Bad performance of LR CC Classic on a MacPro 2009

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  • Updated 10 months ago
Despite the last update, LR CC Classic has very bad performance on a MacPro 2009 (2 proc and 42gb of RAM). It’s a general sensation, but in particular when importing, exporting and doing local adjustment. It’s not acceptable for professional uses.
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Fabrice RODRIGUEZ

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Posted 10 months ago

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Fabrice RODRIGUEZ

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This reply was created from a merged topic originally titled Export in LR classic prevent from doing something else.

When exporting picture in LR classic, it’s almost impossible to do something in LR I use a macpro which is handling perfectly the multiprocessor tasks. It seems that LR is not using this capability when exporting images
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Cletus Lee

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You don't note the version of your OS.  This is an important factor.  MacOS 10.13.2 (High Sierra), 32GB RAM  and a minimum of 4 processors renders quite acceptable performance with LR Classic. 
LR performance improves with 4 or more processors.  LR can use up to 6 CPU cores.  I think your problem is hardware constrained.  2 CPU cores simply is not adequate for the performance expectations that you have.  The Export process is a multi threaded process and will consume all of the cores available (up to 6).    Your expectations are too high for hardware that is 9 years out of date. 
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Fabrice RODRIGUEZ

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Hi Cletus, thanks for you though. I'm running  a 2 proc quad-core under ElCapitan. Agree with you it's an "old" machine", but every time I upgrade LR it get slower and slower. Running the same basic tasks on the same computer see the competition much faster. So it's certainly not a problem of hardware but a problem of software optimization.
If I follow your though, exporting takes 6 core, so I should have 2 left to run everything else which is more than enough to simply select another collection and culling photos. Unfortunately is doesn't work when it was working is the previous version.
I hope the next release will have the basic done in therm of performance.
Take care
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Cletus Lee

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"So it's certainly not a problem of hardware but a problem of software optimization."  This is where you and I differ. Classic 7 is the most optimized version of LR to date.    ElCapitan is 2 OS versions out of date.  Apple has made great progress at optimizing the OS and LR Classic 7 has been optimized to take advantage of that.    If I don't see performance issues running the same version of LR on a comparable but more advanced set of hardware  And Others running MacOS don't have performance problems, I would seriously consider the point made that the OS and Hardware just might be the only problem that you are having issues with.   If you get other responders to your post, there is a strong probability that they will agree with my assessment. FWIW,  a quad core CPU running two processes per core is actually only plotting half of the CPU time to each process.  LR will never use more than 4 cores in a Quad Core machine (and probably only 3 cores).  You can run ActivityMonitor while running LR and see how much load LR is putting on the system (or how must LR is being constrained by the system resources.  One other point, LR uses extensively working storage.  If you have less that 1200GB of free space on the primary drive, your exports might be limit from lack of free space to create temporary files that LR needs during export.