Performance improvements for El Capitan

ElCapitan.applescript

-- Disable Time Machine Local Backups
sudo tmutil disablelocal
-- Disable Automatic Spell Checker
defaults write -g NSAutomaticSpellingCorrectionEnabled -bool false
-- Disable animations when opening and closing windows.
defaults write NSGlobalDomain NSAutomaticWindowAnimationsEnabled -bool false
-- Disable animations when opening a Quick Look window.
defaults write -g QLPanelAnimationDuration -float 0
-- Accelerated playback when adjusting the window size (Cocoa applications).
defaults write NSGlobalDomain NSWindowResizeTime -float 0.001
-- Disable animation when opening the Info window in OS X Finder (CMD+I).
defaults write com.apple.finder DisableAllAnimations -bool true
-- Disable animations when you open an application from the Dock.
defaults write com.apple.dock launchanim -bool false
-- Make all animations faster that are used by Mission Control.
defaults write com.apple.dock expose-animation-duration -float 0.1
-- Disable the delay when you hide the Dock
defaults write com.apple.Dock autohide-delay -float 0
-- Disable the animation when you sending and replying an e-mail
defaults write com.apple.mail DisableReplyAnimations -bool true
defaults write com.apple.mail DisableSendAnimations -bool true
-- Disable the standard delay in rendering a Web page.
defaults write com.apple.Safari WebKitInitialTimedLayoutDelay 0.25
-- The keyboard react faster to keystrokes (not equally useful for everyone
defaults write NSGlobalDomain KeyRepeat -int 0

I would like to suggest:
sudo launchctl unload -w /System/Library/LaunchDaemons/org.apache.httpd.plist
to disable Apache webserver auto starting. That honestly it is useless to the most.