Processing 500+ Mbyte image files takes serious compute power, and fast IO. You're waiting 90 seconds or so? For a 105 Mpixel image file? My gosh, when I worked for NASA doing a 1024x1024 pixel, 8bit per component rendering from 600 Mbytes of raw data took about 12 hours.
I think the adjustment you have to make is to your expectations. G On Tue, Jan 17, 2012 at 9:03 AM, John Sessoms <[email protected]> wrote: > From: Mark C > >> This weekend I finally downloaded Photoshop CS5 and installed it (I've >> been making do with CS4 up till now). I also bumped up the RAM in my PC >> from 6 gigs to 16. Anticipating blazing fast performance, I scanned some >> 6x7 negs and started processing them. The images themselves take up >> between 550 to 650 megabytes on the disk, and have a 'pixel dimension" >> in PS of 450 to 550 mb. >> >> So... I'm not seeing any speed enhancement at all. Particularly >> frustrating is when I launch a filter and things seem to just stop. For >> instance, I loaded a large file and selected filter > lens correction. >> About 20% of the image appears in the preview and then everything stops >> for 45 to 60 seconds, then it starts up again. I fired up windows task >> manager and it shows ample free memory (9 to 10 gigs 'available' and 4 >> to 6 gigs "free.") During the pause the processor drops to just 1 or 2 >> percent utilization and the system swap file does not grow. However - >> photoshop does spawn 8 to 12 temp files, most of which show 0 KB in size >> but a couple of which are at the 3 to 6 gigabyte size. During the pause, >> I see the drive light on, so I guess everything is stopping while >> Photoshop is writing to the scratch drive. But why is it writing to the >> drive when it have gobs of free memory? And yes - I did check the >> performance tab and PS is set to access 12.964 gigs of ram. Should be >> plenty. >> >> I'm starting to wonder if I should set up a ram disk and make it the PS >> scratch disk. I'm not even sure if you can do that in WIndows 7 (last >> time I used a RAM disk I was using a DOS computer....) >> >> Any thoughts? The processor is an Athlon Phenom X4 955 and the Video >> card is an NVidia Geforce 250 with 1 gig of ram, running Win 7 64 bit. >> Not a hot rod system but it should be competent. >> >> Thanks - >> >> Mark > > > Where do you have Photoshop's scratch disk? > > If I understand correctly Photoshop's scratch disk is not the same as your > system swap file. I was told that it should not be on the same physical disk > as the OS and applications because it can materially slow the system if it > is. > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- Godfrey godfreydigiorgi.posterous.com -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
