3 Replies Latest reply: Jan 9, 2013 7:39 AM by RWSP RSS

    Camera Raw 7.3 bad at multicore usage

    Blitzchris Community Member

      Has anybody else noticed? But with the 7.3 update my quad core is suddenly down to 60 % CPU useage total, with 7.2 it was a 100 % and therefore faster processing of raw files. (Zenbook with i7 quadcore)

       

      On  my main machine I am still struggling with the time acr needs to open an nef file from D800, takes about 8-10 secs (from the raw file preview to actually open in photoshop cs6)  thats is a Xeon core 6 (12 virtual cores) with 24 g of ram and SSD`s

      But the cores are not used all, and so the total cpu use is also about 50-60 %

       

      The older Cs5 and acr is faster on d800 nef files on both machines due to less corrections done in acr.

       

      Any idea how to go to the ACR 7.2 back?

        • 1. Re: Camera Raw 7.3 bad at multicore usage
          ssprengel Community Member

          Each pair of virtual cores share one physical core and the cache associated with it.  When you look in Task manager do you see every-other-core used significantly or all 12 halfway?  If every other one is used significantly this might be something not trying to waste time with two separate threads clearing each other’s cache.

          • 2. Re: Camera Raw 7.3 bad at multicore usage
            Blitzchris Community Member

            Thank you for the fast answer!

             

            Checked it again and made a screen shot, CPU load total was 36 % and as you said, seems like some of the virtual ones are not used.

            But still 36 % is not good, when you think of, that opening takes 10 secs (from an SSD) and I know timings from similar systems that go down to 4 secs, therefore I am wondering. If you process 1000 of pictures like I do, this makes a difference. Just came back from a 3 month trip to south America for example, a ton of good pictures to process.

            CPU-1.jpg

            • 3. Re: Camera Raw 7.3 bad at multicore usage
              RWSP Community Member

              Blitzchris wrote:

               

              ...Any idea how to go to the ACR 7.2 back?

              Reverting to 7.2 is not a straightforward mouse click or two; it requires some digging around in files.  There's a lengthy discussion of how to accomplish this in

               

              http://forums.adobe.com/thread/1115020?start=0&tstart=0

               

              See posts #34 by Noel Carboni (starting halfway down into that post), through #69.