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Mountain Lion Performance Issues #1
Jon Busby's picture
by Jon Busby
November 28, 2012 - 8:57pm

Hi everyone

I am finding my Aperture performance a big sluggish and wanted to see if anyone had any suggests.

My set up is

- iMac 24” 2.4ghz Intel Core 2 Duo, approx 4 years old
- 4 gb RAM
- Running Aperture 3.4.3
- modest library, less than 8,000 images, predominatly RAW
- HD 320gb, approx 100gb free

I am wondering if Mountain Lion is the issue. One idea is to do a clean install of Snow Leopard but would welcome your thoughts.




David  Moore's picture
by David Moore
November 28, 2012 - 10:35pm

I have a four year old Laptop. Everything is fine. But Ive put in a SSD and I have 8 gb ram. So besides suggesting upgrading the ram, if the imac will take it, have you looked at all the maintenance suggestions in the FAQ section. Ill mention a few… Disk utilities for Hd, boot in safety mode and then restart, do all three steps in the repair and rebuild AP lib. Make sure you have 80-100 GB free space on the 320 HD. There are others but thats a good start. For a professional photographer shooting alot, those maintenance Items are like a cars oil change.. every 6 months whether you need it or not.
Cheers David
Twitter= @davidbmoore
Scottsdale AZ

Chris Hoch's picture
by Chris Hoch
November 28, 2012 - 10:51pm

I am with you on this one Jon.

I to have been feeling that aperture has been feeling the strain since changing the OS X version to Mountain Lion.

My mac is a Mac mini with 2.4ghz Dual Core 2 Duo. I have maxed it out on RAM at 8gb, which at the time on Lion made it feel to fly.

I did a clean install of Mountain Lion and my booting of OS X, running of aperture and shutting down of OS X now just makes it feel like the mac is in pain at some points. It is usable just does not feel as zippy as it use to.

I am going to put in a SSD after Christmas to see if that helps out. My Library though it on an external drive on a firewire 800 connection. Although if I run a library on my Mac’s main drive it doesn’t seem to speed it up any.

I have tried a few things like Onyx and CCleaner and nothing seems to make it as quick as the old Snow Leopard and Lion days. I know OS moves on and demand better hardware but I would not thought it would have been that harsh a demand on my mac’s specs.

Butch Miller's picture
by Butch Miller
November 29, 2012 - 12:14am

I run Mountain Lion 10.8.2 and Aperture 3.4.2 on a late 2007 MBP 2.4 Ghz C2D, 4GB RAM and don’t see much difference in performance with my 21.5” iMac, 2.5 Ghz i5 with 12GB RAM … though I use Aperture on the laptop when working outside the studio with much smaller libraries … Given that the laptop drive is only 4800 rpm I think accounts for the difference …

I did a clean install of Mountain Lion and manually installed all my apps as I had a lot of clutter built up from the past decade of pulling over supporting files using Migration Assistant … I’m not sure if that had any impact, but ML seems to be much more stable and responsive than Lion was …

Jon Busby's picture
by Jon Busby
November 29, 2012 - 2:13am

Thanks guys. It’s interesting that different people have different ideas and experiences.

David ill try your suggests regarding the oil change…oh and if you have any more they will be more than welcomed.



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