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Memory Management in 3.4.2

354 Views 4 Replies Latest reply: Nov 4, 2012 9:26 PM by Ernie Stamper RSS
Ernie Stamper Level 8 Level 8 (37,455 points)
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Nov 3, 2012 5:34 PM

If you don't shoot with a camera that produces huge files like the Nikon D800 does, you may not have an appreciation for this:  you simply cannot believe the difference in the management of System Memory in 3.4.2 vs 3.4.1 and earlier!  It is a night and day difference.  Were it not for the fact of tests with my new rMBP with 16 GB of RAM, I might have thought it to only be related to my Mac Pro and its older graphics card and less RAM.  But very targetted tests with both those Macs with processing large numbers of the 45 MB RAW files from the D800 showed the same behavior on both Macs -- Free Memory would be go to nominally zero, and Inactive Memory build up would account for the RAM not being available and never to be release without a Restart of the Mac, and the Macs being starved for memory while doing common Aperture tasks.  Active Memory would never seem a problem, as its usage was never seen as excessive, and only when there would be no Free Memory left would the problem be revealed.


I was never sure what the root cause of the behavior was, but there is no question but what it was corrected in 3.4.2.  Nice going Aperture team!



  • léonie Level 8 Level 8 (46,560 points)
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    Nov 4, 2012 1:50 AM (in response to Ernie Stamper)

    Really good news, Ernie. That is a great improvement when working with the top-of-the-line cameras. I'll ask Santa for a Nikon.


    This made me try again really huge images, but Aperture is still not up to dealing with very large scans.

    Importing an 21000 × 19718 pixel scan (jpeg, 124.9 MB) took about 10 seconds on my older MBP (i7, 8GB memory) and editing and browsing is still painfully slow.


    Now I'll check, what happens on my new MBP with SSD and 16BG RAM:

    It is o.k., zooming will take 3 or 4 seconds, but I can scroll and edit once loaded, and the Activity Monitor shows, that Aperture is not hogging all the RAM.

  • Kirby Krieger Level 6 Level 6 (11,570 points)
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    Nov 4, 2012 11:24 AM (in response to Ernie Stamper)

    Ernie -- thanks for these reports.  Afaict, Aperture 3.4.2 loads much faster.  Haven't tested any high MP or MB files (and likely won't, since you've done the work). 


    My personal photos are all 24 MB (Sony) and 45 MB (Sigma DP2Merrill, converted to TIFF by Sigma's ungainly software).  Like you, some quasi-masters are 100-200 MB.  On my MBPr w. 16 GB RAM and SSD system disk, I haven't noticed any appreciable performance problems.  (Sorting or filtering 250,000 Images is not instantaneous, etc. -- it's remarkable to me how quickly one adjusts to whatever power one has available.  I already feel that I am working at the top performance of this machine.  Give me more power, and I'll just change what I expect to be able to do.)


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