why MAC becomes running slow by the time?

mac running slow - how mac works

How MAC works?

1- Computer Components

To know why your mac is running slow, you should know how computer works, so every computer consists of two parts:

a. Hardware.
Which is the physical parts or components of a computer, such as the monitor, mouse, keyboard, computer data storage, hard disk drive (HDD), graphic cards, sound cards, memory, motherboard, and so on, all of which are physical objects that are tangible.

b. Software.
Which is any set of machine-readable instructions that directs a computer’s processor to perform specific
operations.

2- Computer Operating System

Computer Hardware and software need an operating system. Such as Windows, Linux, MAC OS.
An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs.

165px-Operating_system_placement.svg

3- Running Applications

All Application software stored in hard disk drive (HDD).
When user request to run any application the central processing unit  (CPU) reads all stored data from HDD and put them into random access memory (RAM) then  start process them.

CPU prefer to use RAM because it is much more faster than HDD.

But RAM is a small temporary storage capacity, for example RAM is 8G but HDD more than 1000G.

Because the limit storage of RAM, OS always free RAM from the finished closed application to reuse this space with new applications.

But what if you want to run more applications at the same time and there is not enough space left in RAM to hold the new data.
OS will solve the insufficient RAM space to run more application by reserving some free space found in HDD as a virtual memory and start using it beside the real RAM.
00_virtual_memory

But HDD is slower than RAM, so using virtual memory from HDD will slow the processing of applications.

But what if your HDD is almost full and there is not enough space for virtual memory.

Then your computer will suffer and become so slow waiting to finish some jobs to free some small space to the next job.

Fix the RAM and HDD problem

  • Running too many applications at the same time leads to consuming hardware resources, and we should close the finished applications.
  • Add more or Replace your old RAM to Increase its capacity.
  • If the HDD free space is small try to buy a big one.
  • Clean and delete all unnecessary files including old files from your HDD or move old files to external drives and delete the originals.
 

CPU always busy.

What if there is some hidden programs always run in our computer, spying on us or stealing our sensitive data, sure these programs will not finish and will make the CPU always busy.
00_busy-cpu

Fix the busy CPU

  • Again we should close All finished applications, to reduces the CPU consumption .
  • Use Virus & spyware protection software and cleaner.

Every new computer start works fine and fast, there is no problem, but by time they become slow, Why?

  • By time all new applications require more hardware resources such as fast processor more HDD storage space and RAM space, and that will make our current computer to be slow.
  • When we using our computers most of our application stores settings, history logs, temporary files, update their files with new versions, add more packages from internet and so on, so they always become bigger.
  • Every application we install adding more files to the OS and store additional setting to the system.
  • So when we startup our computer it needs more time to load the new files and new setting added to the system.
  • Even when we uninstall them, some of their settings and temporary log files stay in HDD.

Fix the File Increasing .

  1. Install only the needed applications.
  2. Clean and delete all unnecessary files including old files from your HDD or move old files to external drives and delete the originals.
  3. Using cleaner applications which clean your HDD from Application Leftovers, Trashes, Cache Files, Logs, History files to speed up your computer.You can Download Detox for MAC to Clean Your HDD

source:
http://mac-runningslow.blogspot.com/2015/09/why-mac-becomes-running-slow-by-time.html

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