Clean and speed up Mac OS X as much as possible?

Question

macOS

I want to get rid of everything superfluous. MacBook 2013, 4Gb RAM. I'm moving to a Mac from Linux and love minimalism and perfectionism the most in this world. Notebook task: web development.
Let's make a complete list of what can be cut down with you.
I'll start:
1) Change the collapse animation from genie to normal. In the dock settings.
2) Disable Dashboard. Go to settings - "Mission Control" - and uncheck "show Dashboard as separate space".
3) Remove all unnecessary from startup.
4) ...

Answer 1

I understand that the linux past leaves its mark, but here's a tip for you: don't touch anything.
It works great out of the box too.

Answer 2

Don't waste your time, miracles don't happen. 4Gb is just not enough to work on 10.9 so you don't turn it off.

Answer 3

Nothing ever had to be turned off. My opinion - Macbook Air is not designed for "hard" use. It is suitable for housewives who want to surf the Internet, social networks, watch movies, run a couple of simple programs
.
I myself had 4GB of memory installed on my iMac for a long time - indeed, there were problems. But after pumping up to 16GB, all the "brakes" simply disappeared.

Answer 4

as a rule, the most important resource eater - the kernel_task process
can be reined in by editing ACPI_SMC_PlatformPlugin.kext
1) Open System Information (under Apple icon in upper-left, click About This Mac, click More Info)
2) Click System Report button, under Hardware, find your "Model Identifier" -remember this for later use
3) Navigate to /System/Library/Extensions an right-click, Show Package Contents of IOPlatformPluginFamily.kext
4) Open Contents/PlugIns and Show Package Contents of ACPI_SMC_PlatformPlugin.kext
5) Open Contents/Resources
6) Find your MacBookAir?_?.plist (? = your model identifier from step 2) and delete the file
7) Reboot! Remember, anytime you do a System Update, you may need to repeat this process