Mountain Lion Performance?

If your installation of Lion is horrendously slow, you need to

resolve what is causing those issues as they will just carry

over to Mountain Lion.

Before the update my laptop was amazingly fast, after the update everything seems very slow "/

I felt the pain of OS X Lion slowing my Macbook Pro after upgrading from Snow Leopard. Boot time doubled for me for some reason.

I did a clean install of Mountain Lion, and ML has been a lot faster booting and snappier (lack of better term) for all programs. This is my favorite part of installing Mountain Lion.

Installation of Lion on any of my Macs did not result in slow

performance. As far as Mountain Lion, I have only installed

on my 2011, 13", 2.7 GHz Macbook Pro so far and see no performance

difference between Lion and Mountain Lion. Actually, updating from

Snow Leopard to Lion actually made it faster.

Jury is still out on my other Macs as I haven't gotten around to

installing yet.

Im having same problem. My HD is now full of "Other" I think that is probably the problem. Before th upgrade to Mt Lion I had no "other" on my disk. Now I have 187 Gig which is half my HD.

My MacBook was slow, even though it came with Lion Pre Installed, and since Mountain Lion everything has seemed much snappier and quicker. Everyone that can should upgrade!

This is true for me, too. My mid 2010 MacBook Pro...always struggled with Lion. Worked on it a lot with suggestions from the forums, but never could get it to run quickly. Installed Mountain Lion a few days ago, and it's been quicker and "snappier" in every regard since the upgrade. Happy!

Did you download from the App Store and just "upgrade" or did you do a clean install?

Can a clean install be done without any DVD disk etc?

Ok, I've been working on macs for years. What is a 'clean install' vs. the download from Apple?

joanfromkansas wrote:

Ok, I've been working on macs for years. What is a 'clean install' vs. the download from Apple?

Clean install - completely wipe and reformat hard drive and

install OS from scratch. Then reinstall apps

and import data.

The download can be used as an upgrade on top of a current installation.

Within the downloaded package (right click see package contents) is the

actual disk image that contains the OS installation. This can be used

to create a stand alone installer (USB memory stick or DVD). This

can then be used to do a clean install.

Why a clean install instead uf upgrade? If you have been upgrading OS's

over the years and also been accumulating apps that aren't being used

and associated drivers perhaps, sometimes doing a clean install is a good

way to start fresh and eliminate the fluff that one can accumulate over

the years. Is this necessary? if a system is well maintained and kept

up to date, it usually isn't necessary.

However, some people just like to have a fresh start with a new OS

to elimate any possible issues with "old stuff".

As a note for performance, FWIW, on my 2011 Mac Mini Server

running Lion client (no Server) gives a Geekbench score of 9467.

The same machine running Mountain Lion client on a different

partition yields a Geekbench score of 9686. Ran test multiple

times booting Lion then booting Mountain Lion and the results are

the same. It's not a big difference but it is a difference and I

have noticed things being a little snappier/quicker in general.

I have SL, Lion and ML. I think I was happiest with SL. Lion is definetly slower than SL. ML is faster in some aspects. ML is installed on my new MBA which has a flash memory, so I cant compare. My MBA had Lion installed when I bought it last week and was blazing fast - 13 second bootup and 3 second shut down. today after the installation of ML, boot up is nearly the same, however, the shutdown is 13 seconds!!! I wish i stayed with Lion. Rest of the apps have no difference.

Thank you. Fantastic explanation! I haven't 'upgraded' to ML yet--after reading these posts I'm almost afraid it will confuse my Time Machine, etc. Seems everytime I do an upgrade, I get some sort of 'surprise' on my Mac which needs to be worked through. But I thank you again.

I will share my experience. I have been following the Kernel Task and other threads for over a year now. I had "upgraded" from Snow Leopard to Lion. Worst decision ever.

Because of a hard disk failure, I now have a completely new hard disk, and when Apple sent my laptop back with a fresh install of Snow Leopard, before installing any useful software beyond the vanilla Apple crap (who needs Mail, Safari is the #5th best browser, no software for code editing etc), I decided to immediately upgrade to Mountain Lion.

This time, because it was as good as a clean install as it was a fresh upgrade from a bare-bones Snow Leopard, I have to say ML is fantastic. It's quite snappy, and some of their new simple updates (in Finder, etc) are actually quite useful.

So, my recommendation as always: do NOT upgrade from a used machine. Just do as "clean" an install as possible. ML is surely worth it.