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Mac Running very low

I have had a Mac for two years now running perfectly. A few days ago it started to go very slow!

I got a few apps like Cleanmymac and CCcleaner that cleaned a bit but still very slow. Startup time takes half an hour at least especially in the last bit.

I got a few antiviruses to run but still they are not showing any threats so I removed them.

I ran disk utility showed no errors.

I have a Mac Airbook so I opened Activity monitor and compared it to my Mac. The one thing I noticed is that Activity Monitor is showing

Physical Memory: 8 GB

Memory Used: 2.98 GB

Cached files: 4.66 GB

Swap Used: 0 bytes

App Memory: 1.86 GB

Wired Memory: 1.12 GB

Compressed: 0 bytes

Disk

Data read: 4.8 GB

Data written: 1.18 GB

Data read 16 kb

Data written : in bytes or even zero

comparing to my Air book, the items in bold seemed to be very different. Is that a permissions thing or is the disk damaged but Disk utility is noy showing it? Or maybe VM is turned off somehow?

I am a newbie so please be patient

The vast majority of people who contribute here advise not running any anti-virus programmes, so make sure they have been uninstalled thoroughly, just trashing them is not enough. Apps such as cleaners, optimisers or other that purport to enhance the performance of your Mac are not needed either, again consult the developers on how to uninstall these apps thoroughly. you could try running this app, https://etrecheck.com/ download, install and run. Then post the report on these pages by using the Share button on the top left of the report. The report gives a snapshot of what is on your Mac and is useful in diagnosing problems. No personal data is revealed.

最後更新：2017-09-22 18:07:13

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