.apple.tailspind
sudo launchctl disable system/com.apple.tailspind
bootout lines unload the service, and the
disable lines keep
launchd from ever loading them again.
If you ever want to reverse it, you would do this:
sudo launchctl enable system/com.apple.spindump
sudo launchctl bootstrap system /System/Library/LaunchDaemons/com.apple.spindump.plist
sudo launchctl enable system/com.apple.tailspind
sudo launchctl bootstrap system /System/Library/LaunchDaemons/com.apple.tailspind.plist
Dave, during your researches did you happen across anywhere that describes tailspind and spindump in more detail ?